Dual microring resonator sensor for simultaneous sensing of magnetic field and temperature

IF 2.6 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY Physics Letters A Pub Date : 2025-02-26 DOI:10.1016/j.physleta.2025.130397

Pranav George , A.C. Saritha , Ajith Ramachandran

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Abstract

This paper reports the simultaneous sensing of temperature and magnetic fields using a novel microring resonator waveguide system coupled to a slab waveguide, analysed through the finite element method. The system consists of a slab waveguide coupled to two ring waveguides, where the cladding of one ring is infiltrated with magnetic fluid (MF) and the other with ethanol. The vertical displacement and ring radii are optimised to achieve weak optical coupling between the rings and ensure almost independent resonances. The system demonstrates a linear response to both temperature and magnetic field variations, with high sensitivities of

175 {pm mT}^{- 1}

and

162 pm {}^{\circ}C^{- 1}

, respectively. Additionally, the device exhibits high-quality factors and figures of merit, making it highly suitable for compact, precise dual-sensing applications in environmental monitoring and space applications.

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双微环谐振器传感器，用于同时感应磁场和温度

本文报道了一种新型微环谐振腔波导系统与平板波导耦合的温度和磁场同步传感，并通过有限元方法进行了分析。该系统由一个平板波导耦合到两个环形波导组成，其中一个环的包层被磁流体（MF）渗透，另一个环的包层被乙醇渗透。优化了垂直位移和环半径，以实现环之间的弱光学耦合，并确保几乎独立的共振。该系统对温度和磁场变化均有线性响应，灵敏度分别为175pm mT−1和162pm mc−1°。此外，该设备具有高质量的因数和优点数字，使其非常适合环境监测和空间应用中的紧凑，精确的双传感应用。

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来源期刊

Physics Letters A 物理-物理：综合

CiteScore

5.10

自引率

3.80%

发文量

493

审稿时长

30 days

期刊介绍： Physics Letters A offers an exciting publication outlet for novel and frontier physics. It encourages the submission of new research on: condensed matter physics, theoretical physics, nonlinear science, statistical physics, mathematical and computational physics, general and cross-disciplinary physics (including foundations), atomic, molecular and cluster physics, plasma and fluid physics, optical physics, biological physics and nanoscience. No articles on High Energy and Nuclear Physics are published in Physics Letters A. The journal''s high standard and wide dissemination ensures a broad readership amongst the physics community. Rapid publication times and flexible length restrictions give Physics Letters A the edge over other journals in the field.