Response of some pi-phase-shifted Bragg gratings to elevated pressure

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Bal, Harpreet Kaur, Dragomir, Nicoleta, Sidiroglou, Fotios, Wade, Scott A, Baxter, Gregory W and Collins, Stephen F (2011) Response of some pi-phase-shifted Bragg gratings to elevated pressure. In: 21st International Conference on Optical Fibre Sensors. Bock, Wojtek J, Albert, J and Bao, Xiaoyi, eds. Proceedings of SPIE, 7753 . SPIE, Bellingham, Wash..


The effect of pressures up to 200 kPa on pi-phase-shifted Bragg gratings was investigated in several types of fibers placed in a pressure chamber. Standard and alternative types of pi-phase shifted gratings were studied, and changes in reflection spectra caused by pressure changes were monitored. The alternative pi-phase shifted grating was fabricated using a phase mask with 536-nm pitch exhibiting features at twice the Bragg wavelength near 1552 nm due to the interleaved refractive index modulations along the fiber core with the periodicity of the phase mask. The three gratings studied exhibited quite different variation in Bragg wavelength with increased pressure for the different fiber types, and the alternative pi-phase-shifted grating in Corning HI 1060 FLEX fiber also suffered a significant change in the shape of the peaks.

Item type Book Section
ISBN 9780819482464
Subjects Historical > Faculty/School/Research Centre/Department > Centre for Telecommunications and Micro-Electronics (CTME)
Historical > FOR Classification > 0205 Optical Physics
Historical > SEO Classification > 970102 Expanding Knowledge in the Physical Sciences
Keywords ResPubID22742, fiber Bragg grating sensor, pi-phase-shifted grating, pressure, optical fibre, reflection, refractive index
Citations in Scopus 3 - View on Scopus
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