Slow-Light Effect and Mode Selection of Double Fiber Ring With a Fiber Bragg Grating
Slow-Light Effect and Mode Selection of Double Fiber Ring With a Fiber Bragg Grating
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光纤布拉格光栅双光纤环的慢光效应及模式选择
DOI：
10.1109/jphot.2017.2782663
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发表时间：
2018
影响因子：
2.4
通讯作者：
Cai Haiwen
中科院分区：
文献类型：
--
作者：
Qin Xiaoqiong;Fang Zujie;Ying Kang;Ding Zhidan;Wang Di;Wei Fang;Yang Fei;Ye Qing;Qu Ronghui;Cai Haiwen
本文提出了一种由双环谐振腔和均匀光纤布拉格光栅（FBG）组成的新型慢光反射器，基于其放大的群延迟，可以用作窄线宽光纤激光器的反射镜，也可以用作高灵敏度传感器。本文对其特性进行了理论和实验研究。与单光纤环相比，由于游标效应，谐振幅度受到调制，有效模式间距大大扩展，从而具有更好的模式选择性。据信，在窄线宽激光器的应用中，跳模会被有效抑制，并且在传感器应用中分辨率将得到提高。
A novel slow-light reflector composed of a double-ring resonator with a uniform fiber Bragg grating (FBG) incorporated is proposed in this paper, which can be used as a mirror of narrow-linewidth fiber laser, based on its enlarged group delay, and as a high-sensitivity sensor. Its characteristics are investigated theoretically and experimentally in this paper. Compared with the single fiber ring the amplitude of resonance is modulated, the effective mode spacing is expanded greatly, due to the Vernier effect, giving much better mode selectivity. Mode hopping is believed to be suppressed effectively in applications of narrow-linewidth lasers, and resolution will be enhanced in sensor applications.