Design of High-Speed UTC-PD With Optimization of Its Electron Transit Performance and Parasitic Capacitance

• Published in: IEEE photonics journal Vol. 15; no. 1; pp. 1 - 10
• Main Authors: Dong, Xiaowen, Liu, Kai, Huang, Yongqing, Duan, Xiaofeng, Wang, Qi, Ren, Xiaomin
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01.02.2023; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Capacitance; Design optimization; Drift; Electric fields; electron transit performance; High speed; high-speed UTC-PD with a diameter of 20 μm; high-speed UTC-PD with a diameter of 20μm; Luminous intensity; Negative differential mobility model; Optical coupling; Optical fibers; Parasitics (electronics); Photodiodes; Saturation; Universal time; Velocity

An 1500nm thick collector layer is adopted in the uni-travelling-carrier photodiode (UTC-PD) to reduce the PD's capacitance, while the PD's diameter is set to be 20μm for better saturation performance and optical coupling characteristic of a signal from a single mode fiber. By optimizing b...