高性能铌酸锂薄膜电光调制器的结构模拟与设计优化

IF 1.1 4区工程技术 Q4 OPTICS

Optical Engineering Pub Date : 2023-11-01 DOI:10.1117/1.OE.62.11.115103

Hao Chen, Wenyuan Liao, Shaohua Yang, Huafeng Dong, Ying Shi, Huangfan Wang, Fugen Wu

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引用次数: 0

摘要

摘要铌酸锂薄膜（TFLN）电光调制器（EOM）具有带宽高、半波电压低、能量损耗小等特点，被广泛应用于光通信系统。基于有限元法的分析，我们优化了调制器的结构参数，并提出了一种带有 S 形弯曲耦合器和覆盖有二氧化硅层的电极间隙的 EOM。该器件的半波压长乘积为 2.13 V - F，带宽大于 75 GHz，光损耗小于 0.1 dB / cm。此外，我们还提出利用机器学习中的线性回归算法来帮助确定高性能调制器的参数，这为 TFLN 调制器的设计和优化提供了新思路。

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Structure simulation and design optimization of high-performance lithium niobate thin film electro-optic modulator

Abstract. Lithium niobate thin film (TFLN) electro-optic modulators (EOM) are widely used in optical communication systems due to their high bandwidth, low half-wave voltage, and low energy loss. Based on the analysis of the finite element method, we optimize the structure parameters of the modulator and propose an EOM with an S-bend coupler and an electrode gap covered with a SiO2 layer. The device exhibited a half-wave voltage-length product of 2.13 V · F, a bandwidth greater than 75 GHz, and an optical loss <0.1 dB / cm. Besides, we also propose employing the linear regression algorithm in machine learning to help determine the parameters of high-performance modulators, which provides a new idea for the design and optimization of TFLN modulators.

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来源期刊

Optical Engineering 工程技术-光学

CiteScore

2.70

自引率

7.70%

发文量

393

审稿时长

2.6 months

期刊介绍： Optical Engineering publishes peer-reviewed papers reporting on research and development in optical science and engineering and the practical applications of known optical science, engineering, and technology.