公开(公告)号：US20190171044A1

公开(公告)日：2019-06-06

申请号：US16252450

申请日：2019-01-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yanbo Li ,  Xiaolu Song ,  Zhen Dong ,  Ruiqiang Ji ,  Shengmeng Fu ,  Li Zeng

IPC: G02F1/025

CPC classification number: G02F1/025 ,  G02F1/015 ,  G02F2001/0151

Abstract: An electro-optic modulator includes an input waveguide, a beam splitter connected to the input waveguide, a modulation arm that is disposed on each branch of the beam splitter and modulates a signal. Each modulation arm is correspondingly disposed with a first layer electrode and a second layer electrode. The first layer electrode is a high-frequency traveling wave electrode and is configured to change carrier concentration in the modulation arm, the second layer electrode is a direct current electrode having an inductor function, and an inductor formed in the second layer electrode is connected to the first layer electrode. The electro-optic modulator has functions of a bias tee, so that integration of the electro-optic modulator can be improved without affecting its performance. High-density packaging layout difficulty and cabling pressure can be effectively reduced, and cabling and packaging of a multi-channel high-speed signal on a base board can be implemented.