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Investigating the Feasibility of Modified Uni-Traveling Carrier Photodetector for Use in Next-Generation Data Centers
LIU Haoran 1,YUAN Weifang 1,LIAO Zhuodong 1,DUAN Xiaofeng 2 *,XIAO Chunyang 2,LIU Qi 2
1.State Key Laboratory of Information Photonics & Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876;State Key Laboratory of Information Photonics & Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876;State Key Laboratory of Information Photonics & Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876;State Key Laboratory of Information Photonics & Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876;State Key Laboratory of Information Photonics & Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876;State Key Laboratory of Information Photonics & Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876
2.
*Correspondence author
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Subject:
Funding: the National Key Research and Development Program of China (No.No.2018YFB2200803), the Funds for Creative Research Groups of China(No.No.62021005)
Opened online:11 April 2022
Accepted by: none
Citation: LIU Haoran,YUAN Weifang,LIAO Zhuodong.Investigating the Feasibility of Modified Uni-Traveling Carrier Photodetector for Use in Next-Generation Data Centers[OL]. [11 April 2022] http://en.paper.edu.cn/en_releasepaper/content/4757278
 
 
High-bandwidth photodetectors are required for efficient data flow in data centers. Therefore, an electric field-enhanced modified uni-traveling carrier photodetector (EE-MUTC-PD) with a hybrid absorption layer was developed and evaluated in this study. The design entails the application of graded doping to enhance the electric field in the absorption region of the photodetector. This divides the absorption region into a partially depleted sub-region and depleted sub-region, thereby allowing the photogenerated electrons to drift through the absorption layer. The results demonstrate that the proposed EE-MUTC-PD, which has an electric field-enhanced hybrid absorption layer structure, can maintain a high bandwidth under the conditions of low optical power injection. In addition, it was found to exhibit high responsivity, which is useful for next-generation 800-Gb/s optical communication systems.
Keywords:optical communications; photodetectors; electric field; frequency response
 
 
 

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