Strain and temperature characterisation of sensing head based on suspended-core fibre in Sagnac interferometer

被引：15

作者：

Frazao, O. ^{[1
]}

Baptista, J. M. ^{[1
,3
]}

Santos, J. L. ^{[1
,4
]}

Kobelke, J. ^{[2
]}

Schuster, K. ^{[2
]}

机构：

[1] INESC Porto, Rua Campo Alegre 687, P-4169007 Oporto, Portugal

[2] IPHT Inst Photon Technol, D-07745 Jena, Germany

[3] Univ Madeira, Dept Matemat & Engn, P-9000390 Funchal, Portugal

[4] Univ Porto, Fac Ciencias, Dept Fis, P-4169007 Oporto, Portugal

来源：

ELECTRONICS LETTERS | 2008年 / 44卷 / 25期

关键词：

D O I：

10.1049/el:20081431

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 study of the strain and temperature characteristics of a sensing head based on a four-hole suspended-core fibre in a Sagnac interferometric configuration is reported. It is shown that, for the case of using an uncoated suspended-core fibre, a relatively large strain sensitivity is obtained (similar or equal to 1.94 pm/mu epsilon), while the temperature sensitivity is small (similar or equal to 0.29 pm/degrees C), pointing to a temperature-independent strain sensor. When the fibre is coated, the strain sensitivity remains essentially the same, while the temperature sensitivity becomes much larger and with a value that changes with the localisation of the temperature variation range.

引用

页码：1455 / +

页数：2

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