Instrumentation, Techniques, and Measurement

Analysis on error of laser frequency locking for fiber optical receiver in direct detection wind lidar based on Fabry–Perot interferometer and improvements

[+] Author Affiliations
Feifei Zhang

Chinese Academy of Science, Key Laboratory of Geospace Environment, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

University of Science and Technology of China, School of Earth and Space Science, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

Xiankang Dou

Chinese Academy of Science, Key Laboratory of Geospace Environment, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

University of Science and Technology of China, School of Earth and Space Science, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

Dongsong Sun

Chinese Academy of Science, Key Laboratory of Geospace Environment, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

University of Science and Technology of China, School of Earth and Space Science, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

Zhifeng Shu

Chinese Academy of Science, Key Laboratory of Geospace Environment, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

University of Science and Technology of China, School of Earth and Space Science, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

Haiyun Xia

Chinese Academy of Science, Key Laboratory of Geospace Environment, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

University of Science and Technology of China, School of Earth and Space Science, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

Yuanyuan Gao

Chinese Academy of Science, Key Laboratory of Geospace Environment, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

University of Science and Technology of China, School of Earth and Space Science, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

Dongdong Hu

Chinese Academy of Science, Key Laboratory of Geospace Environment, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

University of Science and Technology of China, School of Earth and Space Science, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

Mingjia Shangguan

Chinese Academy of Science, Key Laboratory of Geospace Environment, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

University of Science and Technology of China, School of Earth and Space Science, No. 96, Jinzhhai Road, Baohe District, Hefei 230026, China

Opt. Eng. 53(12), 124102 (Dec 02, 2014). doi:10.1117/1.OE.53.12.124102
History: Received August 26, 2014; Accepted October 24, 2014
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Abstract.  Direct detection Doppler wind lidar (DWL) has been demonstrated for its capability of atmospheric wind detection ranging from the troposphere to stratosphere with high temporal and spatial resolution. We design and describe a fiber-based optical receiver for direct detection DWL. Then the locking error of the relative laser frequency is analyzed and the dependent variables turn out to be the relative error of the calibrated constant and the slope of the transmission function. For high accuracy measurement of the calibrated constant for a fiber-based system, an integrating sphere is employed for its uniform scattering. What is more, the feature of temporally widening the pulse laser allows more samples be acquired for the analog-to-digital card of the same sampling rate. The result shows a relative error of 0.7% for a calibrated constant. For the latter, a new improved locking filter for a Fabry–Perot Interferometer was considered and designed with a larger slope. With these two strategies, the locking error for the relative laser frequency is calculated to be about 3 MHz, which is equivalent to a radial velocity of about 0.53m/s and demonstrates the effective improvements of frequency locking for a robust DWL.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Feifei Zhang ; Xiankang Dou ; Dongsong Sun ; Zhifeng Shu ; Haiyun Xia, et al.
"Analysis on error of laser frequency locking for fiber optical receiver in direct detection wind lidar based on Fabry–Perot interferometer and improvements", Opt. Eng. 53(12), 124102 (Dec 02, 2014). ; http://dx.doi.org/10.1117/1.OE.53.12.124102


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