Linearly chirped and weakly tilted fiber Bragg grating edge filters for in-fiber sensor interrogation

Tuan Guo; Hwa-Yaw Tam; Jacques Albert

doi:10.1117/12.884956

18 May 2011 Linearly chirped and weakly tilted fiber Bragg grating edge filters for in-fiber sensor interrogation

Tuan Guo, Hwa-Yaw Tam, Jacques Albert

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77537V (2011) https://doi.org/10.1117/12.884956
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

Power-referenced in-fiber edge filters based on a linearly chirped and weakly tilted fiber Bragg gratings (TFBG) are proposed and experimentally demonstrated. A strongly chirped TFBG with a polymer coating provides a smooth transfer function with up to 0.7 dB/nm of discrimination over the C-band. The slope profile of UV-induced chirped TFBG can be easily tailored by adjusting the tilt angle using only one chirped phase mask. Interrogators based on chirped TFBG can provide temperature-self-compensated, broadband, robust and cost-effective in-fiber demodulation for FBG sensing applications.

Citation Download Citation

Tuan Guo, Hwa-Yaw Tam, and Jacques Albert "Linearly chirped and weakly tilted fiber Bragg grating edge filters for in-fiber sensor interrogation", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77537V (18 May 2011); https://doi.org/10.1117/12.884956

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