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Proceedings Paper

Photoresponse characteristics of uni-traveling-carrier photodiodes
Author(s): Tadao Ishibashi; Tomofumi Furuta; Hiroshi Fushimi; Hiroshi Ito
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Paper 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.

Paper Details

Date Published: 9 July 2001
PDF: 11 pages
Proc. SPIE 4283, Physics and Simulation of Optoelectronic Devices IX, (9 July 2001); doi: 10.1117/12.432597
Show Author Affiliations
Tadao Ishibashi, NTT Photonics Labs. (Japan)
Tomofumi Furuta, NTT Photonics Labs. (Japan)
Hiroshi Fushimi, NTT Photonics Labs. (Japan)
Hiroshi Ito, NTT Photonics Labs. (Japan)

Published in SPIE Proceedings Vol. 4283:
Physics and Simulation of Optoelectronic Devices IX
Yasuhiko Arakawa; Peter Blood; Marek Osinski, Editor(s)

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