基于铌酸锂薄膜波导的紧凑、温度不敏感的光电场传感器

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-06-25 DOI:10.1109/LPT.2025.3583002

Yan Song;Zhezheng Wang;Bingrui Sun;Bo Peng;Tiantao Hu;Zhiyao Zhang;Bao Sun;Yong Liu

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引用次数: 0

摘要

我们提出了一种温度不敏感传感器，使用紧凑的x切割薄膜铌酸锂（TFLN）马赫-曾德干涉仪，具有准对称臂（$700\ × 900~\mu $ m）和非阻塞电极，抑制波导臂之间的热不平衡。通过优化光程差和利用硅衬底的低热膨胀系数，该传感器无需主动调谐即可实现固有热稳定性。实验结果表明，在$0~^{\circ} $ C到$70~^{\circ} $ C范围内，0.2 rad偏置稳定，在250 MHz-3 GHz和0 dBV/m - 45 dBV/m范围内，RF响应误差<2 dB。

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A Compact and Temperature-Insensitive Optical Electric Field Sensor Based on Thin-Film Lithium Niobate Waveguides

We propose a temperature-insensitive sensor using a compact X-cut thin-film lithium niobate (TFLN) Mach-Zehnder interferometer with quasi-symmetric arms (

$700\times 900~\mu $

m) and non-obstructive electrodes, suppressing thermal imbalance between waveguide arms. By optimizing the optical path difference and leveraging the low thermal expansion coefficient of silicon substrate, the sensor achieves intrinsic thermal stability without active tuning. Experimental results demonstrate 0.2 rad bias stability across

$0~^{\circ } $

C to

$70~^{\circ } $

C with <2 dB RF response error for fields spanning 250 MHz–3 GHz and 0 dBV/m–45 dBV/m.

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来源期刊

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.