Photoresponse characteristics of uni-traveling-carrier photodiodes

Tadao Ishibashi; Tomofumi Furuta; Hiroshi Fushimi; Hiroshi Ito

doi:10.1117/12.432597

9 July 2001 Photoresponse characteristics of uni-traveling-carrier photodiodes

Tadao Ishibashi, Tomofumi Furuta, Hiroshi Fushimi, Hiroshi Ito

Proceedings Volume 4283, Physics and Simulation of Optoelectronic Devices IX; (2001) https://doi.org/10.1117/12.432597
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States

Abstract

Uni-traveling-carrier photodiode (UTC-PD) is a newly developed high-speed photodiode for generating high output current. The high saturation current is realized by its operation mode in which only electrons are used as active carriers. The bandwidth of a UTC-PD increases with increasing photocurrent level, which results from the fact that electron transport changes from diffusive to drift/diffusive motion due to the self-induced field in the absorption layer. In this report, photoresponse characteristics of InP/InGaAs UTC-PDs, which depend on device parameters and operation conditions, are discussed. Theoretical analysis for calculating 3-dB-down bandwidth as a function of operation current is also presented. The charge-control model for photodiodes, used in this study, allows us to predict small-signal bandwidth by numerical calculation.

Citation Download Citation

Tadao Ishibashi, Tomofumi Furuta, Hiroshi Fushimi, and Hiroshi Ito "Photoresponse characteristics of uni-traveling-carrier photodiodes", Proc. SPIE 4283, Physics and Simulation of Optoelectronic Devices IX, (9 July 2001); https://doi.org/10.1117/12.432597

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