High-temperature sensitivity of long-period gratings in B-Ge codoped fiber

被引：104

作者：

Shu, XW ^{[1
]}

Allsop, T ^{[1
]}

Gwandu, B ^{[1
]}

Zhang, L ^{[1
]}

Bennion, I ^{[1
]}

机构：

[1] Aston Univ, Photon Res Grp, Birmingham B4 7ET, W Midlands, England

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2001年 / 13卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

fiber Bragg gratings; long-period fiber grating; photosensitive fibers; temperature sensors; tunable filters;

D O I：

10.1109/68.935814

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 report an investigation of thermal properties of long-period fiber gratings (LPFGs) of various periods fabricated in the conventional B-Ge codoped fiber. It has been found that the temperature sensitivity of the LPFGs produced in the B-Ge fiber can be significantly enhanced as compared with the standard telecom fiber. A total of 27.5-nm spectral shift was achieved from only 10 degreesC change in temperature for an LPFG with 240-mum period, demonstrating a first ever reported high sensitivity of 2.75 nm/degreesC. Such an LPFG may lead to high-efficiency and low-cost thermal/electrical tunable loss filters or sensors with extremely high-temperature resolution. The nonlinear thermal response of the supersensitive LPG was also reported and first explained.

引用

页码：818 / 820

页数：3

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