Acta Photonica Sinica, Volume. 48, Issue 9, 906003(2019)
Interferometric Optical Fiber Water Level Sensing System for Oceanic Monitoring Applications
In order to achieve ocean water level monitoring for effective tsunami warning, an allfiber interferometric water level sensing system is proposed and demonstrated. According to the large range and fast response of ocean water level variation, an interference structure based on doublecollimator alignment and a linear frequencychirp based phase demodulation method are adopted, achieving the ocean water level measurement with large range, high precision and fast response. The experimental results show that the measurable range of the water level sensing system is 0~109.14 m, the measurement accuracy can reach ±1 cm, with the response time of 0.01 s. The proposed system is demonstrated to be suitable for ocean water level monitoring and tsunami warning.
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PANG Shuo, LUO Zhengchun, WANG Zhongmin, CHANG Tianying, DAI Guangbin, YU Miao, WU Chongjian, CUI Hongliang. Interferometric Optical Fiber Water Level Sensing System for Oceanic Monitoring Applications[J]. Acta Photonica Sinica, 2019, 48(9): 906003
Received: Apr. 11, 2019
Accepted: --
Published Online: Oct. 12, 2019
The Author Email: Shuo PANG (pangshuo2018@126.com)