20 July 2015 Fiber-optic Doppler velocimeter based on a dual-polarization fiber grating laser
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Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 965507 (2015) https://doi.org/10.1117/12.2184233
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of
Abstract
A fiber-optic Doppler velocimeter based on a dual-polarization fiber grating laser is demonstrated. The fiber grating laser produces two orthogonally polarized laser outputs with their frequency difference proportional to the intra-cavity birefringence. When the laser outputs are reflected from a moving targets, the laser frequencies will be shifted due to the Doppler effect. It shows that the frequency difference between the beat note of the laser outputs and the beat note of the reflected lasers is proportional to the velocity. The proposed fiber-optic Doppler velocimeter shows a high sensitivity of 0.64 MHz/m/s and is capable of measurement of wide range of velocity.
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Zeyuang Kuang, Zeyuang Kuang, Linghao Cheng, Linghao Cheng, Yizhi Liang, Yizhi Liang, Hao Liang, Hao Liang, Bai-Ou Guan, Bai-Ou Guan, } "Fiber-optic Doppler velocimeter based on a dual-polarization fiber grating laser", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 965507 (20 July 2015); doi: 10.1117/12.2184233; https://doi.org/10.1117/12.2184233
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