典型文献
Performance improvement method of single-ended BOTDA system based on Fresnel reflection
文献摘要：
To solve the problems of small signal intensity and low signal-to-noise ratio(SNR)in single-ended Brillouin optical time domain analysis(BOTDA)system based on Fresnel reflection,we propose and experimentally demonstrate a pulse coding single-ended BOTDA system,which can improve the SNR and temperature measurement accuracy.A single-ended BOTDA temperature sensing system using single pulse and pulse coding is designed,and the Brillouin time domain signal and Brillouin frequency shift under different pulse coding bits are measured.The experimental re-sults show that the fluctuations of Brillouin power and Brillouin frequency shift are gradually decreased with the in-crease of pulse coding bits,and the SNR under 32 bit Golay coding offers a 6.18 dB improvement with respect to tradi-tional single pulse system.And the temperature measurement accuracy under 32 bit coding over a 9.35-km-long sen-sing fiber can be accurately measured as 1.59℃,while providing a 1.73℃enhancement when compared to single pulse system.
文献关键词：
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作者姓名：
ZHANG Lixin;LI Yongqian;TIAN Min;LI Tian
作者机构：
Department of Electronic and Communication Engineering,North China Electric Power University,Baoding 071003,China;Hebei Key Laboratory of Power Internet of Things Technology,North China Electric Power University,Baoding 071003,China;Department of Computer,North China Electric Power University,Baoding 071003,China
文献出处：
引用格式：
[1]ZHANG Lixin;LI Yongqian;TIAN Min;LI Tian-.Performance improvement method of single-ended BOTDA system based on Fresnel reflection)[J].光电子快报（英文版）,2022(03):170-174
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0.433693
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