High performance FBG interrogation technology with scan fiber laser

Yuanhong Yang; Youchun Ma; Minwei Yang

doi:10.1117/12.876183

9 November 2010 High performance FBG interrogation technology with scan fiber laser

Yuanhong Yang, Youchun Ma, Minwei Yang

Proceedings Volume 7853, Advanced Sensor Systems and Applications IV; 785307 (2010) https://doi.org/10.1117/12.876183
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

A Fiber Bragg gratings (FBG) Interrogation scheme with scan fiber laser was demonstrated. The ring cavity scan fiber laser was investigated and the scan fiber laser module was made and test, the 200Hz scan frequency, ~0.02nm line width, more than 40nm scan range and more than 1 mW output power were obtained. A 12 channels, 20 FBGs per channel FBG interrogator was made with this laser module and the high speed signal process circuit base on FPGA. The centroid finding method which has advantage on interrogation speed and accurate was taken for finding the peak of the return FBG spectrum. The FBG interrogator was test and less than 3pm standard deviation with 200Hz scan frequency were obtained.

Citation Download Citation

Yuanhong Yang, Youchun Ma, and Minwei Yang "High performance FBG interrogation technology with scan fiber laser", Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 785307 (9 November 2010); https://doi.org/10.1117/12.876183

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