Cryogenic Temperature Response of Reflection-Based Phase-Shifted Long-Period Fiber Gratings

被引：22

作者：

Martins, Raquel ^{[1
,2
,3
]}

Caldas, Paulo ^{[2
,4
]}

Teixeira, Bruno ^{[2
,4
]}

Azevedo, Joao ^{[2
,4
]}

Monteiro, Jose ^{[5
]}

Belo, Joao H. ^{[3
,6
]}

Araujo, Joao P. ^{[3
,6
]}

Santos, Jose L. ^{[4
]}

Rego, Gaspar ^{[2
,3
,4
]}

机构：

[1] Inst Syst & Comp Engn Porto Technol & Sci, P-4169007 Oporto, Portugal

[2] ESTG, Inst Politecn Viana do Castelo, Viana do Castelo, Portugal

[3] Univ Porto, Fac Ciencias, Dept Fis & Astron, P-4099002 Oporto, Portugal

[4] Inst Syst & Comp Engn Porto Technol & Sci, P-4169007 Oporto, Portugal

[5] FiberSensing, P-4470640 Maia, Portugal

[6] Univ Porto, IN Inst Nanosci & Nanotechnol, Inst Fis Mat, P-4169007 Oporto, Portugal

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2015年 / 33卷 / 12期

关键词：

Cryogenic temperatures; long-period fiber grating; optical fiber sensor; REFRACTIVE-INDEX; SENSORS; WRITTEN;

D O I：

10.1109/JLT.2014.2381236

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：

In this study, we investigated the temperature behavior of phase-shifted long-period fiber gratings (PS-LPFGs) inscribed in two types of optical fiber: B/Ge and SMF28. The experiments were carried out from 5 to 305 K using a superconducting quantum interference device magnetometer. The average temperature sensitivity obtained of -0.43 nm/K for PS-LPFGs inscribed in the B/Ge fiber is one order of magnitude larger than for PS-LPFGs inscribed in the SMF28 fiber, in the 60-240 K range. Values ranging from -0.08 nm/K up to 0.2 nm/K were obtained in the 5-35 K temperature range, which are considerably better than previous results achieved for metal-coated FBGs and also for LPFGs inscribed in a similar B/Ge codoped fiber. Nevertheless, further work is required in order to correctly address sensor reliability.

引用

页码：2511 / 2517

页数：7

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