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Active and Passive Electronic Components
Volume 16, Issue 1, Pages 23-27

New Results on Bandwidth of GaAs PIN Photodiodes

Madrid, Spain

Received 3 March 1993; Accepted 31 March 1993

Copyright © 1993 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In this paper an equivalent circuit of a GaAs PIN photodiode for the millimeter wave range is proposed. Moreover, an approximate expression for the bandwidth of this circuit is obtained. By using the effective quality factor concept, an equation that includes the value of a hypothetical resistance involved in the circuit mentioned above, is derived. In the context of fiber optic communications, this "resistance" represents the losses due to the fiber-photodiode coupling.