Affiliation:
1. Suzhou Lighting Chip Monolithic Optoelectronics Technology Co. Ltd.
Abstract
Lightweight, low-cost, and simple systems for magnetic field sensing are in high demand. Here, we demonstrate such a magnetic field sensing system by integrating a light source, detector, magnetic fluid (MF), and plastic optical fiber (POF). Two bifunctional AlGaInP diodes with identical multiple-quantum well structures separately function as the light source and the detector of the sensing system due to the partial overlap between the electroluminescence and responsivity spectra. Magnetic field sensing is realized by changing the amount of reflected light due to the change in reflection coefficient of the POF/MF interface caused by the ambient magnetic field. The chip-integrated POF magnetic field sensor exhibits a reliable operation with a detection range from 10 Gs to 400 Gs. The results indicate that the chip-integrated POF sensor is promising for magnetic field sensing.
Funder
National Key Research and Development Program of China
111 Project
National Natural Science Foundation of China
Jiangsu Postgraduate Research and Practice Innovation Program
Suzhou Innovation and Entrepreneurship Leading Talent Plan
Subject
Atomic and Molecular Physics, and Optics
Cited by
2 articles.
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1. Numerical analysis of a metal-insulator-metal waveguide-integrated magnetic field sensor operating at sub-wavelength scales;Sensing and Bio-Sensing Research;2024-02
2. Simultaneous Light Communication and Sensing of a Multi-Quantum Well Diode;2023 20th China International Forum on Solid State Lighting & 2023 9th International Forum on Wide Bandgap Semiconductors (SSLCHINA: IFWS);2023-11-27