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

Volume

2

Issue

4

fYear

1990

fDate

4/1/1990 12:00:00 AM

Firstpage

301

Lastpage

303

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.53269

Filename

53269