DocumentCode
1019097
Title
Coherent optical receiver for 680 Mbit/s using phase diversity
Author
Davis, A.W. ; Wright, S. ; Pettitt, M.J. ; King, J.P. ; Richards, K.
Author_Institution
Standard Telecommunication Laboratories Limited, Harlow, UK
Volume
22
Issue
1
fYear
1986
Firstpage
9
Abstract
A coherent optical receiver using a multiport optical coupler to provide phase diversity is described. By this means, only homodyne bandwidth is required in the signal processing, but with tolerances on the frequency tracking typical of heterodyne systems. Measured sensitivities with limited local-oscillator power are ¿47.5 dBm at 320 Mbit/s and ¿42 dBm at 680 Mbit/s. The results at the higher bit rate are strongly influenced by limited receiver module bandwidth.
Keywords
digital communication systems; optical communication equipment; baud rate 680 Mbit/s; coherent optical receiver; frequency tracking; homodyne bandwidth; limited local-oscillator power; multiport optical coupler; phase diversity; receiver module bandwidth; signal processing;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19860007
Filename
4256165
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