Birefringent all-solid hybrid microstructured fiber.

We report the characterization of a birefringent all-solid hybrid microstructured fiber, in which the core-modes are guided by both the photonic bandgap (PBG) effect and total internal reflection (TIR). Due to the twofold symmetry, modal birefringence of 1.5 x 10(-4) and group birefringence of 2.1 x 10(-4) were measured at 1.31 microm, which is in the middle of the second bandgap. The band structure was calculated to be different from conventional 2-D PBG fibers due to the 1-D arrangement of high-index regions. The bend loss has a strong directional dependence due to the coexistence of the two guiding mechanisms. The fiber has two important properties pertinent to PBG fibers; spectral filtering, and chromatic dispersion specific to PBG fibers. The number of high-index regions, which trap pump power (by index guiding) when the fiber is used in cladding-pumped fiber lasers, is greatly reduced so that this fiber should enable efficient cladding pumping. This structure is suitable for linearly-polarized, cladding-pumped fiber lasers utilizing the properties of PBG fibers.

[1]  C. Cordeiro,et al.  Guidance properties of low-contrast photonic bandgap fibres. , 2005, Optics express.

[2]  Wei Jin,et al.  Photonic crystal fibers confining light by both index-guiding and bandgap-guiding: hybrid PCFs. , 2007, Optics express.

[3]  P. Roberts,et al.  Polarization maintaining hybrid TIR / bandgap all-solid photonic crystal fiber , 2008, 2008 Conference on Lasers and Electro-Optics and 2008 Conference on Quantum Electronics and Laser Science.

[4]  Ming-Jun Li,et al.  Highly birefringent hollow-core photonic bandgap fiber , 2005, OFC/NFOEC Technical Digest. Optical Fiber Communication Conference, 2005..

[5]  B. Eggleton,et al.  Antiresonant reflecting photonic crystal optical waveguides. , 2002, Optics letters.

[6]  W. Bock,et al.  Measurement of polarization mode dispersion and modal birefringence in highly birefringent fibers by means of electronically scanned shearing-type interferometry. , 1993, Applied optics.

[7]  J. Knight,et al.  Three-level Neodymium fiber laser incorporating photonic bandgap fiber , 2006, 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.

[8]  N.S. Platonov,et al.  250 W, single-mode, CW, linearly-polarized fibre source in Yb wavelength range , 2004, Conference on Lasers and Electro-Optics, 2004. (CLEO)..

[9]  Steven G. Johnson,et al.  Block-iterative frequency-domain methods for Maxwell's equations in a planewave basis. , 2001, Optics express.

[10]  Dominique Pagnoux,et al.  Singlemode propagation into depressed-core-index photonic-bandgap fibre designed for zero-dispersion propagation at short wavelengths , 2000 .

[11]  O. Okhotnikov,et al.  Femtosecond soliton mode-locked laser based on ytterbium-doped photonic bandgap fiber. , 2006 .

[12]  V. Khopin,et al.  Low-loss singlemode large mode area all-silica photonic bandgap fiber. , 2006, Optics express.

[13]  B. Eggleton,et al.  Resonance and scattering in microstructured optical fibers. , 2002, Optics letters.

[14]  P. Yeh,et al.  Theory of Bragg fiber , 1978 .

[15]  J. Knight,et al.  All-solid photonic bandgap fiber. , 2004, Optics letters.

[16]  Leon Poladian,et al.  Vector wave expansion method for leaky modes of microstructured optical fibers , 2003 .

[17]  A. Bjarklev,et al.  All-silica photonic bandgap fibre with zero dispersion and a large mode area at 730 nm , 2004 .

[18]  D. M. Atkin,et al.  Full 2-D photonic bandgaps in silica/air structures , 1995 .

[19]  Arismar Cerqueira S,et al.  Hybrid photonic crystal fiber. , 2006, Optics express.

[20]  H. T. Shang,et al.  Chromatic dispersion measurement by white light interferometry on meter-length single-mode optical fiber (A) , 1981 .

[21]  O. Okhotnikov,et al.  Femtosecond Soliton Mode-Locked Laser Based on Ytterbium-Doped Photonic Bandgap Fiber , 2006, LEOS 2006 - 19th Annual Meeting of the IEEE Lasers and Electro-Optics Society.

[22]  Ming-Jun Li,et al.  Highly birefringent hollow-core photonic bandgap fiber. , 2004 .

[23]  C. Cordeiro,et al.  Photonic bandgap with an index step of one percent. , 2005, Optics express.

[24]  Knight,et al.  Photonic band gap guidance in optical fibers , 1998, Science.

[25]  M. S. Alam,et al.  High group birefringence in air-core photonic bandgap fibers. , 2005, Optics letters.

[26]  K. Okamoto,et al.  Polarization-maintaining fibers and their applications , 1986 .

[27]  T A Birks,et al.  Bend loss in all-solid bandgap fibres. , 2006, Optics express.

[28]  M Douay,et al.  Fabrication and characterization of an all-solid 2D photonic bandgap fiber with a low-loss region (< 20 dB/km) around 1550 nm. , 2005, Optics express.

[29]  Yves Jaouën,et al.  Ytterbium-doped solid core photonic bandgap fiber for laser operation around 980nm , 2008 .

[30]  Jonathan Knight,et al.  Three-level neodymium fiber laser incorporating photonic bandgap fiber. , 2006 .

[31]  T. Hosaka,et al.  Single mode fibres with asymmetrical refractive index pits on both sides of core , 1981 .

[32]  Jesper Lægsgaard,et al.  Gap formation and guided modes in photonic bandgap fibres with high-index rods , 2004 .