Year
Month
(Peer-Reviewed) Photonics-assisted THz wireless communication enabled by wide-bandwidth packaged back-illuminated modified uni-traveling-carrier photodiode
Yuxin Tian 田雨欣 ¹, Boyu Dong 董博宇 ², Yaxuan Li 李雅萱 ², Bing Xiong 熊兵 ¹, Junwen Zhang 张俊文 ², Changzheng Sun 孙长征 ¹, Zhibiao Hao 郝智彪 ¹, Jian Wang 王健 ¹, Lai Wang 汪莱 ¹, Yanjun Han 韩彦军 ¹ ³, Hongtao Li 李洪涛 ¹, Lin Gan 甘霖 ¹, Nan Chi 迟楠 ², Yi Luo 罗毅 ¹ ³
¹ Beijing National Research Center for Information Science and Technology (BNRist), Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
中国 北京 清华大学电子工程系 北京信息科学与技术国家研究中心
² Key Laboratory of Information Science of Electromagnetic Waves (MoE), Department of Communication Science and Engineering, Fudan University, Shanghai 200433, China
中国 上海 复旦大学通信科学与工程系 电磁波信息科学教育部重点实验室
³ Flexible Intelligent Optoelectronic Device and Technology Center, Institute of Flexible Electronics Technology of THU, Jiaxing 314000, China
中国 嘉兴 浙江清华柔性电子技术研究院 柔性智能光电子技术研究所
Opto-Electronic Science, 2024-07-01
Abstract

This paper presents a wide-bandwidth back-illuminated modified uni-traveling-carrier photodiode (MUTC-PD) packaged with standard WR-5 rectangular waveguide for high-speed wireless communications. With optimized epitaxy structure and coplanar waveguide electrodes, the fabricated 4-μm-diameter PD exhibits ultra-flat frequency response and high saturation power. Integrated passive circuits including low-loss bias-tee and E-plane probe are designed to package the PD into a compact module with waveguide output.

The packaged PD module has demonstrated a flat frequency response with fluctuations within ±2.75 dB over a broadband of 140–220 GHz and a high saturated output power of −7.8 dBm (166 μW) at 140 GHz. For wireless communication applications, the packaged PD is used to implement 1-m free space transmission at carrier frequencies of 150.5 and 210.5 GHz, with transmission rates of 75 and 90 Gbps, respectively.
Photonics-assisted THz wireless communication enabled by wide-bandwidth packaged back-illuminated modified uni-traveling-carrier photodiode_1
Photonics-assisted THz wireless communication enabled by wide-bandwidth packaged back-illuminated modified uni-traveling-carrier photodiode_2
Photonics-assisted THz wireless communication enabled by wide-bandwidth packaged back-illuminated modified uni-traveling-carrier photodiode_3
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