Fiber-optic Doppler velocimeter based on a dual-polarization fiber grating laser

Zeyuang Kuang; Linghao Cheng; Yizhi Liang; Hao Liang; Bai-Ou Guan

doi:10.1117/12.2184233

20 July 2015 Fiber-optic Doppler velocimeter based on a dual-polarization fiber grating laser

Zeyuang Kuang, Linghao Cheng, Yizhi Liang, Hao Liang, Bai-Ou Guan

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.

Citation Download Citation

Zeyuang Kuang, Linghao Cheng, Yizhi Liang, Hao Liang, and 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); https://doi.org/10.1117/12.2184233

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