Design of laser array based on REC technology

Qin Yixuan; Ni Yi; Yao Huixuan

doi:10.3788/IRLA201753.1005002

The sensing system and demodulation algorithm of laser array based on REC technology were analyzed and put forward. REC process met the low-cost mass production of laser array, and had the advantages of small size, and a greater practical value in the field of sensing in future. An efficient algorithm for laser scanning was proposed to measure the displacement of fiber Bragg grating (FBG) due to external stress. The system was unique in that accurate demodulation can be achieved by scanning only 0.4 nm bandwidth FBG spectrum instead of relying on scanning FBG main power peak and the algorithm can be applied in any FBG band, which enable using of wavelength-division multiplexing(WDM) for FBG sensing network. In the experiment, the single-channel and four-channel can accurately search the displacement of FBG reflection spectrum. Preliminary experiments demonstrate the effectiveness and feasibility of the proposed method, results show that the error of single-channel is less than 5 pm, four-channel's is below 2 pm, stress and algorithm results show good linearity. It has certain reference value for the multi-channel laser array sensing.

Design of laser array based on REC technology

1. School of Internet of Things Engineering,Jiangnan University,Wuxi 214122,China;

2. College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China

Received Date: 2017-02-12

Rev Recd Date: 2017-03-15

Publish Date: 2017-10-25

Key words:

Abstract: The sensing system and demodulation algorithm of laser array based on REC technology were analyzed and put forward. REC process met the low-cost mass production of laser array, and had the advantages of small size, and a greater practical value in the field of sensing in future. An efficient algorithm for laser scanning was proposed to measure the displacement of fiber Bragg grating (FBG) due to external stress. The system was unique in that accurate demodulation can be achieved by scanning only 0.4 nm bandwidth FBG spectrum instead of relying on scanning FBG main power peak and the algorithm can be applied in any FBG band, which enable using of wavelength-division multiplexing(WDM) for FBG sensing network. In the experiment, the single-channel and four-channel can accurately search the displacement of FBG reflection spectrum. Preliminary experiments demonstrate the effectiveness and feasibility of the proposed method, results show that the error of single-channel is less than 5 pm, four-channel's is below 2 pm, stress and algorithm results show good linearity. It has certain reference value for the multi-channel laser array sensing.

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Reference (15)

[1]	Xu Ning, Dai Ming. Design of distributed optical fiber sensor for temperature and pressure measurement[J]. Chinese Optics, 2015, 8(4):629-635. (in Chinese)徐宁, 戴明. 分布式光纤温度压力传感器设计[J]. 中国光学, 2015, 8(4):629-635.
[2]	Wu Jing, Wu Hanpin, Huang Junbin, et al. Large range FBG sensor for ship structure health monitoring[J]. Optics and Precision Engineering, 2014, 22(2):311-317. (in Chinese)吴晶, 吴晗平, 黄俊斌, 等. 用于船舶结构监测的大量程光纤布拉格光栅应变传感器[J]. 光学精密工程, 2014, 22(2):311-317.
[3]	Li Fang, He Jun, Xu Tuanwei, et al. Fiber laser sensing technology and its applications[J]. Infrared and Laser Engineering, 2009, 38(6):1025-1032. (in Chinese)李芳, 何俊, 徐团伟, 等.光纤激光传感技术及应用[J]. 红外与激光工程, 2009, 38(6):1025-1032.
[4]	Dai J, Yang M, Yu X, et al. Optical hydrogen sensor based on etched fiber Bragg grating sputtered with Pd/Ag composite film[J]. Opt Fiber Technol, 2013, 19(1):26-30.
[5]	Li Jianzhong, Liu Zhenqing, Lei Jiangbo, et al. Wavelength division multiplexed optical fiber hydrogen sensing system for multi-point measurement[J] Infrared and Laser Engineering, 2016, 45(8):0822006. (in Chinese)李建中, 刘振清, 雷江波, 等. 可实现多点测量的波分复用光纤氢气传感系统[J].红外与激光工程, 2016, 45(8):0822006.
[6]	Chen Yong, Wang Kun, Liu Huanlin, et al. Processing FBG sensing signals with three-point peak-detection algorithm[J]. Optics and Precision Engineering, 2013, 21(11):2751-2756. (in Chinese)陈勇, 王坤, 刘焕淋, 等. 三点寻峰算法处理光纤布拉格光栅传感信号[J]. 光学精密工程, 2013, 21(11):2751-2756.
[7]	Wu Jing, Wu Hanping, Huang Junbin, et al. Research progress in signal demodulation technology of fiber Bragg grating sensors[J]. Chinese Optics, 2014, 7(4):519-531. (in Chinese)吴晶, 吴晗平, 黄俊斌, 等. 光纤光栅传感信号解调技术研究进展[J]. 中国光学, 2014, 7(4):519-531.
[8]	Liu Sen, Ni Yi, Cao Baoli. Tunable laser module based on REC technology[J]. Laser Infrared, 2016, 46(3):289-293. (in Chinese)刘森,倪屹,曹宝丽. 基于REC技术的可调谐激光器模块[J]. 激光与红外, 2016, 46(3):289-293.
[9]	Ni Yi, Zhang Jie, Kong Xuan. Designing and testing of tunable DFB laser array using REC technology[J]. Chinese J Laser, 2015, 42(5):0502003. (in Chinese)倪屹, 张杰, 孔轩. 基于REC技术的可调谐DFB激光器阵列设计与测试[J]. 中国激光, 2015, 42(5):0502003.
[10]	Chen X F, Liu W, An J M, et al. Photonic integrated technology for multi-wavelength laser emission[J]. Chinese Science Bulletin, 2011, 56:3064-3071.
[11]	Atkins C G, Putnam M A, Friebele E J. Instrumentation for interrogating many-element fiber Bragg grating arrays[C]//Proc SPIE, 1995, 2444:257-257.
[12]	Ezbiri A, Kanellopoulos S E, Handerek V A. High resolution instrumentation system for fibre-Bragg grating aerospace sensors[J]. Opt Commun, 1998, 150(1-6):43-48.
[13]	Caucheteur C, Chah K, Lhomm F, et al. Autocorrelation demodulation technique for fiber Bragg grating sensor[J]. Photon Technol Lett IEEE, 2004, 16(10):2320-2322.
[14]	Huang C, Jing W, Liu K, et al. Demodulation of fiber Bragg grating sensor using cross-correlation algorithm[J]. Photon Technol Lett IEEE, 2007, 19(9):707-709.
[15]	Shen Xiaoyan, Zhang Liangyue, Sun Jie, et al. Improved layer peeling algorithm to realize FBG non-uniform strain sense demodulation[J]. Infrared and Laser Engineering, 2015, 44(12):3734-3739. (in Chinese)沈小燕, 张良岳, 孙杰, 等. 改进剥层法实现FBG非均匀应变传感解调[J]. 红外与激光工程, 2015, 44(12):3734-3739.

Design of laser array based on REC technology

doi: 10.3788/IRLA201753.1005002

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