A simple 8*8 optoelectronic crossbar switch

Author

Forrest, S.R. ; Tangonan, G.L. ; Jones, V.

Author_Institution

Dept. of Electr. Eng. & Mater. Sci., Univ. of Southern California, Los Angeles, CA, USA

Volume

7

Issue

4

fYear

1989

fDate

4/1/1989 12:00:00 AM

Firstpage

607

Lastpage

614

Abstract

The authors demonstrate the operation of an 8*8 optoelectronic crossbar switch consisting of integrated arrays of eight 1*8 GaAs metal-semiconductor-metal (MSM photodiodes connected in a current summing network to the input of Si bipolar transimpedance amplifiers. The MSM devices are also connected to TTL transistor-transistor logic) driven CMOS analog multiplexers which, in the ´off´ state, switch the detectors into an open-circuit mode. This particular combination of detectors and switching network gives a very high interchannel isolation, reduced circuit complexity, and low input noise. Data rates of 200 Mbit´s and switch reconfiguration times of -100 ns are achieved. System noise is calculated and measured, and the advantages of using fully integrated GaAs crossbar switch arrays are quantitatively discussed.<>

Keywords

amplifiers; integrated optoelectronics; multiplexing equipment; noise; optical switches; photodiodes; -100 ns; 200 Mbit/s; 8*8 optoelectronic crossbar switch; CMOS analog multiplexers; GaAs; MSM; Si; bipolar transimpedance amplifiers; current summing network; integrated arrays; interchannel isolation; metal-semiconductor-metal photodiodes; open-circuit mode; switch reconfiguration; switching network; system noise; transistor-transistor logic; CMOS logic circuits; Detectors; Gallium arsenide; Logic devices; Multiplexing; Operational amplifiers; Photodiodes; Reconfigurable logic; Switches; Switching circuits;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.19086

Filename

19086