All-fiber power sensor based on silicon-germanium core fiber F-P cavity

An all-optical power sensor based on silicon-germanium (SiGe) core fiber Fabry-Perot (F-P) cavity is proposed. The F-P sensor was formed by fusion splicing SiGe core fiber with conventional single-mode fiber (SMF). The 980 nm laser can be absorbed efficiently by the silicon-germanium material, resul...

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Bibliographic Details
Published in:Journal of physics. Conference series 2017-06, Vol.844 (1), p.12036
Main Authors: Wang, Tengjiao, Chen, Na, Zhao, Ziwen, Pang, Fufei, Chen, Zhenyi, Wang, Tingyun
Format: Article
Language:English
Subjects:
Fabry-Perot interferometers
Germanium
Physics
Sensors
Silicon germanides
Splicing
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Summary:An all-optical power sensor based on silicon-germanium (SiGe) core fiber Fabry-Perot (F-P) cavity is proposed. The F-P sensor was formed by fusion splicing SiGe core fiber with conventional single-mode fiber (SMF). The 980 nm laser can be absorbed efficiently by the silicon-germanium material, resulting in the temperature increase inside the cavity, which induces the drifts of the reflection spectrum. The injected power has a very good linear relationship with the drifts experimentally, and the power sensitivity is up to 1.7 nm/mW, which may have great potential for all-fiber power detector.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/844/1/012036