Compact Long-Period Fiber Gratings Based on Periodic Microchannels

被引：19

作者：

Guo, Jing-Chun ^{[1
]}

Yu, Yong-Sen ^{[1
]}

Xue, Yang ^{[1
]}

Chen, Chao ^{[1
]}

Yang, Rui ^{[1
]}

Wang, Chuang ^{[1
]}

Chen, Qi-Dai ^{[1
]}

Sun, Hong-Bo ^{[1
]}

机构：

[1] Jilin Univ, State Key Lab Integrated Optoelect, Coll Elect Sci & Engn, Changchun 130012, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2013年 / 25卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Femtosecond laser; fiber sensor; long-period fiber gratings (LPFGs); microchannels; FEMTOSECOND; FABRICATION; NANOFABRICATION;

D O I：

10.1109/LPT.2012.2227701

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：

A novel formation method of long-period fiber gratings (LPFGs) based on periodic microchannels, which are fabricated by femtosecond laser micromachining and selective chemical etching in conventional single-mode fibers, is proposed and experimentally demonstrated. This kind of grating may be as short as only 3 mm and exhibits low-temperature sensitivity of 9.95 pm/degrees C from 30 degrees C to 120 degrees C. The strain sensitivities of the resonant wavelength and peak loss are -2.4 nm/m epsilon and -3.5 dB/m epsilon, respectively. High refractive-index (RI) sensitivity with one order of magnitude larger than that of the conventional LPFGs near RI = 1.33 is achieved in general single-mode fibers.

引用

页码：111 / 114

页数：4

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