Waveguide integrated high-speed black phosphorus photodetector on a thin film lithium niobate platform

被引:21
作者
Xue, Yu [1 ]
Wu, Xiaoxuan [2 ]
Chen, Kaixuan [3 ,4 ]
Wang, Junjia [2 ]
Liu, Liu [1 ,5 ]
机构
[1] Zhejiang Univ, Coll Opt Sci & Engn, Int Res Ctr Adv Photon, State Key Lab Modern Opt Instrumentat, East Bldg 5,Zijingang Campus, Hangzhou 310058, Peoples R China
[2] Southeast Univ, Natl Res Ctr Opt Sensors Commun Integrated Network, Sch Elect Sci & Engn, Nanjing 210096, Peoples R China
[3] South China Normal Univ, South China Acad Adv Optoelect, Guangdong Prov Key Lab Opt Informat Mat & Technol, Guangzhou 510006, Peoples R China
[4] South China Normal Univ, Natl Ctr Int Res Green Optoelect, Guangzhou 510006, Peoples R China
[5] Zhejiang Univ, Intelligent Opt & Photon Res Ctr, Jiaxing Key Lab Photon Sensing & Intelligent Imagi, Jiaxing Res Inst, Jiaxing 314000, Peoples R China
基金
中国国家自然科学基金;
关键词
PHOTONICS;
D O I
10.1364/OME.477278
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The thin film lithium niobate platform has shown its potential to support highperformance active and passive integrated photonic devices. Yet, due to the transparency of lithium niobate, it is not suitable for building a photodetector monolithically for conventional communication wavelengths. In this work, we demonstrate a high-speed photodetector on the thin film lithium niobate platform using hybrid integration of two-dimensional materials, i.e., black phosphorus. The black phosphorus and lithium niobate hybrid waveguide exhibit a high absorption coefficient of 1.56 dB/pm. The constructed metal-semiconductor-metal photodetector also presents a high responsivity of 2.64 A/W (at an input optical power of 25.1 pW). The 3-dB bandwidth of the device is as high as 1.97 GHz.(c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
引用
收藏
页码:272 / 281
页数:10
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