A novel algorithm based on DFB tunable laser array for demodulation of FBG sensors

• Guo Yu

  School of Internet of Things Engineering, Jiangnan University Nanjing University

• Yao Huixuan

  School of Internet of Things Engineering, Jiangnan University

• Wu Haodong

  Nanjing University

• Ni Yi

  School of Internet of Things Engineering, Jiangnan University

抄録

In this paper, a high effective demodulate algorithm based on tunable four-channel DFB (Distributed Feedback) laser array is proposed. In comparison with common algorithms which can work correctly when tunable laser have to be rapidly tuned through FBG’s (Fiber Bragg Grating) whole spectrum, the algorithm is unique in that accurate demodulation can be done by scanning only 0.4 nm bandwidth of FBG’s reflected spectrum and the scanned spectrum can be any part of the whole FBG spectrum including those regions with relatively low power. Therefore, the laser tuning time and response time of demodulation system is much more reduced which is important for most applications that need dynamic, real-time measurements. Wavelength-division multiplexing for FBG sensing network will be supported by the demodulating system and algorithm. Based on strain experiments of the FBG sensing system, excellent demodulation accuracy were demonstrated by the proposed algorithm.

収録刊行物

• IEICE Electronics Express

  IEICE Electronics Express 14 (20), 20170955-20170955, 2017

  一般社団法人 電子情報通信学会

キーワード

• demodulation algorithm
• tunable laser array
• FBG
• WDM

詳細情報

• CRID: 1390001205218754176
• NII論文ID: 130006179924
• DOI: 10.1587/elex.14.20170955
• ISSN: 13492543
• Web Site: https://www.jstage.jst.go.jp/article/elex/14/20/14_14.20170955/_pdf
• 本文言語コード: en
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