Spectrum-profile-identification-based wavelength division multiplexing method for a fiber Bragg grating sensor

Yuheng Pan; Junfeng Jiang; Weijia Lu; Huijia Yang; Kun Liu; Shuang Wang; Hui Wang; Tiegen Liu

doi:10.3788/COL201715.070605

Journals >Chinese Optics Letters >Volume 15 >Issue 7 >Page 070605 > Article

Chinese Optics Letters
Vol. 15, Issue 7, 070605 (2017)

Spectrum-profile-identification-based wavelength division multiplexing method for a fiber Bragg grating sensor

Yuheng Pan^1、2, Junfeng Jiang^1、*, Weijia Lu², Huijia Yang¹, Kun Liu¹, Shuang Wang¹, Hui Wang¹, and Tiegen Liu¹

Author Affiliations

¹Key Laboratory of Optoelectronics Information Technology, Institute of Optical Fiber Sensing of Tianjin University, MEC, Tianjin 300072, China

²School of Computer and Information Engineering, Tianjin Chengjian University, Tianjin 300384, China

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DOI: 10.3788/COL201715.070605 Cite this Article Set citation alerts

Yuheng Pan, Junfeng Jiang, Weijia Lu, Huijia Yang, Kun Liu, Shuang Wang, Hui Wang, Tiegen Liu. Spectrum-profile-identification-based wavelength division multiplexing method for a fiber Bragg grating sensor[J]. Chinese Optics Letters, 2017, 15(7): 070605 Copy Citation Text

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Abstract

A new wavelength division multiplexing method for fiber Bragg grating (FBG) sensors based on spectrum profile identification is proposed. In this method, FBGs and tilted FBG (TFBG) sensors are cascaded in a single fiber in one sensing channel. The different spectrum profiles enable the cross-correlation method to demodulate the wavelength. Therefore, the different types of sensors can occupy the same central wavelength band. Using this method, the multiplexing capacity is optimized. Experiment results demonstrate the feasibility of this method and it is useful for applications where large numbers of FBGs are needed.