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

Junfeng Jiang; Tiegen Liu; Kun Liu; Yimo Zhang

doi:10.1117/1.OE.51.3.034403

14 March 2012 Investigation of peak wavelength detection of fiber Bragg grating with sparse spectral data

Junfeng Jiang, Tiegen Liu, Kun Liu, Yimo Zhang

Author Affiliations +

Funded by: National Basic Research Program of China, National Natural Science Foundation of China, New Faculty Fund for the Doctoral Program of Higher Education, Tianjin Science and Technology Support Key Project, Shenzhen Key Laboratory of Sensor Technology Open Project

Optical Engineering, Vol. 51, Issue 3, 034403 (March 2012). https://doi.org/10.1117/1.OE.51.3.034403

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.

Citation Download Citation

Junfeng Jiang, Tiegen Liu, Kun Liu, and Yimo Zhang "Investigation of peak wavelength detection of fiber Bragg grating with sparse spectral data," Optical Engineering 51(3), 034403 (14 March 2012). https://doi.org/10.1117/1.OE.51.3.034403

Published: 14 March 2012

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