Pressure sensitivity of dual resonant long-period gratings written in boron co-doped optical fiber

Mateusz Smietana; Wojtek J. Bock; Predrag Mikulic; Jiahua Chen; Roland Wisniewski

doi:10.1117/12.885713

18 May 2011 Pressure sensitivity of dual resonant long-period gratings written in boron co-doped optical fiber

Mateusz Smietana, Wojtek J. Bock, Predrag Mikulic, Jiahua Chen, Roland Wisniewski

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77539E (2011) https://doi.org/10.1117/12.885713
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

The paper presents a pressure sensor based on a long-period grating (LPG) written in boron co-doped photosensitive fiber and operating at the phase-matching turning point. It is shown that the pressure sensitivity can be tuned by varying the UV exposure time during the LPG fabrication process. The achieved pressure sensitivity can reach over 1 nm•bar^-1, and is at least four times higher than for previously presented gratings working away from the double-resonance regime. In terms of intensity-based measurement, the sensitivity at the turning point can reach 0.212 dB•bar^-1.

Citation Download Citation

Mateusz Smietana, Wojtek J. Bock, Predrag Mikulic, Jiahua Chen, and Roland Wisniewski "Pressure sensitivity of dual resonant long-period gratings written in boron co-doped optical fiber", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77539E (18 May 2011); https://doi.org/10.1117/12.885713

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