Acta Photonica Sinica, Volume. 39, Issue 6, 1064(2010)
Investigation of Balanced Detection and Receiver for 1.55 μm Coherent Wind Lidar
Balanced receiver technique for signal detection in coherent lidar is analyzed.Mathematical modeling and signal-to-noise ratio of the balanced detection process is deduced.A numerical simulated system is established.For the same input signal,when the beam-splitter coefficient of balanced coherent detection is between 0.293 and 0.707,the signal-to-noise ratio of balanced coherent detection is higher than that of single detector coherent detection.And also direction of the wind can be obtained using the balanced detection technique,and experiment results are consisted well with simulation results.
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GAO Long, WANG Chun-hui, LI Yan-chao, CONG Hai-fang. Investigation of Balanced Detection and Receiver for 1.55 μm Coherent Wind Lidar[J]. Acta Photonica Sinica, 2010, 39(6): 1064
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Received: Jun. 2, 2009
Accepted: --
Published Online: Aug. 31, 2010
The Author Email: Long GAO (gaolong526@yahoo.cn)
CSTR:32186.14.