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

IF 2.3 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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引用次数: 0

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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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.