High sensitivity of dual resonant peaks of long-period fibre grating to surrounding refractive index changes

被引：62

作者：

Shu, XW ^{[1
]}

Zhu, XM

Jiang, S

Shi, W

Huang, DX

机构：

[1] Huazhong Univ Sci & Technol, Dept Optoelect, Wuhan 430074, Hubei, Peoples R China

[2] Wuhan Res Inst Posts & Telecommun, Solid Device Res Inst, Wuhan 430074, Hubei, Peoples R China

来源：

ELECTRONICS LETTERS | 1999年 / 35卷 / 18期

关键词：

D O I：

10.1049/el:19991040

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：

The spectral response of the dual resonant peaks of a 100 mu m period fibre grating to surrounding refractive index (SRI) from n = 1 to 1.74 has been investigated. The two peaks were found to shift in opposite directions over -180 and +300nm, respectively, as the SRI changed. A novel chemical sensing scheme with enhanced sensitivity based on the measurement of the separation of the two peaks instead of a shift in a single peak is also presented.

引用

页码：1580 / 1581

页数：2

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