Temperature sensor based on an erbium-doped fiber Sagnac interferometer

被引：15

作者：

Lebarck Pizzaia, Joao Paulo ^{[1
]}

Silva, Rodolpho Ladislau ^{[1
]}

Leal-Junior, Arnaldo Gomes ^{[2
]}

Schmidt Castellani, Carlos Eduardo ^{[1
]}

机构：

[1] Univ Fed Espirito Santo, Elect Engn Dept, Avenidade Fernando Ferrari, Vitoria, ES, Brazil

[2] Univ Fed Espirito Santo, Mech Engn Dept, Avenidade Fernando Ferrari, Vitoria, ES, Brazil

来源：

APPLIED OPTICS | 2022年 / 61卷 / 09期

关键词：

HIGH-SENSITIVITY; GAIN;

D O I：

10.1364/AO.448377

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The development of a highly sensitive all-fiber temperature sensor based on a Sagnac interferometer configuration is demonstrated here. We use 10 m of an erbium-doped fiber (EDF) as a passive sensing element inside the Sagnac loop, taking advantage of the extra birefringence added by the presence of the doping elements. Using a standard interrogation method of simply tracing a interference peak, we were able to detect temperature variations with a sensitivity of up to 0.2 nm/degrees C and high linearity. The results demonstrate, for the first time, that the usage of an EDF as a totally passive element can be an interesting option to extend the range of parameter possibilities achievable for highly sensitive temperature sensors. (C) 2022 Optica Publishing Group

引用

页码：2352 / 2356

页数：5

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