Low-loss and broadband complementary dual-output electro-optic modulator based on thin-film lithium niobate  

作　　者：Tingan Li Chenglin Shang Xuanhao Wang Weiqiang Lü Zhiyao Zhang Cheng Zeng Yong Liu Jinsong Xia 李廷安;尚成林;王宣皓;吕伟强;张旨遥;曾成;刘永;夏金松(Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China;State Key Laboratory of Electronic Thin Films and Integrated Devices,School of Optoelectronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China)

机构地区：[1]Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China [2]State Key Laboratory of Electronic Thin Films and Integrated Devices,School of Optoelectronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China

出　　处：《Chinese Optics Letters》2024年第9期114-119,共6页中国光学快报（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2021YFB2800104);the National Natural Science Foundation of China(Nos.62175079 and 62205119).

摘　　要：Broadband,low-drive voltage electro-optic modulators are crucial optoelectronic components in the new-generation microwave photonic links and broadband optical interconnect network applications.In this paper,we fabricate a low-loss thinfilm lithium niobate complementary dual-output electro-optic modulator chip with a 3 dB electro-optic bandwidth of 59 GHz and a half-wave voltage(Vπ)of 2.5 V.The insert-loss of the packaged modulator is 4.2 dB after coupling with polarizationmaintaining fiber.The complementary dual-output modulator also shows a common-mode rejection ratio of 18 dB and a signal enhancement of 6.2 dB when adapted in microwave photonic links,comparable to commercial bulk lithium niobate devices.

关 键 词：thin-film lithium niobate electro-optic modulator microwave photonic links. 

分 类 号：TN761[电子电信—电路与系统]