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요약정보
一种提高BOTDR系统信噪比的方法研究
Resource Type
article
Authors
李勇涛
;
李永倩
;
杨志
;
李保罡
;
黄春林
Source
Guangtongxin yanjiu, Vol , Pp 49-51 (2010)
Subject
非线性反射镜
布里渊光时域反射仪
强度测量
频移测量
可靠性
Applied optics. Photonics
TA1501-1820
Language
Chinese
ISSN
1005-8788
Online Access
Open Access (DOAJ)
Find it @ DONGA
초록
提出了一种利用非线性反射镜提高布里渊光时域反射仪(BOTDR)系统信噪比的新型传感结构。通过将两根相同类型的传感光纤敷设在同一待测温度或应变环境下,结合光纤3 dB耦合器,可以形成非线性反射镜。利用非线性反射镜可以将传感系统输出信号的强度提高到只用一根传感光纤时的4倍,既能改善系统的信噪比及测量精度,也能提高传感系统的可靠性。
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