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Optical Engineering

Investigation of peak wavelength detection of fiber Bragg grating with sparse spectral data
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Paper Abstract

A simple equation for peak wavelength detection of fiber Bragg grating (FBG) with three spectral data is proposed, which has almost the same order of computing load as the conventional maximum search algorithm and uncertainty as the least-squares fit algorithm. The factors effecting performance of the new technique was investigated by simulation. For FBG with spectral bandwidth 0.2 nm, simulation results show that sample resolution lying between 0.07 and 0.16 nm have small measure standard deviation, which is less than 1 pm for SNR greater than 20.75 dB. Experiments were carried out with FBG and interrogator based on InGaAs linear array, and the results verified the effectiveness of the new technique.

Paper Details

Date Published: 14 March 2012
PDF: 6 pages
Opt. Eng. 51(3) 034403 doi: 10.1117/1.OE.51.3.034403
Published in: Optical Engineering Volume 51, Issue 3
Show Author Affiliations
Junfeng Jiang, Tianjin Univ. (China)
Tiegen Liu, Tianjin Univ. (China)
Kun Liu, Tianjin Univ. (China)
Yimo Zhang, Tianjin Univ. (China)

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