EDF-Based Edge-Filter Interrogation Scheme for FBG Sensors

Tiwari, Umesh and Thyagarajan, Krishna and Shenoy, M.R. and Jain, S.C. (2013) EDF-Based Edge-Filter Interrogation Scheme for FBG Sensors. IEEE Sensors Journal, 13 (4). pp. 1315-1319. ISSN 1530-437X

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A fiber Bragg grating (FBG) sensor employing an interrogation scheme based on erbium-doped fiber (EDF) edge detection filter, with enhanced detection bandwidth and intrinsic temperature insensitivity, is proposed and experimentally demonstrated. The edge filter is based on the spectral dependence of absorption in EDF with the possibility of tailoring the absorption profile using appropriate lengths of EDF. A wide filter bandwidth of about 10 nm and a slope detection sensitivity of 1.0 dB/nm in the C-band is demonstrated and validated by simulation results. The proposed scheme is versatile and allows for simultaneous interrogation of multiple FBGs.

Item Type: Article
Uncontrolled Keywords: Bragg gratings; edge detection; erbium; fibre optic sensors; light absorption; optical fibre filters
Subjects: CSIO > Photonics Instrumentation
Divisions: Photonics Instrumentation
Depositing User: Ms. J Shrivastav
Date Deposited: 19 Mar 2014 17:24
Last Modified: 19 Mar 2014 17:24
URI: http://csioir.csio.res.in/id/eprint/407

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