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Proceedings Paper

Understanding fiber Bragg gratings at harmonics of the Bragg wavelength through spectra and images
Author(s): Stephen F. Collins; Scott A. Wade; Fotios Sidiroglou; Greg W. Baxter
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Paper Abstract

Fiber Bragg gratings written using a phase-mask exhibit a complex refractive index pattern in the fiber core, as observed in differential interference contrast (DIC) microscopy. This results in dual periodicities along the fiber core and gratings at both the Bragg wavelength, twice the Bragg wavelength, and the harmonics of these. Features in grating spectra arise from one or both of these periodicities and spectra for twice the Bragg wavelength (or its odd harmonics) are very sensitive to the details of how the UV complex diffraction field of the phase mask becomes imprinted as refractive index changes in the fiber core.

Paper Details

Date Published: 17 October 2012
PDF: 5 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84211Z (17 October 2012); doi: 10.1117/12.974804
Show Author Affiliations
Stephen F. Collins, Victoria Univ. (Australia)
Scott A. Wade, Swinburne Univ. of Technology (Australia)
Fotios Sidiroglou, Victoria Univ. (Australia)
Greg W. Baxter, Victoria Univ. (Australia)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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