Title :
Novel random access tunable heterodyne receiver using beat counting method for multichannel coherent systems
Author :
Kitajima, S. ; Sasaki, Seishi ; Tsushima, H. ; Okai, M. ; Yamashita, Katsumi
Author_Institution :
Hitachi Ltd., Tokyo, Japan
Abstract :
A beat counting method, which can allow a theoretically infinite transmitter frequency drift of the channel selection process, has been proposed for the implementation of a multichannel random access tunable heterodyne receiver. A channel switching time of less than 15 ms for a 150 GHz tuning range was obtained. It was confirmed that the proposed method would be very useful for the realisation of a multichannel (600 Mbit/s, 16 channel in the experiment) broadcasting system.
Keywords :
digital communication systems; frequency shift keying; multi-access systems; optical communication equipment; optical links; receivers; tuning; 15 ms; 150 GHz; 600 Mbit/s; FSK; beat counting method; channel switching time; digital transmission; multichannel coherent systems; multichannel random access; optical communication; tunable heterodyne receiver;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900087
