DocumentCode :
1123592
Title :
Low-noise optical receiver for high-speed optical transmission
Author :
Aiki, Mamoru
Author_Institution :
NTT Yokosuka Electrical Communication Labs., Kanagawa-Ken, Japan
Volume :
3
Issue :
6
fYear :
1985
fDate :
12/1/1985 12:00:00 AM
Firstpage :
1301
Lastpage :
1306
Abstract :
This paper describes the design of a low-noise optical receiver using Si bipolar transistors for high-speed optical transmission. The conventional common emitter-common collector circuit (CE-CC pair) and Darlingtou circuit (transimpedance amplifiers with parallel feedback) are studied. Optimal CE-CC pair collector-biasing current for attaining minimum noise current with a 400-MHz bandwidth is 2.7 mA, and less than 1.2 mA for the Darlington circuit. It is confirmed that the Darlington circuit is better than the CE-CC pair in signal-to-noise ratio by about 1.5 dB. The low-noise Darlington optical receiver with a Ge-avalanche photodiode has achieved an optical sensitivity of -41 dBm for a 400 Mbit/s RZ pulse with a bit error rate of 10-10. This is a 2.5-dB improvement in optical sensitivity over that of the conventional CE-CC receiver.
Keywords :
Bipolar transistors; Optical fiber receivers; Bipolar transistors; Feedback circuits; High speed optical techniques; Optical amplifiers; Optical design; Optical feedback; Optical noise; Optical receivers; Optical sensors; Stimulated emission;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/JLT.1985.1074345
Filename :
1074345
Link To Document :
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