Bragg gratings in optical fibers

Publisher Summary Optical fiber networks have been developed to the point where they are now synonymous with modern telecommunications and optical sensing. A major drawback to their evolution has been the reliance on bulk optics for conditioning and controlling the guided light beam, which requires the use of high-quality bulk-optic components and places stringent tolerance on optical alignment. This chapter discusses fiber Bragg gratings. Bragg gratings have truly revolutionized applications in communications networks. Devices that were thought to be impossible to construct are now becoming a reality. There are competitive technologies in each application, and the trade-offs and advantages need careful evaluation. Reflectivity, isolation, bandwidth, edge response, and dispersion characteristics can be adjusted to fabricate optimally designed gratings. This ability to make application-specific fiber Bragg gratings assures their enduring viability as components in advanced systems research and to enhance real systems in the generation, detection, and conditioning of light.

[1]  P Niay,et al.  Ultraviolet-induced permanent Bragg gratings in cerium-doped ZBLAN glasses or optical fibers. , 1994, Optics letters.

[2]  G. Ball,et al.  Single- and multipoint fiber-laser sensors , 1993, IEEE Photonics Technology Letters.

[3]  Bertrand Poumellec,et al.  The UV-induced refractive index grating in Ge: preforms: additional CW experiments and the macroscopic origin of the change in index , 1996 .

[4]  T. Erdogan.  Fiber grating spectra , 1997 .

[5]  Martin A. Putnam,et al.  Distributed strain sensing with fibre Bragg grating arrays embedded in CRTM composites , 1994 .

[6]  A. Othonos,et al.  Narrow linewidth excimer laser for inscribing Bragg gratings in optical fibers , 1995 .

[7]  B. Eggleton,et al.  Long periodic superstructure Bragg gratings in optical fibres , 1994 .

[8]  Peter E. Dyer,et al.  Analysis and application of a 01 order Talbot interferometer for 193 nm laser grating formation , 1996 .

[9]  J. T. Kringlebotn,et al.  Efficient diode-pumped single-frequency erbium:ytterbium fiber laser , 1993, IEEE Photonics Technology Letters.

[10]  K. Hill,et al.  Photosensitivity in optical fiber waveguides: Application to reflection filter fabrication , 1978 .

[11]  F Ouellette,et al.  All-fiber filter for efficient dispersion compensation. , 1991, Optics letters.

[12]  F Ouellette,et al.  Dynamic polarization coupling in elliptical-core photosensitive optical fiber. , 1992, Optics letters.

[13]  D. Mckenzie,et al.  Control of defects in optical fibers-a study using cathodoluminescence spectroscopy , 1993 .

[14]  Linn F. Mollenauer,et al.  Hybrid soliton pulse source with fibre external cavity and Bragg reflector , 1992 .

[15]  P. Lemaire,et al.  High pressure H/sub 2/ loading as a technique for achieving ultrahigh UV photosensitivity and thermal sensitivity in GeO/sub 2/ doped optical fibres , 1993 .

[16]  K. Hill,et al.  Fiber Bragg grating technology fundamentals and overview , 1997 .

[17]  Poladian.  Graphical and WKB analysis of nonuniform Bragg gratings. , 1993, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[18]  F. Ouellette.  Dispersion cancellation using linearly chirped Bragg grating filters in optical waveguides. , 1987, Optics letters.

[19]  Yoshinori Hibino,et al.  Formation mechanism of drawing‐induced E’ centers in silica optical fibers , 1985 .

[20]  Michael A. Davis,et al.  Fiber grating sensors , 1997 .

[21]  R. Kashyap,et al.  Mode-locked erbium fibre laser with wavelength selection by means of fibre Bragg grating reflector , 1991 .

[22]  W. A. Reed,et al.  Ultraviolet laser fabrication of ultrastrong optical fiber gratings and of germania‐doped channel waveguides , 1993 .

[23]  Victor Mizrahi,et al.  Mechanisms of enhanced UV photosensitivity via hydrogen loading in germanosilicate glasses , 1993 .

[24]  J S Sirkis,et al.  In-line fiber étalon for strain measurement. , 1993, Optics letters.

[25]  Laurence Reekie,et al.  High reflectivity ad narrow bandwidth fibre gratings written by single excimer pulse , 1993 .

[26]  I. Bennion,et al.  Dispersion-modified actively modelocked erbium fibre laser using a chirped fibre grating , 1994 .

[27]  D N Payne,et al.  Er(3+):Yb(3+)-codoped fiber distributed-feedback laser. , 1994, Optics letters.

[28]  A. Kersey,et al.  Multiplexed fiber Bragg grating strain-sensor system with a fiber Fabry - Perot wavelength filter. , 1993, Optics letters.

[29]  A. T. Alavie,et al.  A multiplexed Bragg grating fiber laser sensor system , 1993, IEEE Photonics Technology Letters.

[30]  John P. Dakin,et al.  Modeling and performance analysis of a fiber Bragg grating interrogation system using an acousto-optic tunable filter , 1996 .

[31]  Light induced transport and delocalization in transparent amorphous systems , 1989 .

[32]  William W. Morey,et al.  Multifunction, distributed optical fiber sensor for composite cure and response monitoring , 1990, Other Conferences.

[33]  P G Kazansky,et al.  Photoinduced second-harmonic generation in gamma-ray-irradiated optical fibers. , 1990, Optics letters.

[34]  Bertrand Poumellec,et al.  Experimental evidence of two types of photorefractive effects occuring during photoinscriptions of Bragg gratings within germanosilicate fibres , 1993 .

[35]  D. W. Crust,et al.  Active mode-locking of an external cavity GaInAsP laser incorporating a fibre-grating reflector , 1988 .

[36]  G. Meltz,et al.  Polarimetric heterodyning Bragg-grating fiber-laser sensor. , 1993, Optics letters.

[37]  M Parent,et al.  Proprietes de polarisation des reflecteurs de Bragg induits par photosensibilite dans les fibres optiques monomodes. , 1985, Applied optics.

[38]  Bertrand Poumellec,et al.  Behaviour of spectral transmissions of Bragg gratings written in germania-doped fibres: writing and erasing experiments using pulsed or cw uv exposure , 1994 .

[39]  Richard Ian Laming,et al.  Low coherence technique to characterise reflectivity and time delay as a function of wavelength within a long fibre grating , 1996 .

[40]  A. Kersey,et al.  Bragg grating-based laser sensors systems with interferometric interrogation and wavelength division multiplexing , 1995 .

[41]  Nori Shibata,et al.  Loss increase for optical fibers exposed to hydrogen atmosphere , 1985 .

[42]  J. Dawson,et al.  Multiple wavelength operation of an erbium-doped fiber laser , 1992, IEEE Photonics Technology Letters.

[43]  John P. Dakin,et al.  Simultaneous monitoring of multiple fibre gratings with a single acousto-optic tunable filter , 1996 .

[44]  Victor Mizrahi,et al.  Observations of changes in UV absorption bands of singlemode germanosilicate core optical fibres on writing and thermally erasing refractive index gratings , 1992 .

[45]  D N Payne,et al.  Photoinduced absorption change in germanosilicate preforms: evidence for the color-center model of photosensitivity. , 1995, Applied optics.

[46]  Roger Kelly,et al.  Laser irradiation effects in Si+-implanted SiO2 , 1992 .

[47]  Walter Margulis,et al.  10 cm Yb3+ DFB fibre laser with permanent phase shifted grating , 1995 .

[48]  E. Friebele,et al.  Thermal stability of photoinduced gratings and paramagnetic centers in Ge- and Ge/P-doped silica optical fibers. , 1993, Optics letters.

[49]  Raman Kashyap,et al.  Super-step-chirped fibre Bragg gratings , 1996 .

[50]  V. B. Neustruev,et al.  Colour centres in germanosilicate glass and optical fibres , 1994 .

[51]  R. Measures,et al.  Superimposed multiple Bragg gratings , 1994 .

[52]  Kenneth O. Hill,et al.  Efficient mode conversion in telecommunication fiber using externally written gratings , 1990, Optical Society of America Annual Meeting.

[53]  Vincent A. Handerek,et al.  Mechanical strength degradation of UV exposed optical fibres , 1997 .

[54]  A. Yariv.  Coupled-mode theory for guided-wave optics , 1973 .

[55]  Jichai Jeong,et al.  Highly stable optical add/drop multiplexer using polarization beam splitters and fiber Bragg gratings , 1997 .

[56]  David N. Payne,et al.  Single polarisation twisted distributed feedback fibre laser , 1996 .

[57]  W W Morey,et al.  Continuously tunable single-mode erbium fiber laser. , 1992, Optics letters.

[58]  L. Hamon,et al.  Experimental investigation of the gain flatness characteristics for 1.55 /spl mu/m erbium-doped fluoride fiber amplifiers , 1994, IEEE Photonics Technology Letters.

[59]  R. Measures,et al.  A passive wavelength demodulation system for guided-wave Bragg grating sensors , 1992, IEEE Photonics Technology Letters.

[60]  Andrew D. Ellis,et al.  10 cm chirped fibre Bragg grating for dispersion compensation at 10 Gbit/s over 400 km of non-dispersion shifted fibre , 1995 .

[61]  Don Monroe,et al.  DECAY OF ULTRAVIOLET-INDUCED FIBER BRAGG GRATINGS , 1994 .

[62]  A. Kersey,et al.  Fiber Bragg grating array sensor system using a bandpass wavelength division multiplexer and interferometric detection , 1996, IEEE Photonics Technology Letters.

[63]  Wei Jin,et al.  Geometric representation of errors in measurements of strain and temperature , 1997 .

[64]  V. Grubsky,et al.  Bragg grating fabrication in germanosilicate fibers by use of near-UV light: a new pathway for refractive-index changes. , 1997, Optics letters.

[65]  C. R. Giles,et al.  Modeling erbium-doped fiber amplifiers , 1991 .

[66]  D. Moss,et al.  Complex photosensitivity observed in germanosilica planar waveguides. , 1998, Optics letters.

[67]  David J. Webb,et al.  Wavelength-division and spatial multiplexing using tandem interferometers for Bragg grating sensor networks. , 1995, Optics letters.

[68]  Ralph P. Tatam,et al.  RAPID COMMUNICATION: Relating the state of cure to the real-time internal strain development in a curing composite using in-fibre Bragg gratings and dielectric sensors , 1998 .

[69]  Martin A. Putnam,et al.  Instrumentation for interrogating many-element fiber Bragg grating arrays , 1995, Smart Structures.

[70]  John Lehrer Zyskind,et al.  Transmission at 2.5 Gbit/s over 654 km using an erbium-doped fibre grating laser source , 1993 .

[71]  Turan Erdogan,et al.  Cladding-mode resonances in short- and long-period fiber grating filters , 2000 .

[72]  S Huang,et al.  Phase-based Bragg intragrating distributed strain sensor. , 1996, Applied optics.

[73]  John E. Sipe,et al.  Long-period fiber gratings as band-rejection filters , 1995 .

[74]  Clinton Randy Giles,et al.  Lightwave applications of fiber Bragg gratings , 1997 .

[75]  Duncan P. Hand,et al.  Rocking filter formation in photosensitive high birefringence optical fibres , 1990 .

[76]  Ian Bennion,et al.  Fabrication of chirped Bragg gratings in photosensitive fibre , 1993 .

[77]  E. Friebele,et al.  Index structure of fiber Bragg gratings in Ge-SiO(2) fibers. , 1997, Optics letters.

[78]  W. Michie,et al.  Simultaneous measurement of strain and temperature: error analysis , 1997 .

[79]  Alan D. Kersey,et al.  Bragg grating based nested fibre interferometers , 1996 .

[80]  Alan D. Kersey,et al.  Interrogation and multiplexing techniques for fiber Bragg grating strain sensors , 1993, Other Conferences.

[81]  Yunjiang Rao,et al.  Combined spatial- and time-division-multiplexing scheme for fiber grating sensors with drift-compensated phase-sensitive detection. , 1995, Optics letters.

[82]  M. Grimsditch,et al.  Polymorphism in amorphous SiO2 , 1984 .

[83]  D. Hand,et al.  Solitary thermal shock waves and optical damage in optical fibers: the fiber fuse. , 1988, Optics letters.

[84]  Alan D. Kersey,et al.  Multiplexed Bragg grating fibre-laser strain sensor system with mode-locked interrogation , 1993 .

[85]  Raymond M. Measures,et al.  Active wavelength demodulation of a Bragg grating fibre optic strain sensor using a quantum well electroabsorption filtering detector , 1996 .

[86]  K Takiguchi,et al.  Chirped in-fiber Bragg gratings for compensation of optical-fiber dispersion. , 1994, Optics letters.

[87]  P. Ferdinand,et al.  State-of-strain evaluation with fiber Bragg grating rosettes: application to discrimination between strain and temperature effects in fiber sensors. , 1997, Applied optics.

[88]  J. Robertson,et al.  Theory of defects in vitreous silicon dioxide , 1983 .

[89]  K. Hill,et al.  Elimination of photoinduced absorption in Ge-doped silica fibres by annealing of ultraviolet colour centres , 1992 .

[90]  T. E. Tsai,et al.  Defect centers and photoinduced self-organization in Ge-doped silica core fiber , 1991, Other Conferences.

[91]  K. Awazu,et al.  Simultaneous generation of optical absorption bands at 5.14 and 0.452 eV in 9 SiO2 :GeO2 glasses heated under an H2 atmosphere , 1990 .

[92]  Lawrence L. Buhl,et al.  Narrowband grating resonator filters in InGaAsP/InP waveguides , 1986 .

[93]  P. Krug,et al.  Dispersion compensation over 270 km at 10 Gbit/s using an offset-core chirped fibre Bragg grating , 1995 .

[94]  M. Gallagher,et al.  Spectroscopy of defects in germanium‐doped silica glass , 1993 .

[95]  Stephen F Collins,et al.  Intrinsic fibre Fabry-Perot sensors based on co-located Bragg gratings , 1997 .

[96]  S Barcelos,et al.  Complex grating structures with uniform phase masks based on the moving fiber-scanning beam technique. , 1995, Optics letters.

[97]  S. B. Lee,et al.  Interferometric temperature-insensitive strain measurement with different-diameter fiber Bragg gratings. , 1997, Optics letters.

[98]  A. A. Frolov,et al.  UV argon laser induced luminescence changes in germanosilicate fibre preforms , 1996 .

[99]  Victor Mizrahi,et al.  Constant fluorescence during phase grating formation and defect band bleaching in optical fibres under 5.1 eV laser exposure , 1992 .

[100]  M. Andrejco,et al.  Suppression of dynamic cross-saturation in multiwavelength lightwave networks with inhomogeneously broadened amplifiers , 1993, IEEE Photonics Technology Letters.

[101]  Julian D. C. Jones,et al.  Short optical path scan interferometric interrogation of a fibre Bragg grating embedded in a composite , 1997 .

[102]  Michalis N. Zervas,et al.  Single frequency erbium fiber external cavity semiconductor laser , 1995 .

[103]  G. Stegeman,et al.  Long-length, long-period rocking filters fabricated from conventional monomode telecommunications optical fiber. , 1992, Optics letters.

[104]  Griscom.  Self-trapped holes in amorphous silicon dioxide. , 1989, Physical review. B, Condensed matter.

[105]  W W Morey,et al.  Fiber-optic Bragg grating strain sensor with drift-compensated high-resolution interferometric wavelength-shift detection. , 1993, Optics letters.

[106]  M. A. Putnam,et al.  Fiber Bragg reflectors prepared by a single excimer pulse. , 1992, Optics letters.

[107]  Jacques Albert,et al.  Point-by-point fabrication of micro-Bragg gratings in photosensitive fibre using single excimer pulse refractive index modification techniques , 1993 .

[108]  Martin A. Putnam,et al.  Interrogation of 60 fibre Bragg grating sensors with microstrain resolution capability , 1996 .

[109]  Kenneth O. Hill,et al.  Low-loss highly overcoupled fused couplers: Fabrication and sensitivity to external pressure , 1988 .

[110]  D C Johnson,et al.  Photosensitivity in Ge-doped silica optical waveguides and fibers with 193-nm light from an ArF excimer laser. , 1994, Optics letters.

[111]  Simon Poole,et al.  Flash-condensation technique for the fabrication of high-phosphorus-content rare-earth-doped fibres , 1992 .

[112]  John Canning,et al.  Transient gratings in rare-earth-doped phosphosilicate optical fibres through periodic population inversion , 1995 .

[113]  K. Hill,et al.  An all-fiber dense wavelength-division multiplexer/demultiplexer using photoimprinted Bragg gratings , 1995, IEEE Photonics Technology Letters.

[114]  Hans G. Limberger,et al.  Compaction- and photoelastic-induced index changes in fiber Bragg gratings , 1996 .

[115]  Elsa Garmire,et al.  Comparison between the matrix method and the coupled-wave method in the analysis of Bragg reflector structures , 1992 .

[116]  G.M. Williams,et al.  Hybrid fiber Bragg grating/long period fiber grating sensor for strain/temperature discrimination , 1996, IEEE Photonics Technology Letters.

[117]  Robert H. Magruder,et al.  Preparation effects on the UV optical properties of GeO2 glasses , 1985 .

[118]  D C Johnson,et al.  Single-excimer-pulse writing of fiber gratings by use of a zero-order nulled phase mask: grating spectral response and visualization of index perturbations. , 1993, Optics letters.

[119]  R. Stolen,et al.  Self-organized phase-matched harmonic generation in optical fibers. , 1987, Optics letters.

[120]  Y. Silberberg,et al.  Inhomogeneously broadened fiber-amplifier cascades for transparent multiwavelength lightwave networks , 1995 .

[121]  E. Friebele,et al.  Uniform component of index structure induced in Ge-SiO2 fibers by spatially modulated ultraviolet light , 1998 .

[122]  Liang Dong,et al.  Bragg gratings in Ce 3+ -doped fibers written by a single excimer pulse , 1993 .

[123]  E. J. Friebele,et al.  The optical absorption and luminescence bands near 2 eV in irradiated and drawn synthetic silica , 1985 .

[124]  Y. Hibino,et al.  ESR Study on E'-Centers Induced by Optical Fiber Drawing Process , 1983 .

[125]  W. S. Veeman,et al.  Silicon coordination changes from 4-fold to 6-fold on devitrification of silicon phosphate glass , 1985, Nature.

[126]  Jacques Albert,et al.  Apodisation of the spectral response of fibre Bragg gratings using a phase mask with variable diffraction efficiency , 1995 .

[127]  L. Reekie,et al.  Novel interrogating system for fibre Bragg grating sensors using an acousto-optic tunable filter , 1993 .

[128]  Alan D. Kersey,et al.  Application of a fiber Fourier transform spectrometer to the detection of wavelength-encoded signals from Bragg grating sensors , 1995 .

[129]  David J. Webb,et al.  Simultaneous interrogation of interferometric and Bragg grating sensors , 1995 .

[130]  D. Hand,et al.  Photoinduced refractive-index changes in germanosilicate fibers. , 1990, Optics letters.

[131]  D C Johnson,et al.  Photosensitization of optical fiber and silica-on-silicon/silica waveguides. , 1993, Optics letters.

[132]  Ian Bennion,et al.  Phase-shifted Moire grating fibre resonators , 1990 .

[133]  Ultraviolet photolytic-induced changes in optical fibers: the thermal expansion coefficient. , 1993, Optics letters.

[134]  D. C. Shaver,et al.  Effects of excimer laser irradiation on the transmission, index of refraction, and density of ultraviolet grade fused silica , 1989 .

[135]  John E. Sipe,et al.  Optical properties of photosensitive fiber phase gratings , 1993 .

[136]  Irwin L. Newberg,et al.  The first demonstration of an optically steered microwave phased array antenna using true-time-delay , 1991 .

[137]  Ultraviolet-light photosensitivity in Er(3+)-Ge-doped optical fiber. , 1990, Optics letters.

[138]  K A Winick,et al.  Effective-index method and coupled-mode theory for almost-periodic waveguide gratings: a comparison. , 1992, Applied optics.

[139]  J. E. Townsend,et al.  Use of highly overcoupled couplers to detect shifts in Bragg wavelength , 1995 .

[140]  Victor Mizrahi,et al.  Characterization of UV-induced birefringence in photosensitive Ge-doped silica optical fibers , 1994 .

[141]  Charles R. Kurkjian,et al.  Single‐valued strength of ‘‘perfect’’ silica fibers , 1983 .

[142]  James R. Dunphy,et al.  Instrumentation development in support of fiber grating sensor arrays , 1993, Other Conferences.

[143]  E. J. Friebele,et al.  Defect centers in a germanium-doped silica-core optical fiber , 1974 .

[144]  I. Bennion,et al.  Multiwavelength generation in an erbium-doped fiber laser using in-fiber comb filters , 1996, IEEE Photonics Technology Letters.

[145]  Deepak Uttamchandani,et al.  Phase shifted Bragg gratings formed in optical fibres by post-fabrication thermal processing , 1996 .

[146]  R. R. Khrapko,et al.  Grating formation in a germanium free silicon oxynitride fibre , 1997 .

[147]  Ian Bennion,et al.  Single-mode behaviour of a multimode 1.55 μm laser with a fibre grating external cavity , 1986 .

[148]  Victor Mizrahi,et al.  248 nm induced vacuum UV spectral changes in optical fibre preform cores: support for a colour centre model of photosensitivity , 1993 .

[149]  Luis A. Aguirre.  Designing controllers by means of model reduction techniques , 1993 .

[150]  P. Duhamel,et al.  `Split radix' FFT algorithm , 1984 .

[151]  R. A. Weeks,et al.  Paramagnetic Resonance of Lattice Defects in Irradiated Quartz , 1956 .

[152]  Photoinscription of Bragg gratings within a germanosilicate fiber subjected to a high static electric field. , 1999, Optics letters.

[153]  E. J. Friebele,et al.  Drawing‐induced defect centers in a fused silica core fiber , 1976 .

[154]  Leon Poladian,et al.  PROPAGATION THROUGH NONUNIFORM GRATING STRUCTURES , 1994 .

[155]  Kenneth O. Hill,et al.  New design concept for a narrowband wavelength-selective optical tap and combiner , 1987 .

[156]  A. E. Yagle,et al.  An asymmetric discrete-time approach for the design and analysis of periodic waveguide gratings , 1995 .

[157]  L. Brilland,et al.  Optical add/drop multiplexer based on UV-written Bragg gratings in twincore fibre Mach-Zehnder interferometer , 1998 .

[158]  Simon Poole,et al.  Photolytic Index Changes in Optical Fibers , 1993 .

[159]  J. L. Cruz,et al.  Temperature-independent strain sensor using a chirped Bragg grating in a tapered optical fibre , 1995 .

[160]  T. Erdogan,et al.  Four channel fibre grating demultiplexer , 1994 .

[161]  W. A. Reed,et al.  Atomic force microscopy study of uv‐induced anisotropy in hydrogen‐loaded germanosilicate fibers , 1994 .

[162]  L. Reekie,et al.  Enhanced photosensitivity in tin-codoped germanosilicate optical fibers , 1995, IEEE Photonics Technology Letters.

[163]  David G. Bellemore,et al.  Distributed fiber Bragg grating strain sensing in reinforced concrete structural components , 1997 .

[164]  Julian Stone,et al.  Photorefractivity in GeO2‐doped silica fibers , 1987 .

[165]  John Lehrer Zyskind,et al.  Short single frequency erbium-doped fibre laser , 1992 .

[166]  D. Jackson,et al.  Simple multiplexing scheme for a fiber-optic grating sensor network. , 1993 .

[167]  W. A. Reed,et al.  Thermally enhanced ultraviolet photosensitivity in GeO2 and P2O5 doped optical fibers , 1995 .

[168]  Alan D. Kersey,et al.  All-fibre Bragg grating strain-sensor demodulation technique using a wavelength division coupler , 1994 .

[169]  Ian Bennion,et al.  Wide-stopband chirped fibre moire grating transmission filters , 1995 .

[170]  M. A. Putnam,et al.  Broadband square-pulse operation of a passively mode-locked fiber laser for fiber Bragg grating interrogation. , 1998, Optics letters.

[171]  Leon Poladian,et al.  Variational technique for nonuniform gratings and distributed-feedback lasers , 1994 .

[172]  P. St. J. Russell,et al.  Bloch Wave Analysis of Dispersion and Pulse Propagation in Pure Distributed Feedback Structures , 1991 .

[173]  I. Bennion,et al.  Fibre grating time delay element for phased array antennas , 1995 .

[174]  J. L. Dexter,et al.  Fiber-optic prism true time-delay antenna feed , 1993, IEEE Photonics Technology Letters.

[175]  Spectrally broadband Bragg grating mirror for an erbium-doped fiber laser , 1996 .

[176]  J. Judkins,et al.  Broad-band erbium-doped fiber amplifier flattened beyond 40 nm using long-period grating filter , 1997, IEEE Photonics Technology Letters.

[177]  Rolando Patricio Espindola,et al.  Photosensitivity and grating writing in hydrogen loaded germanosilicate core optical fibers at 325 and 351 nm , 1997 .

[178]  M. Yamada,et al.  Analysis of almost-periodic distributed feedback slab waveguides via a fundamental matrix approach. , 1987, Applied optics.

[179]  Paul J. Lemaire,et al.  Reliability of optical fibers exposed to hydrogen: prediction of long-term loss increases , 1991 .

[180]  E. Joseph Friebele,et al.  Fiber Bragg Grating STRAIN SENSORS: PRESENT AND FUTURE APPLICATIONS IN SMART STRUCTURES , 1998 .

[181]  A J Rogers,et al.  Simultaneous strain and temperature sensing with photogenerated in-fiber gratings. , 1995, Optics letters.

[182]  P. Russell,et al.  100% reflectivity Bragg reflectors produced in optical fibres by single excimer laser pulses , 1993 .

[183]  I Bennion,et al.  High-power soliton fiber laser based on pulse width control with chirped fiber Bragg gratings. , 1995, Optics letters.

[184]  F. Ouellette,et al.  Novel writing technique of long and highly reflective in-fibre gratings , 1994 .

[185]  W A Reed,et al.  Birefringence reduction in side-written photoinduced fiber devices by a dual-exposure method. , 1994, Optics letters.

[186]  Bertrand Poumellec,et al.  Densification involved in the UV-based photosensitivity of silica glasses and optical fibers , 1997 .

[187]  Nicholas Djeu,et al.  Xenon fluoride laser excitation by transverse electric discharge , 1976 .

[188]  Abe,et al.  Nature and origin of the 5-eV band in SiO2:GeO2 glasses. , 1992, Physical review. B, Condensed matter.

[189]  John P. Dakin,et al.  Electronic tracking system for multiplexed fibre grating sensors , 1995 .

[190]  Dana Z. Anderson.  Efficient Second-Harmonic Generation In Glass Fibers: The Possible Role Of Photo-Induced Charge Redistributiont , 1990, Optics & Photonics.

[191]  The significance of oxygen-deficient defects to the photosensitivity of hydrogen-loaded germano-silicate glass , 1999 .

[192]  W. Fowler,et al.  Electronic structure of E 1 ' centers in SiO 2 , 1975 .

[193]  R. Jopson,et al.  Polarisation-independent phase conjugation of lightwave signals , 1993 .

[194]  E. Friebele,et al.  Radiation‐induced defect centers in high‐purity GeO2 glass , 1987 .

[195]  Bertrand Poumellec,et al.  UV induced densification during Bragg grating inscription in Ge:SiO2 preforms , 1995 .

[196]  E. J. Friebele,et al.  Structural origin of the 5.16 eV optical absorption band in silica and Ge‐doped silica , 1994 .

[197]  A Yariv,et al.  Compensation for channel dispersion by nonlinear optical phase conjugation. , 1979, Optics letters.

[198]  G. A. Ball,et al.  Frequency noise of a Bragg grating fibre laser , 1994 .

[199]  Alan D. Kersey,et al.  Multi-element Bragg-grating based fibre-laser strain sensor , 1993 .

[200]  David L. Griscom,et al.  Defect structure of glasses: Some outstanding questions in regard to vitreous silica , 1985 .

[201]  R P Salathé,et al.  Tension increase correlated to refractive-index change in fibers containing UV-written Bragg gratings. , 1995, Optics letters.

[202]  P Blixt,et al.  Design of fiber gratings for total dispersion compensation. , 1994, Optics letters.

[203]  Martin A. Putnam,et al.  Fabrication of tapered, strain-gradient chirped fibre Bragg gratings , 1995 .

[204]  Victor Mizrahi,et al.  Ultraviolet laser fabrication of strong, nearly polarization‐independent Bragg reflectors in germanium‐doped silica waveguides on silica substrates , 1994 .

[205]  B. Kim,et al.  Interrogation of fiber grating sensor arrays with a wavelength-swept fiber laser. , 1998, Optics letters.

[206]  H. N. Rourke,et al.  Thermal decay of fiber Bragg gratings written in boron and germanium codoped silica fiber , 1997 .

[207]  Ian Bennion,et al.  Very broad reflection bandwidth (44 nm) chirped fibre gratings and narrow bandpass filters produced by the use of an amplitude mask , 1994 .

[208]  A. Vengsarkar,et al.  Optical fiber long-period grating sensors. , 1996, Optics letters.

[209]  Y. Takushima,et al.  Generation of over 140-nm-wide super-continuum from a normal dispersion fiber by using a mode-locked semiconductor laser source , 1998, IEEE Photonics Technology Letters.

[210]  David J. Webb,et al.  Spatially-multiplexed fibre-optic Bragg grating strain and temperature sensor system based on interferometric wavelength-shift detection , 1995 .

[211]  Chuan Yi Tang,et al.  A 2.|E|-Bit Distributed Algorithm for the Directed Euler Trail Problem , 1993, Inf. Process. Lett..

[212]  Compact all-fibre wavelength drop and insert filter , 1994 .

[213]  Bertrand Poumellec,et al.  UV induced densification during Bragg grating inscription in Ge:SiO2 preforms: interferometric microscopy investigations , 1995 .

[214]  R L Cone,et al.  Ultraviolet-induced distributed-feedback gratings in Ce(3+) -doped silica optical fibers. , 1991, Optics letters.

[215]  A. Tünnermann,et al.  High-power cw neodymium-doped fiber laser operating at 9.2 W with high beam quality. , 1995, Optics letters.

[216]  David N. Payne,et al.  Photosensitivity in Ce 3+ -doped optical fibers , 1993 .

[217]  David J. Webb,et al.  Ultrasonic Field and Temperature Sensor Based on Short In-Fibre Bragg Gratings , 1998 .

[218]  Pascal Bernage,et al.  TEM CHARACTERIZATION OF STRUCTURAL CHANGES IN GLASS ASSOCIATED TO BRAGG GRATING INSCRIPTION IN A GERMANOSILICATE OPTICAL FIBRE PREFORM , 1994 .

[219]  Raman Kashyap,et al.  Novel method of producing all fibre photoinduced chirped gratings , 1994 .

[220]  J. Capmany,et al.  A novel highly selective and tunable optical bandpass filter using a fiber grating and a fiber fabry‐perot , 1994 .

[221]  H. Patrick,et al.  Growth of Bragg gratings produced by continuous-wave ultraviolet light in optical fiber. , 1993, Optics letters.

[222]  Philip S. Russell,et al.  Frequency doubling, absorption, and grating formation in glass fibers: effective defects or defective effects? , 1991, Other Conferences.

[223]  G. Meltz,et al.  Formation of Bragg gratings in optical fibers by a transverse holographic method. , 1989, Optics letters.

[224]  J. Canning,et al.  Transient and permanent gratings in phosphosilicate optical fibers produced by the flash condensation technique. , 1995, Optics letters.

[225]  Raoul Stubbe,et al.  A writing technique for long fiber Bragg gratings with complex reflectivity profiles , 1997 .

[226]  L. Reekie,et al.  Novel add/drop filters for wavelength-division-multiplexing optical fiber systems using a Bragg grating assisted mismatched coupler , 1996, IEEE Photonics Technology Letters.

[227]  Steven T. Davey,et al.  All-fibre narrowband reflection gratings at 1500 nm , 1990 .

[228]  F. P. Payne,et al.  Photorefractive gratings in single-mode optical fibres , 1989 .

[229]  Masayuki Yamane,et al.  Photoluminescence in VAD SiO2:GeO2 Glasses Sintered under Reducing or Oxidizing Conditions , 1989 .

[230]  L. Reinhart,et al.  Tuning Bragg wavelength by writing gratings on prestrained fibers , 1994, IEEE Photonics Technology Letters.

[231]  Pascal Bernage,et al.  Efficiency and thermal behaviour of cerium-doped fluorozirconate glass fibre Bragg gratings , 1994 .

[232]  Rene-Paul Salathe,et al.  Optical low-coherence reflectometry (OLCR) characterization of efficient Bragg gratings in optical fiber , 1993, Other Conferences.

[233]  Alwyn J. Seeds,et al.  Optically generated true-time delay in phased-array antennas , 1995 .

[234]  A. Kersey,et al.  Fiber-optic Bragg-grating differential-temperature sensor , 1992, IEEE Photonics Technology Letters.

[235]  A. Kersey,et al.  Matched-filter interrogation technique for fibre Bragg grating arrays , 1995 .

[236]  Ian Bennion,et al.  Multiplexing Bragg gratings using combined wavelength and spatial division techniques with digital resolution enhancement , 1997 .

[237]  David J. Webb,et al.  Simultaneous measurement of strain and temperature using the first- and second-order diffraction wavelengths of Bragg gratings , 1997 .

[238]  E J Friebele,et al.  Grating sensor array demodulation by use of a passively mode-locked fiber laser. , 1997, Optics letters.

[239]  Kawamura,et al.  Photochemical reactions in GeO2-SiO2 glasses induced by ultraviolet irradiation: Comparison between Hg lamp and excimer laser. , 1995, Physical review. B, Condensed matter.

[240]  Martin A. Putnam,et al.  Fibre strength unaffected by on-line writing of single-pulse Bragg gratings , 1997 .

[241]  I. Riant,et al.  Study of the photosensitivity at 193 nm and comparison with photosensitivity at 240 nm influence of fiber tension: type IIa aging , 1997 .

[242]  S. Rishton,et al.  Magnification of mask fabricated fibre Bragg gratings , 1993 .

[243]  W. Loh,et al.  Single-sided output Sn/Er/Yb distributed feedback fiber laser , 1996 .

[244]  B. Ventrudo,et al.  Wavelength and intensity stabilisation of 980 nm diode lasers coupled to fibre Bragg gratings , 1994 .

[245]  G. A. Ball,et al.  Design of a single-mode linear-cavity erbium fiber laser utilizing Bragg reflectors , 1992 .

[246]  P. J. Lemaire,et al.  Thermal stability analysis of UV-induced fiber Bragg gratings , 1997 .

[247]  G. Johnson,et al.  Flexural beam-based fiber Bragg grating accelerometers , 1998, IEEE Photonics Technology Letters.

[248]  H. Limberger,et al.  UV-irradiation-induced structural transformation of germanoscilicate glass fiber. , 1997, Optics letters.

[249]  Ralph P. Tatam,et al.  Fibre Bragg gratings fabricated using a wavelength tuneable laser source and a phase mask based interferometer , 1996 .

[250]  H. F. Liu,et al.  Experimental demonstration of compression of dispersed optical pulses by reflection from self-chirped optical fiber Bragg gratings. , 1994, Optics letters.

[251]  E. Friebele,et al.  On the Structure of Ge-Associated Defect Centers in Irradiated High Purity GeO2 and Ge-Doped SiO2 Glasses , 1987 .

[252]  Dana Z. Anderson,et al.  Production of in-fibre gratings using a diffractive optical element , 1993 .

[253]  U Osterberg,et al.  Dye laser pumped by Nd:YAG laser pulses frequency doubled in a glass optical fiber. , 1986, Optics letters.

[254]  David N. Payne,et al.  Single pulse Bragg gratings written during fibre drawing , 1993 .

[255]  Glen M. Williams,et al.  Photosensitivity of rare-earth-doped ZBLAN fluoride glasses , 1997 .

[256]  Raman Kashyap,et al.  Photoconduction in germanium and phosphorus doped silica waveguides , 1993 .

[257]  L Reekie,et al.  Negative-index gratings formed by a 193-nm excimer laser. , 1996, Optics letters.

[258]  S. V. Chernikov,et al.  30 ps chromatic dispersion compensation of 400 fs pulses at 100 Gbits/s in optical fibres using an all fibre photoinduced chirped reflection grating , 1994 .

[259]  Ralph P. Tatam,et al.  Simultaneous independent temperature and strain measurement using in-fibre Bragg grating sensors , 1996 .

[260]  H. Fevrier,et al.  Analysis of frequency-doubling processes in optical fibers using Raman spectroscopy. , 1987, Optics letters.

[261]  S Barcelos,et al.  Grating-frustrated coupler: a novel channel-dropping filter in single-mode optical fiber. , 1994, Optics letters.

[262]  D. K. Lam,et al.  Characterization of single-mode optical fiber filters. , 1981, Applied optics.

[263]  S. Radic,et al.  Phase-shifted fiber Bragg gratings and their application for wavelength demultiplexing , 1994, IEEE Photonics Technology Letters.

[264]  Ian Bennion,et al.  Identical broadband chirped grating interrogation technique for temperature and strain sensing , 1997 .

[265]  Kenneth O. Hill,et al.  Birefringent photosensitivity in monomode optical fibre : application to external writing of rocking filters , 1991 .

[266]  R. Devine,et al.  High resolution ultraviolet photoablation of SiOx films , 1985 .

[267]  E. J. Friebele,et al.  Optical fiber waveguides in radiation environments, II , 1984 .

[268]  Y. Mitsunaga,et al.  Reliability assurance for long-length optical fibre based on proof testing , 1981 .

[269]  William W. Morey,et al.  Nd3+ fibre laser utilising intra-core Bragg reflectors , 1990 .

[270]  R. Laming,et al.  Intracavity pumping for increased output power from a distributed feedback erbium fibre laser , 1996 .

[271]  G. Ball,et al.  Standing-wave monomode erbium fiber laser , 1991, IEEE Photonics Technology Letters.

[272]  Steven T. Davey,et al.  Direct observation of UV induced bleaching of 240 nm absorption band in photosensitive germanosilicate glass fibres , 1992 .

[273]  E. Brinkmeyer,et al.  Fibre Bragg reflector for mode selection and line-narrowing of injection lasers , 1986 .

[274]  S. Qiao,et al.  A new compact electron spin polarimeter with a high efficiency , 1997 .

[275]  H. Kogelnik,et al.  Coupled‐Wave Theory of Distributed Feedback Lasers , 1972 .

[276]  Raymond M. Measures,et al.  Fiber Bragg grating laser sensor , 1993 .

[277]  P. Kaiser,et al.  Drawing-induced coloration in vitreous silica fibers , 1974 .

[278]  H. Kogelnik,et al.  Filter response of nonuniform almost-periodic structures , 1976, The Bell System Technical Journal.

[279]  M. A. Putnam,et al.  Stepped-wavelength optical-fiber Bragg grating arrays fabricated in line on a draw tower. , 1994, Optics letters.

[280]  A A Frolov,et al.  Refractive-index gratings written by near-ultraviolet radiation. , 1997, Optics letters.

[281]  A. Othonos,et al.  Novel and improved methods of writing Bragg gratings with phase masks , 1995, IEEE Photonics Technology Letters.

[282]  D N Payne,et al.  Strong photosensitive gratings in tin-doped phosphosilicate optical fibers. , 1995, Optics letters.

[283]  William W. Morey,et al.  Multiplexing fiber Bragg grating sensors , 1991, Other Conferences.

[284]  David J. Webb,et al.  Extended-range, low coherence dual wavelength interferometry using a superfluorescent fibre source and chirped fibre Bragg gratings , 1997 .

[285]  Peter E. Dyer,et al.  Analysis of grating formation with excimer laser irradiated phase masks , 1995 .

[286]  S. K. Chaudhuri,et al.  Full-vectorial mode calculations by finite difference method , 1994 .

[287]  A. Chraplyvy,et al.  Regimes of feedback effects in 1.5-µm distributed feedback lasers , 1986 .

[288]  Raymond M. Measures,et al.  Novel Bragg grating distributed-strain sensor based on phase measurements , 1995, Smart Structures.

[289]  Gerald Meltz,et al.  Fiber Optic Bragg Grating Sensors , 1990, Other Conferences.

[290]  Jacques Albert,et al.  Photosensitivity in phosphorus‐doped silica glass and optical waveguides , 1994 .

[291]  Graeme Maxwell,et al.  UV written 13 dB reflection filters in hydrogenated low loss planar silica waveguides , 1993 .

[292]  P S Russell,et al.  Grating-fiber coupler as a high-resolution spectrometer. , 1985, Optics letters.

[293]  J. Jones,et al.  Pseudoheterodyne detection scheme for optical interferometers , 1982 .

[294]  A. E. Attard.  Fermi level shift in Bi12SiO20 via photon‐induced trap level occupation , 1992 .

[295]  Gerald Meltz,et al.  Bragg grating formation and germanosilicate fiber photosensitivity , 1991, Other Conferences.

[296]  J. Robertson.  Defect mechanisms in a-SiO2 , 1985 .

[297]  P. Russell,et al.  Nonlinear transmission and color-center dynamics in germanosilicate fibers at 420-540 nm. , 1988, Optics letters.

[298]  G. Ball,et al.  Programmable fiber optic delay line , 1994, IEEE Photonics Technology Letters.

[299]  M. Nishimura,et al.  Temperature compensation technique for fibre Bragg gratings using liquid crystalline polymer tubes , 1997 .

[300]  Peter E. Dyer,et al.  High reflectivity fibre gratings produced by incubated damage using a 193 nm ArF laser , 1994 .

[301]  A. Kersey,et al.  A four-element fiber grating sensor array with phase-sensitive detection , 1994, IEEE Photonics Technology Letters.

[302]  Hosono,et al.  Defect formation in SiO2:GeO2 glasses studied by irradiation with excimer laser light. , 1996, Physical review. B, Condensed matter.

[303]  I. Bennion,et al.  Wide-band Fabry-Perot-like filters in optical fiber , 1995, IEEE Photonics Technology Letters.

[304]  D. A. Pinnow,et al.  Optical aging characteristics of borosilicate clad fused silica core fiber optical waveguides , 1975 .

[305]  T. Erdogan,et al.  Simultaneous wavelength-stabilization of 980-nm pump lasers , 1994, IEEE Photonics Technology Letters.

[306]  G. Hull-Allen,et al.  60 mW 1.5 /spl mu/m single-frequency low-noise fiber laser MOPA , 1994, IEEE Photonics Technology Letters.

[307]  Yunjiang Rao,et al.  Simultaneous spatial, time and wavelength division multiplexed in-fibre grating sensing network , 1996 .

[308]  U Osterberg,et al.  Experimental studies on efficient frequency doubling in glass optical fibers. , 1987, Optics letters.

[309]  Raman Kashyap,et al.  Wavelength flattened saturated erbium amplifier using multiple side-tap Bragg gratings , 1993 .

[310]  Raman Kashyap,et al.  Simple technique for apodising chirped and unchirped fibre Bragg gratings , 1996 .

[311]  Hong Po,et al.  High power neodymium-doped single transverse mode fibre laser , 1993 .

[312]  John P. Dakin,et al.  Discrimination between strain and temperature effects using dual-wavelength fibre grating sensors , 1994 .

[313]  Jichai Jeong,et al.  Channel-switching active add/drop multiplexer with tunable gratings , 1998 .

[314]  John Canning,et al.  pi -phase-shifted periodic distributed structures in optical fibres by UV post-processing , 1994 .

[315]  Jacques Albert,et al.  Comparison of one‐photon and two‐photon effects in the photosensitivity of germanium‐doped silica optical fibers exposed to intense ArF excimer laser pulses , 1995 .

[316]  Devine,et al.  Evidence for a wide continuum of polymorphs in a-SiO2. , 1986, Physical review. B, Condensed matter.

[317]  Hartmut Hillmer,et al.  Novel tunable semiconductor lasers using continuously chirped distributed feedback gratings with ultrahigh spatial precision , 1994 .

[318]  Lin Zhang,et al.  In-fiber Bragg-grating temperature sensor system for medical applications , 1997 .

[319]  David J. Webb,et al.  Demultiplexing of fibre Bragg grating temperature and strain sensors , 1994 .

[320]  Dennis G. Hall,et al.  Analysis of waveguide gratings: application of Rouard's method , 1985 .

[321]  Fabrication of rocking filters at 193 nm. , 1996, Optics letters.

[322]  G. A. Ball,et al.  Low noise single frequency linear fibre laser , 1993 .

[323]  D. L. Williams,et al.  Wavelength stable uncooled fibre grating semiconductor laser for use in an all optical WDM access network , 1996 .

[324]  Yong-Kwan Park,et al.  Stable single-mode erbium fiber-grating laser for digital communication , 1993 .

[325]  F. Bilodeau,et al.  High-return-loss narrowband all-fiber bandpass Bragg transmission filter , 1994, IEEE Photonics Technology Letters.

[326]  Hideo Hosono,et al.  Two‐photon processes in defect formation by excimer lasers in synthetic silica glass , 1988 .

[327]  I Bennion,et al.  Postfabrication exposure of gap-type bandpass filters in broadly chirped fiber gratings. , 1995, Optics letters.

[328]  Robert D. Maurer,et al.  Tensile strength and fatigue of optical fibers , 1976 .

[329]  N. S. Bergano,et al.  Long-period fiber-grating-based gain equalizers. , 1996, Optics letters.

[330]  R. A. B. Devine,et al.  Ultraviolet Irradiation Induced Compaction and Photoetching in Amorphous, Thermal SiO2 , 1985 .

[331]  A. Kersey,et al.  High-resolution fibre-grating based strain sensor with interferometric wavelength-shift detection , 1992 .

[332]  G I Stegeman,et al.  Correlation of defect centers with a wavelength-dependent photosensitive response in germania-doped silica optical fibers. , 1991, Optics letters.

[333]  John E. Sipe,et al.  Tilted fiber phase gratings , 1996 .

[334]  G. Ball,et al.  Fiber laser source/analyzer for Bragg grating sensor array interrogation , 1994 .

[335]  F. Bakhti,et al.  Wide bandwidth, low loss and highly rejective doubly phase-shifted UV-written fibre bandpass filter , 1996 .

[336]  A. D. Kersey,et al.  Simultaneous measurement of temperature and strain using fibre Bragg gratings and Brillouin scattering , 1997 .

[337]  David A. Jackson,et al.  Interrogation of a conventional current transformer by a fiber-optic interferometer. , 1991, Optics letters.

[338]  François Ouellette,et al.  Permanent photoinduced birefringence in a Ge‐doped fiber , 1991 .

[339]  I. V. Nikolin,et al.  HIGHLY PHOTOSENSITIVE NITROGEN-DOPED GERMANOSILICATE FIBRE FOR INDEX GRATING WRITING , 1997 .

[340]  Raman Kashyap,et al.  Wideband gain flattened erbium fibre amplifier using a photosensitive fibre blazed grating , 1993 .

[341]  R. Kashyap,et al.  Enhanced UV photosensitivity in boron codoped germanosilicate fibres , 1993 .

[342]  G. A. Ball,et al.  Compression-tuned single-frequency Bragg grating fiber laser. , 1994 .

[343]  John E. Sipe,et al.  Stable single mode hybrid laser with high power and narrow linewidth , 1994 .

[344]  K. Hill,et al.  Narrow-band Bragg reflectors in optical fibers. , 1978, Optics letters.

[345]  Lin Zhang,et al.  Uv-written in-fibre Bragg gratings , 1996 .

[346]  Alan D. Kersey,et al.  Analysis Of Intrinsic Crosstalk In Tapped-Serial And Fabry-Perot Interferometric Fiber Sensor Arrays , 1989, Other Conferences.

[347]  Liang Dong,et al.  Evidence by transmission electron microscopy of densification associated to Bragg grating photoimprinting in germanosilicate optical fibers , 1997 .

[348]  T. Coroy,et al.  A Bragg grating-tuned fiber laser strain sensor system , 1993, IEEE Photonics Technology Letters.

[349]  Nabil M. Lawandy,et al.  Dynamics of the formation of Bragg gratings in germanosilicate optical fibers , 1990 .

[350]  D R Hjelme,et al.  Application of Bragg grating sensors in the characterization of scaled marine vehicle models. , 1997, Applied optics.

[351]  Hans G. Limberger,et al.  Spectral characterisation of photoinduced high efficient Bragg gratings in standard telecommunication fibres , 1993 .

[352]  Raymond M. Measures,et al.  Fiber optic intra-grating distributed strain sensor , 1994, Optics & Photonics.

[353]  Ian Bennion,et al.  Fibre dispersion compensation using a chirped in-fibre Bragg grating , 1994 .

[354]  S Thibault,et al.  Dynamic and orientational behavior of UV-induced luminescence bleaching in Ge-doped silica optical fiber. , 1993, Optics letters.

[355]  Time-and-spatial-multiplexing tree topology for fiber-optic Bragg-grating sensors with interferometric wavelength-shift detection. , 1996, Applied optics.

[356]  R. I. Laming,et al.  1.55 /spl mu/m phase-shifted distributed feedback fibre laser , 1995 .

[357]  Philip S. Russell,et al.  Optically induced creation, transformation, and organization of defects and color centers in optical fibers , 1991, Other Conferences.

[358]  S.T. Vohra,et al.  Fiber-chirped grating Fabry-Perot sensor with multiple-wavelength-addressable free-spectral ranges , 1998, IEEE Photonics Technology Letters.

[359]  W. F. Liu,et al.  Thermal decay of fiber Bragg gratings of positive and negative index changes formed at 193 nm in a boron-codoped germanosilicate fiber. , 1997, Applied optics.

[360]  A. Ikushima,et al.  Defect formation in GeO2–SiO2 glass by poling with ArF laser excitation , 1997 .

[361]  T. Tanbun-Ek,et al.  Mode-locked hybrid soliton pulse source with extremely wide operating frequency range , 1993, IEEE Photonics Technology Letters.

[362]  J. Marti,et al.  Optical equalisation of dispersion-induced distortion in subcarrier systems using tapered linearly chirped gratings , 1996 .

[363]  Jörg Hübner,et al.  Distributed feedback Er3+-doped fibre laser , 1995 .

[364]  Marc Douay,et al.  Formation of moire grating in core of germanosilicate fibre by transverse holographic double exposure method , 1991 .

[365]  M J Yuen,et al.  Ultraviolet absorption studies of germanium silicate glasses. , 1982, Applied optics.

[366]  A. Yariv,et al.  All-fiber zero-insertion-loss add-drop filter for wavelength-division multiplexing. , 1998, Optics letters.

[367]  M Leblanc,et al.  Distributed strain measurement based on a fiber Bragg grating and its reflection spectrum analysis. , 1996, Optics letters.

[368]  J. Bokor,et al.  Bragg gratings fabricated in monomode photosensitive optical fiber by UV exposure through a phase mask , 1993 .

[369]  O. Leminger,et al.  Phase-shifted Bragg-grating filters with improved transmission characteristics , 1995 .

[370]  K. Iwatsuki,et al.  Simultaneous oscillation of wavelength-tunable, singlemode lasers using an Er-doped fibre amplifier , 1992 .

[371]  S. J. Mihailov,et al.  Recording of efficient high-order Bragg reflectors in optical fibres by mask image projection and single pulse exposure with an excimer laser , 1994 .

[372]  W. Clarkson,et al.  Efficient distributed feedback erbium-doped germanosilicate fibre laser pumped in 520 nm band , 1996 .

[373]  V A Sidorov,et al.  Optical absorption and luminescence of germanium oxygen-deficient centers in densified germanosilicate glass. , 1997, Optics letters.

[374]  Raymond M. Measures,et al.  Arbitrary strain profile measurement within fibre gratings using interferometric Fourier transform technique , 1997 .

[375]  Jacques Albert,et al.  Apodised in-fibre Bragg grating reflectors photoimprinted using a phase mask , 1995 .

[376]  Herbert G. Winful,et al.  Pulse compression in optical fiber filters , 1985 .

[377]  Raman Kashyap,et al.  Narrow line semiconductor laser using fibre grating , 1991 .

[378]  Ian Bennion,et al.  Chirped gratings produced in photosensitive optical fibres by fibre deformation during exposure , 1994 .

[379]  Heather Patrick,et al.  Annealing of Bragg gratings in hydrogen‐loaded optical fiber , 1995 .

[380]  S Huang,et al.  Bragg intragrating structural sensing. , 1995, Applied optics.

[381]  David N. Payne,et al.  Tunable single-mode fiber lasers , 1986 .

[382]  F Ouellette,et al.  Passive temperature-compensating package for optical fiber gratings. , 1995, Applied optics.

[383]  Raman Kashyap,et al.  UV written reflection grating structures in photosensitive optical fibres using phase-shifted phase masks , 1994 .

[384]  Raman Kashyap,et al.  Wavelength-uncommitted lasers , 1994 .

[385]  M. Cole,et al.  Measurement of arbitrary strain profiles within fibre gratings , 1996 .

[386]  R P Salathé,et al.  Fabrication of high-mechanical-resistance Bragg gratings in single-mode optical fibers with continuous-wave ultraviolet laser side exposure. , 1998, Optics letters.

[387]  Kenneth O. Hill,et al.  Efficient, narrowband LP/sub 01/ implies/implied by LP/sub 02/ mode convertors fabricated in photosensitive fibre: spectral response , 1991 .

[388]  P.K. Cheo,et al.  Modeling of short, single-frequency, fiber lasers in high-gain fiber , 1993, IEEE Photonics Technology Letters.

[389]  Stephen W. James,et al.  Transient strain monitoring on a gun barrel using optical fiber Bragg grating sensors , 1998, Optics & Photonics.

[390]  J. Sirkis,et al.  Effects of diametric load on fibre Bragg gratings fabricated in low birefringent fibre , 1996 .