Title :
DPSK coherent field demonstration system, and use of optical amplifier repeaters
Author_Institution :
British Telecom Res. Lab., Ipswich, UK
Abstract :
Coherent transmission may allow high-density WDM (wavelength division multiplexing) systems and passively routed networks to be realized using existing optical fiber, combined with simple optical amplifier repeaters, by providing the necessary wavelength selectivity and increased power budget. Practical progress towards these objectives is described. The first field demonstration of a 565-Mb/s DPSK (differential phase shift keying) heterodyne system in the operational environment is described, using miniaturized external cavity lasers and automated endless polarization control. Improvements in receiver performance and transmission experiments using a cascade of semiconductor optical amplifiers and an erbium-doped fiber amplifier repeater are reported
Keywords :
digital communication systems; optical communication equipment; optical fibres; optical links; phase shift keying; repeaters; 565 Mbit/s; DPSK; Er doped fibre; automated endless polarization control; coherent field demonstration system; differential phase shift keying; heterodyne system; high-density WDM; miniaturized external cavity lasers; operational environment; optical amplifier repeaters; optical fiber; passively routed networks; receiver performance; semiconductor optical amplifier cascade; transmission experiments; wavelength division multiplexing; wavelength selectivity; Differential quadrature phase shift keying; Optical fiber amplifiers; Optical fiber networks; Optical fibers; Optical mixing; Optical receivers; Repeaters; Semiconductor optical amplifiers; Stimulated emission; Wavelength division multiplexing;
Conference_Titel :
Global Telecommunications Conference and Exhibition 'Communications Technology for the 1990s and Beyond' (GLOBECOM), 1989. IEEE
Conference_Location :
Dallas, TX
DOI :
10.1109/GLOCOM.1989.63995
