High Sensitivity Temperature Sensing Based on Intermodal Coupling of a Tapered Multicore Fiber

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-03-11 DOI:10.1109/LPT.2025.3549906

Ying Chen;Wei Zhang;Yubo Liu;Yuxuan Qi;Jiacheng Lv;Zhuoran Yu;Hailong Liu;Jiasheng Ni;Yanjie Zhao

引用次数: 0

Abstract

A high-sensitivity fiber-optic temperature sensor consisting of a cascaded structure of multimode fiber (MMF), tapered seven-core fiber (TSCF) and multimode fiber (MMF) is proposed. The characteristics of the MMF-TSCF-MMF structure, referred to as the MTSCM, are analyzed and simulated using the beam propagation method (BPM) both before and after the seven-core fiber (SCF) is tapered. Simulations indicate a fiber Mach-Zehnder interferometer (MZI) is formed within the structure. Both simulation and experimental results demonstrate that the MTSCM structure exhibits a stronger evanescent field and more surrounding core and cladding modes. A sensitivity of −760 pm/°C is achieved by using MTSCM structure sensor in temperature measurement, significantly higher than that of the MSCM structure sensor. The proposed sensor holds a great potential for marine environment detection.

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.