✦ LIBER ✦

Interrogation of fiber Bragg grating sensor based on Er-doped fiber laser

✍ Scribed by Wengang Guo; Fuyun Lu; Shaojun Luo; Xiufeng Yang; Xiaoqun Zhou; Chao Lu

Publisher: John Wiley and Sons
Year: 2006
Tongue: English
Weight: 123 KB
Volume: 48
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.21773

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A novel interrogation of fiber Bragg grating (FBG) in a strain sensor, which is based on Er‐doped fiber laser's transient regime, is reported. The applied strain on FBG changes the laser cavity loss, which in turn modifies the laser's transient regime. The strain value can be obtained by measuring the build‐up time of the laser. This method translates wavelength shift information into time domain that can be accurately measured with low‐cost electronic devices. In the experiment, the strain sensitivity can be adjusted by simply controlling the pumping level of the laser, a sensitivity of 1.66 με/μs is achieved under fitful pumping level. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48:1904–1904, 2006; Published online in Wiley InterScience (www.interscience.wiley.com(. DOI 10.1002/mop.21773

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