Investigation of temperature dependence of tapered optical fibers

IF 3.1 3区物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION Infrared Physics & Technology Pub Date : 2025-01-23 DOI:10.1016/j.infrared.2025.105725

Qinghao Song , Ying Xiao , Zhihao Huang , Kun Sun , Qing Wu

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引用次数: 0

Abstract

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-MMF-SMF (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/°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.

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来源期刊

Infrared Physics & Technology 物理-光学

CiteScore

5.70

自引率

12.10%

发文量

400

审稿时长

67 days

期刊介绍： The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.