Effect of phase mask alignment on fiber Bragg grating spectra at harmonics of the Bragg wavelength.

Effects of fabrication conditions on the double-peak structure observed in fiber Bragg gratings at harmonics of the Bragg wavelength were investigated, showing that slight variations in the alignment of the phase mask can affect the grating spectra significantly. A single peak occurs only when the incident beam direction is perfectly normal with respect to the fiber.

[1]  Stephen F Collins,et al.  Quantitative investigation of the refractive-index modulation within the core of a fiber Bragg grating. , 2006, Optics express.

[2]  Marc Douay,et al.  Free spectral range variations of grating-based Fabry–Perot filters photowritten in optical fibers , 1995 .

[3]  Stephen F Collins,et al.  Three parameter sensing with a single Bragg grating in non-birefringent fiber , 2005 .

[4]  Fotios Sidiroglou,et al.  Response of some pi-phase-shifted Bragg gratings to elevated pressure , 2011, International Conference on Optical Fibre Sensors.

[5]  Z. Brodzeli,et al.  Occurrence of features of fiber Bragg grating spectra having a wavelength corresponding to the phase mask periodicity , 2008, 2008 1st Asia-Pacific Optical Fiber Sensors Conference.

[6]  Fotios Sidiroglou,et al.  Fibre Bragg grating transverse strain sensing using reflections at twice the Bragg wavelength , 2010 .

[7]  J. Canning.  Fibre gratings and devices for sensors and lasers , 2008 .

[8]  Fotios Sidiroglou,et al.  Fiber Bragg gratings at twice the Bragg wavelength: properties and sensor applications , 2010 .

[9]  W. Brocklesby,et al.  Imaging of free-space interference patterns used to manufacture fiber bragg gratings. , 2000, Applied optics.

[10]  Comparison of spectra and images of Bragg gratings written in three different optical fibres , 2011, 2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim incorporating the Australasian Conference on Optics, Lasers and Spectroscopy and the Australian Conference on Optical Fibre Technology.

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

[12]  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.

[13]  A. Othonos.  Fiber Bragg gratings , 1999 .

[14]  S. Wade,et al.  Variations of the growth of harmonic reflections in fiber Bragg gratings fabricated using phase masks. , 2012, Journal of the Optical Society of America. A, Optics, image science, and vision.

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

[16]  Stephen F Collins,et al.  Reflections near 1030 nm from 1540 nm fibre Bragg gratings: Evidence of a complex refractive index structure , 2005 .

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

[18]  S. A. Wade,et al.  Modelling of an alternative pi-phase-shifted fibre Bragg grating operating at twice the Bragg wavelength , 2010, 35th Australian Conference on Optical Fibre Technology.

[19]  Stephen F Collins,et al.  Nondestructive imaging of a type I optical fiber Bragg grating. , 2003, Optics letters.

[20]  Stephen F Collins,et al.  Fabrication of a pi-phase-shifted fiber Bragg grating at twice the Bragg wavelength with the standard phase mask technique. , 2009, Optics letters.

[21]  Snjezana Tomljenovic-Hanic,et al.  Symmetry-selective reflection gratings. , 2005, Journal of the Optical Society of America. A, Optics, image science, and vision.

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

[23]  Ping Lu,et al.  Multiple-beam interference patterns in optical fiber generated with ultrafast pulses and a phase mask. , 2004, Optics letters.

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

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

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

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

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