An interrogation system based on two semiconductor optical amplifiers for weak fiber Bragg gratings

Zhihui Luo; Hongqiao Wen; Huiyong Guo

doi:10.1117/12.2031185

15 October 2013 An interrogation system based on two semiconductor optical amplifiers for weak fiber Bragg gratings

Zhihui Luo, Hongqiao Wen, Huiyong Guo

Proceedings Volume 8924, Fourth Asia Pacific Optical Sensors Conference; 892434 (2013) https://doi.org/10.1117/12.2031185
Event: Asia Pacific Optical Sensors Conference 2013, 2013, Wuhan, China

Abstract

An interrogation system based on two semiconductor optical amplifiers for weak fiber Bragg gratings(FBGs) was proposed in this study. The first Semiconductor Optical Amplifier (SOA) was used to modulate the light and the second SOA separated the signal through delayed switching. The proposed system has lower insertion loss and higher spatial resolution, and can interrogate time-division and wavelength-division multiplexed FBG array. Up to 50 FBGs, with a reflectivity of 0.2% and a spatial resolution of 5m along the optical fiber, were distinguished to demonstrate the interrogation system.

Citation Download Citation

Zhihui Luo, Hongqiao Wen, and Huiyong Guo "An interrogation system based on two semiconductor optical amplifiers for weak fiber Bragg gratings", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 892434 (15 October 2013); https://doi.org/10.1117/12.2031185

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