Title :
Photonic wavelength-division and time-division hybrid switching system utilizing coherent optical detection
Author :
Shimosaka, N. ; Fujiwara, M. ; Murata, S. ; Henmi, N. ; Emura, K. ; Suzuki, S.
Author_Institution :
NEC Corp., Kanagawa, Japan
fDate :
4/1/1990 12:00:00 AM
Abstract :
The application of coherent optical detection to a photonic wavelength-division (WD) and time-division (TD) hybrid switching system for a large-capacity switching is studied. Wavelength switching time is 1.8 ns, and the wavelength is stable after wavelength switching as wide as 3-4 AA. The results suggest the feasibility of switching over 20 channels (TD 4 channels, WD approximately 6 channels) for 100-Mb/s signals. This channel number can be increased to 256 channels (WD 64 channels) in view of the maximum wavelength sweep range (40 AA) of wavelength tunable laser diodes obtained so far.<>
Keywords :
frequency division multiplexing; optical communication equipment; switching systems; time division multiplexing; 1.8 ns; 100 Mbit/s; channel number; coherent optical detection; large-capacity switching; photonic wavelength-division; time-division hybrid switching system; wavelength sweep range; wavelength tunable laser diodes; High speed optical techniques; Optical detectors; Optical filters; Optical receivers; Optical switches; Optical transmitters; Switching systems; Tunable circuits and devices; Tuning; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
