Investigation of temperature dependence of tapered optical fibers

被引：0
|
作者：
Song, Qinghao [1 ]
Xiao, Ying [1 ,2 ]
Huang, Zhihao [1 ,2 ]
Sun, Kun [2 ]
Wu, Qing [2 ]
机构：
[1] Harbin Inst Technol, Space Environm Simulat Res Infrastruct, Harbin 150001, Peoples R China
[2] Harbin Univ Sci & Technol, Heilongjiang Prov Key Lab Laser Spect Technol & Ap, Harbin 150080, Peoples R China
来源：
INFRARED PHYSICS & TECHNOLOGY | 2025年 / 145卷
基金：
中国国家自然科学基金;
关键词：
Temperature sensor; Tapered optical fiber; Mach-Zehnder interference; 7 CORE FIBER; SENSOR;
D O I：
10.1016/j.infrared.2025.105725
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The temperature-sensitive performance of tapered optical fibers, characterized by high sensitivity and stability, is comprehensively studied. This sensor, based on the coupling between core and cladding modes resulting in Mach-Zehnder interference (MZI), adopts a single-mode fiber (SMF)-multimode fiber (MMF)-tapered SMF-MMFSMF (SMTMS) hybrid structure. The relationship between resonance wavelength shifts and surrounding temperatures is explored to evaluate its temperature sensitivity. Experimental results reveal that the multimode fiber length and the length of the conical region are critical factors affecting temperature sensitivity. Various SMTMS structures with differing MMF lengths and conical region lengths are fabricated, achieving a maximum sensitivity of -145.8 pm/degrees C. Notably, the sensor exhibits exceptional stability under laboratory conditions, further demonstrating its reliability for practical applications. With its high sensitivity and robust stability, this sensor shows great promise for applications in fields such as healthcare and environmental monitoring.
引用
收藏
页数：9
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