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Proceedings Article

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

[+] Author Affiliations
Harpreet K. Bal, Nicoleta M. Dragomir, Fotios Sidiroglou, Greg W. Baxter, Stephen F. Collins

Victoria Univ. (Australia)

Scott A. Wade

Swinburne Univ. of Technology (Australia)

Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775389 (May 17, 2011); doi:10.1117/12.886440
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From Conference Volume 7753

  • 21st International Conference on Optical Fiber Sensors
  • Ottawa, Canada | May 15, 2011

abstract

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.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Harpreet K. Bal ; Nicoleta M. Dragomir ; Fotios Sidiroglou ; Scott A. Wade ; Greg W. Baxter, et al.
"Response of some pi-phase-shifted Bragg gratings to elevated pressure", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775389 (May 17, 2011); doi:10.1117/12.886440; http://dx.doi.org/10.1117/12.886440


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