Ultrafast FBG Interrogator Based on Time-Stretch Method

被引：30

作者：

Lei, Meng ^{[1
]}

Zou, Weiwen ^{[1
]}

Li, Xing ^{[1
]}

Chen, Jianping ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2016年 / 28卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Time stretch; fiber Bragg grating (FBG); wavelength-to-time mapping; mode-locked laser (MLL); BRAGG GRATING SENSORS; DOPED FIBER LASER; WAVELENGTH; DEMODULATION; SYSTEM; STRAIN;

D O I：

10.1109/LPT.2015.2513903

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We demonstrate an experimental realization of the time-stretch configured fiber Bragg grating (FBG) interrogator with an ultrafast speed. The interrogator consists of a home-made ultrabroadband fiber laser, an FBG sensor array, and two dispersive elements (single mode fibers). A time-stretch method is employed to convert the wavelength shift of the FBG sensor array to time shift via the principle of wavelength-to-time mapping. It is theoretically and experimentally demonstrated that the wavelength-related time shift suffers no influence although the Bragg wavelength and bandwidth of the strained FBG might be different. The interrogator works in real time, so that a single-shot measurement without carrying out any averaging is feasible.

引用

页码：778 / 781

页数：4

共 27 条

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