A weak feedback effect based fiber laser sensor demodulated by a phase generated carrier scheme

Jianzhong Zhang; Zhenxing Yu; QianQian Hao; Quan Chai; Qi Li; Weimin Sun; Libo Yuan; G. D. Peng

doi:10.1117/12.975107

17 October 2012 A weak feedback effect based fiber laser sensor demodulated by a phase generated carrier scheme

Jianzhong Zhang, Zhenxing Yu, QianQian Hao, Quan Chai, Qi Li, Weimin Sun, Libo Yuan, G. D. Peng

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842139 (2012) https://doi.org/10.1117/12.975107
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

We propose a weak feedback effect based fiber laser sensor demodulated by a phase generated carrier (PGC) scheme. The weak feedback, realized by an optical fiber pigtail with a fiber end-face, couples a small part of light back to the fiber laser cavity to realize the light intensity modulation of the fiber laser. The sensor system based on the PGC demodulation scheme avoided the signal fading, caused by out of quadrature, and realizes the reliable vibration measurement.

Citation Download Citation

Jianzhong Zhang, Zhenxing Yu, QianQian Hao, Quan Chai, Qi Li, Weimin Sun, Libo Yuan, and G. D. Peng "A weak feedback effect based fiber laser sensor demodulated by a phase generated carrier scheme", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842139 (17 October 2012); https://doi.org/10.1117/12.975107

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