Bending characteristics of long-period fiber grating with a over-coupled resonant wavelength

被引：1

作者：

Tian, Xiaozhong ^{[1
]}

Guan, Chunying ^{[1
]}

Li, Shuqiang ^{[1
]}

Zhong, Xing ^{[1
]}

Yuan, Libo ^{[1
]}

机构：

[1] Harbin Engn Univ, Coll Sci, Minist Educ, Key Lab Infiber Integrated Opt, Harbin 150001, Peoples R China

来源：

ADVANCED SENSOR SYSTEMS AND APPLICATIONS V | 2012年 / 8561卷

关键词：

SENSORS; WRITTEN;

D O I：

10.1117/12.999518

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 CO2-induced LPG with an over-coupled resonant dip is fabricated. The bending characteristics of proposed LPG are experimentally studied in detail. The results show that the spacing between the two resonant wavelengths has a periodic behavior along circular directions. The spacing between the two resonant wavelengths changes nearly linearly against the curvature under certain bending directions. The bend sensitivities under two bending directions are 7.19nm/m and 3.13nm/m, respectively. In addition, the over-coupled dip splits into two dips when increases curvature under a special bending direction, which may be attributed to that new cladding mode meet coupling condition is excited.

引用

页数：4

共 11 条

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