提高高灵敏度等离子体-光子马赫-曾德尔干涉仪折射率传感器的检测极限

IF 2.4 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Journal Pub Date : 2025-08-11 DOI:10.1109/JPHOT.2025.3597420

Stelios Simos;Lamprini Damakoudi;Dimosthenis Spasopoulos;Konstantinos Fotiadis;Evaggelia Chatzianagnostou;Jose Carreira;Gabriele Navickaite;Michael Geiselmann;Juan Arocas;Jean-Claude Weeber;Dimitris. V. Bellas;Eleftheria Lampadariou;Elefterios Lidorikis;Konstantinos Vyrsokinos;Nikos Pleros

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引用次数: 0

摘要

本研究提出了一种集成在Si3N4平台上的双等离子体-光子分支马赫-曾德尔干涉仪折射率传感器，传感器和参考臂都带有相同的铝等离子体金属条纹。实验评估表明，与最先进的等离子体光子MZI传感器相比，该配置的体灵敏度高达8801 nm/RIU，并且环境噪声恢复能力增强，等离子体部分仅位于传感器臂上。增强的噪声恢复能力以及高灵敏度导致实验获得4.4 × 10−6 RIU的低检测限，与参考MZI传感器中仅在其传感器臂处测量的5 × 10−5 RIU的检测限相比，提高了一个数量级。

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Improving Limit-of-Detection in High-Sensitivity Plasmo-Photonic Mach-Zehnder Interferometer Refractive Index Sensors

This work presents a dual plasmo-photonic branch Mach-Zehnder interferometer refractive index sensor integrated on a Si₃N₄ platform, with both the sensor and reference arms hosting identical aluminum plasmonic metal stripes. Experimental evaluation of the configuration reveals a bulk sensitivity up to 8801 nm/RIU and an increased environmental noise resilience compared to state-of-the-art plasmo-photonic MZI sensors with the plasmonic section residing only on the sensor arm. The enhanced noise resilience along with the high sensitivity results in an experimentally obtained low detection limit value of 4.4 × 10⁻⁶ RIU, im-proved by an order of magnitude compared to the detection limit of 5 × 10⁻⁵ RIU that was measured in a reference MZI sensor with a plasmonic stripe only at its sensor arm.

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来源期刊

IEEE Photonics Journal ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

4.50

自引率

8.30%

发文量

489

审稿时长

1.4 months

期刊介绍： Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.