Microsphere-Integrated Photonic Crystal Sensors for Spatially-Resolved Refractive Index Measurement

IF 2.3 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Jingyu Yu;Jiaming Qian;Jun Liu;Songlin Yang;Sorin Melinte;Kemao Qian;Chao Zuo;Ran Ye
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引用次数: 0

Abstract

Refractometers based on interferometric methods require sophisticated systems and stable environment. Non-interferometric refractometers can offer advantages in terms of reducing device costs and simplifying device configurations. In this Letter, we proposed a microsphere-integrated photonic crystal (PC) refractometer with a high spatial resolution. The refractometer forms magnified patterns of the PC substrate when immersed in liquid. By invoking the two-dimensional windowed Fourier transform to analyze the patterns, the refractive index of liquid can be determined. The validity of the proposed method is verified by measuring both standard uniform liquids and the dynamic process of oil-water merging, suggesting it is a simple and effective tool for measuring RI with spatially resolved micrometer-scale resolution.
空间分辨折射率测量微球集成光子晶体传感器
基于干涉测量方法的折射仪需要复杂的系统和稳定的环境。非干涉折射仪在降低设备成本和简化设备配置方面具有优势。在本文中,我们提出了一种具有高空间分辨率的微球集成光子晶体(PC)折射计。当PC基板浸在液体中时,折光计形成放大的图案。利用二维加窗傅里叶变换对其模式进行分析,可以确定液体的折射率。通过对标准均匀液体和油水融合动态过程的测量,验证了该方法的有效性,表明该方法是一种简单有效的测量空间分辨微米尺度RI的工具。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
IEEE Photonics Technology Letters
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.
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