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
收藏
页码：2352 / 2356
页数：5
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