Fiber laser cascaded with an MZ interferometer for simultaneous measurement of temperature and refractive index

被引：0
|
作者：
Li, Jingwen [1 ]
Hong, Tianjia [1 ]
Yu, Desheng [1 ]
Che, Kaijun [1 ]
Chen, Lujian [1 ]
机构：
[1] Xiamen Univ, Sch Elect Sci & Engn, Fujian 361005, Peoples R China
来源：
APPLIED OPTICS | 2023年 / 62卷 / 34期
基金：
中国国家自然科学基金;
关键词：
SURFACE-PLASMON RESONANCE; SENSOR; PROFILOMETRY; SENSITIVITY;
D O I：
10.1364/AO.505516
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A fiber laser with strong spontaneous emission and high signal-to-noise ratio is proposed and experimentally demonstrated for simultaneous measurement of temperature and refractive index (RI). By cascading a single MZ interferometer, the power and the emission spectrum of the fiber laser are modulated by surrounding temperature and RI. The dual parameters are determined from the measured power change and interference dip shift. A temperature sensitivity of 0.146 dB/degrees C (-0.06 nm/degrees C) in the range from 20 degrees C to 90 degrees C at an RI of 1.3910 and an RI sensitivity of 156.07 dB /RIU (-153.70 nm/RIU) in the range from 1.3333 to 1.3910 at 20 degrees C are achieved. (c) 2023 Optica Publishing Group
引用
收藏
页码：9119 / 9124
页数：6
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