High-efficiency thin-film lithium niobate modulator with highly confined optical modes

被引：17

作者：

Chen, Nuo ^{[1
]}

Yu, Yalong ^{[1
]}

Lou, Kangping ^{[1
]}

Mi, Qingjiao ^{[1
]}

Chu, Tao ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou 310027, Peoples R China

来源：

OPTICS LETTERS | 2023年 / 48卷 / 07期

关键词：

SILICON; PHOTONICS; NITRIDE;

D O I：

10.1364/OL.481827

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a low-loss, high-efficiency lithium niobate electro-optic (EO) modulator with optical isolation trenches to achieve stronger field confinement and reduced light absorption loss. The proposed modulator realized considerable improvements, including a low half-wave voltage-length product of 1.2 V center dot cm, an excess loss of similar to 2.4 dB, and a broad 3-dB EO bandwidth of over 40 GHz. We developed a lithium niobate modulator with, to the best of our knowledge, the highest reported modulation efficiency of any Mach-Zehnder interferometer (MZI) modulator. (c) 2023

引用

页码：1602 / 1605

页数：4

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