激光与光电子学进展, 2018, 55 (11): 110003, 网络出版: 2019-08-14
布里渊光时域分析系统性能提高方法综述 
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Review of Methods for Improving Performance of Brillouin Optical Time-Domain Analysis System
图 & 表
图 2. 应用光纤拉曼放大器的BOTDA系统通用原理图[8]
Fig. 2. General schematic of BOTDA assisted by fiber Raman amplifier[8]
图 3. 基于随机激光的分布式光纤传感原理图[15]
Fig. 3. Schematic of distributed fiber sensing based on random laser[15]
图 4. 拉曼抽运光RIN对BOTDA检测信号信噪比的影响[16]
Fig. 4. SNR degradation of signal detected by BOTDA as a function of RIN level of Raman pump light[16]
图 5. Simplex编码BOTDA传感实验系统[18]
Fig. 5. Experimental setup for the Simplex coded-BOTDA sensor[18]
图 6. 采用EDFA的Simplex编码BOTDA系统实验验证图[23]。(a) BGS的测量结果;(b)光纤沿线BFS的测量结果
Fig. 6. Experimental validation of the Simplex coded-BOTDA assisted by EDFA[23]. (a) Measured profile of BGS; (b) measured profile of BFS versus distance
图 8. Walsh编码及传统PSP-BOTDA系统BFS测量结果对比图[36]
Fig. 8. Comparison in BFS distribution between measurements with Walsh code and the conventional PSP-BOTDA system[36]
图 9. Simplex编码预抽运脉冲示意图[40]。(a)传统脉冲与预抽运脉冲;(b) 3 bit归零格式Simplex编码传统脉冲和预抽运脉冲
Fig. 9. Schematic of Simplex coding pre-pumped pulse[40]. (a) Conventional pump pulse and pre-pumped pulse; (b) conventional pump pulse and pre-pumped pulse of 3 bit Simplex coding
图 10. 双边带探测BOTDA中信号相互作用及信号调制原理图[46]。(a)双边带探测BOTDA中布里渊作用原理;(b)移频双边带探测BOTDA中布里渊作用原理;(c)移频双边带探测BOTDA中BGS和BLS叠加结果;(d)双边带探测BOTDA中信号调制原理
Fig. 10. Brillouin interaction and frequency modulation in the dual-probe BOTDA[46]. (a) Brillouin interaction of the conventional dual-probe BOTDA; (b) Brillouin interaction of the dual-probe BOTDA with the pump shifted in frequency; (c) combination of BGS and BLS for the dual-probe BOTDA with the pump shifted in frequency; (d) frequency modulation in the dual-probe BOTDA
图 11. 相干检测BOTDA实验系统[48]
Fig. 11. Experimental setup of BOTDA based on coherent detection[48]
图 13. 多频抽运光调制及时分复用原理图[51]
Fig. 13. Schematic of the frequency modulation and time multiplexing of multi-frequency pump light[51]
王健健, 李永倩. 布里渊光时域分析系统性能提高方法综述[J]. 激光与光电子学进展, 2018, 55(11): 110003. Jianjian Wang, Yongqian Li. Review of Methods for Improving Performance of Brillouin Optical Time-Domain Analysis System[J]. Laser & Optoelectronics Progress, 2018, 55(11): 110003.
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