High Q-factor and single mode integrated optic racetrack ring resonator for the sensing applications

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical and Quantum Electronics Pub Date : 2025-04-13 DOI:10.1007/s11082-025-08146-8

Venkateswara Rao Kolli, Indira Bahaddur, Srinivas Talabattula

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Abstract

This work describes, an integrated optic racetrack ring resonator (RRR) for various sensing applications, especially force sensing applications. Initially, two different configurations of RRR are optimized using the Finite-Difference-Time Domain (FDTD) method to obtain high sensitivity, a large FSR, high Q factor, and high intensity. The optimized dimensions of two RRRs are considered as radius is 5 μm, the racetrack ring waveguide width is 500 nm, input–output port width is 450 nm and thickness is 220 nm. These improved RRRs are used in the design of two distinct force sensors. The photo-elastic effect principle is adhered by the sensor. There are two stages to the force sensor analysis. The Finite Element Method is used for the stress analysis, and field propagation analysis of sensing element RRR is carried out by FDTD. This sensor provides a high sensitivity of 80 pm and 120 pm for two force sensors, respectively. The sensor provides Q-factor of 8153 and 15,490 at the coupling gap of 150 nm and 200 nm respectively obtained for the force range of 0–1 μN.

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用于传感应用的高q因子单模集成光学赛道环形谐振器

这项工作描述了一种集成的光学赛道环形谐振器（RRR），用于各种传感应用，特别是力传感应用。首先，采用时域有限差分（FDTD）方法对两种不同的RRR配置进行优化，以获得高灵敏度、大FSR、高Q因子和高强度。以半径为5 μm、赛道环形波导宽度为500 nm、输入输出端口宽度为450 nm、厚度为220 nm为优化尺寸。这些改进的rrr被用于设计两种不同的力传感器。该传感器遵循光弹性效应原理。力传感器的分析分为两个阶段。应力分析采用有限元法，感应元件RRR的场传播分析采用时域有限差分法。该传感器为两个力传感器分别提供80 pm和120 pm的高灵敏度。在0 ~ 1 μN的力范围内，传感器在耦合间隙为150 nm和200 nm处的q因子分别为8153和15490。

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来源期刊

Optical and Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.60

自引率

20.00%

发文量

810

审稿时长

3.8 months

期刊介绍： Optical and Quantum Electronics provides an international forum for the publication of original research papers, tutorial reviews and letters in such fields as optical physics, optical engineering and optoelectronics. Special issues are published on topics of current interest. Optical and Quantum Electronics is published monthly. It is concerned with the technology and physics of optical systems, components and devices, i.e., with topics such as: optical fibres; semiconductor lasers and LEDs; light detection and imaging devices; nanophotonics; photonic integration and optoelectronic integrated circuits; silicon photonics; displays; optical communications from devices to systems; materials for photonics (e.g. semiconductors, glasses, graphene); the physics and simulation of optical devices and systems; nanotechnologies in photonics (including engineered nano-structures such as photonic crystals, sub-wavelength photonic structures, metamaterials, and plasmonics); advanced quantum and optoelectronic applications (e.g. quantum computing, memory and communications, quantum sensing and quantum dots); photonic sensors and bio-sensors; Terahertz phenomena; non-linear optics and ultrafast phenomena; green photonics.