Optimizing the signal-to-noise ratio for direct-detection BOTDA

被引：0
|
作者：
Wang, Sheng [1 ,2 ]
Yang, Zhisheng [1 ]
Soto, Marcelo A. [1 ,3 ]
Thevenaz, Luc [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, Grp Fibre Opt, SCI STI LT Stn 11, CH-1015 Lausanne, Switzerland
[2] Beijing Univ Posts & Telecommun, Beijing 100876, Peoples R China
[3] Univ Tecn Federico Santa Maria, Dept Elect Engn, Valparaiso 2390123, Chile
来源：
SEVENTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS (EWOFS 2019) | 2019年 / 11199卷
关键词：
Optical fiber sensor; stimulated Brillouin scattering;
D O I：
10.1117/12.2540930
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The signal-to-noise ratio (SNR) of the measurement for direct-detection Brillouin optical time-domain analyzers is modelled and experimentally validated, with and without the use of optical pre-amplification. Results indicate that preamplification associated with a good-quality photo-detector improves considerably the actual SNR, with only 1.5 dB penalty compared to the ideal shot noise limit.
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页数：4
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