Chinese Journal of Lasers, Volume. 43, Issue 7, 710002(2016)
Study on PGC Demodulation System Based on All-Optical Microfiber Phase Modulator
The current phase generated carrier (PGC) demodulation system based on light source internal modulation method has phase noises of environmental and light source introduced by the interferometer arms difference and the high speed light source tuning. Aiming at this, a new PGC demodulation system based on microfiber all-optical phase modulator is studied. To satisfy the PGC demodulation requirements, the microfiber all-optical phase modulator based on light absorbing thermal effect is designed with bandwidth exceeding 10 kHz. Based on this, the PGC demodulation system of fiber hydrophone is constructed, and used to study the detection and demodulation performance of underwater acoustic signal. Experimental results show that the proposed system can realize good demodulation performance for the underwater signal with frequency below 3 kHz.
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Yu Yang, Zhang Xueliang, Sun Shilin, Song Zhangqi, Meng Zhou. Study on PGC Demodulation System Based on All-Optical Microfiber Phase Modulator[J]. Chinese Journal of Lasers, 2016, 43(7): 710002
Category: Remote Sensing and Sensors
Received: Jan. 21, 2016
Accepted: --
Published Online: Jul. 13, 2016
The Author Email: Yang Yu (56046728@qq.com)