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Proceedings of 2010 Cross-Strait Conference on Information Science and Technology (CSCIST 2010 E-BOOK)

Qinhuangdao,China,7.9-7.13，2010

ISBN: 978-1-935068-15-0 Scientific Research Publishing, USA

E-Book 840pp Pub. Date: July 2010

Category: Computer Science & Communications

Price: $120

Title: Theoretical Investigation of Fiber Bragg Grating–Based Fabry-Perot Sensor using Lorentzian Source
Source: Proceedings of 2010 Cross-Strait Conference on Information Science and Technology (CSCIST 2010 E-BOOK) (pp 543-545)
Author(s): Guolu Yin, Key Lab of All Optical Network & Advanced Telecommunication Network of EMC, Beijing Jiaotong University, Beijing
Shuqin Lou, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing
Abstract: A fiber Bragg grating –based Fabry-Perot sensor using laser source with Lorentzian spectrum is proposed. Considering the linewidth of the light source, we discussed the key influence factors on the sensor sensitivity, including the cavity length and the reflectivity of the FBG. The results show that the ratio between cavity length and the coherence length is smaller, the sensitivity will be higher. They also show that there exists an optimal grating reflectivity to achieve the maximum sensitivity when the cavity length is fixed. These research results have great significance for producing high sensitivity fiber Bragg grating –based Fabry-Perot sensor.
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