Title :
Field demonstration of coherent WDM with a fibre amplifier repeater, for transparent optical network applications
Author :
Brain, M.C. ; Creaner, M.J. ; Steele, R.C. ; Spirit, D. ; Walker, N.G. ; Walker, G.R. ; Mellis, J. ; Al-Chalabi, S. ; Hale, W.B. ; Sturgess, I.C.C. ; Rutherford, M. ; Trivett, D.
Author_Institution :
British Telecom Res. Lab., Ipswich, UK
Abstract :
A series of field experiments performed with two-wavelength transmissions at 622 Mb/s over 200-km of installed single-mode fiber using a diode-pumped erbium-doped fiber amplifier repeater are described. Both differential phase-shift keying (DPSK) modulation and frequency-shift keying (FSK) modulation were employed, along with two implementations of automated endless polarization control. In a further field experiment, a power budget of 64 dB was demonstrated in the form of repeaterless DPSK transmission at 622 Mb/s over 264 km of installed fiber. The use of such a large power budget to accommodate the sharing of power between many wavelength channels and the accumulation of spontaneous emission noise through cascaded optical amplifier repeaters is discussed
Keywords :
frequency division multiplexing; frequency shift keying; optical links; optical modulation; phase shift keying; repeaters; 200 km; 264 km; 622 Mbit/s; DPSK; FSK; automated endless polarization control; coherent WDM; differential phase-shift keying; fibre amplifier repeater; field demonstration; frequency-shift keying; Differential quadrature phase shift keying; Diodes; Frequency modulation; Frequency shift keying; Optical fiber amplifiers; Optical fiber polarization; Optical noise; Phase modulation; Repeaters; Wavelength division multiplexing;
Conference_Titel :
Global Telecommunications Conference, 1990, and Exhibition. 'Communications: Connecting the Future', GLOBECOM '90., IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-87942-632-2
DOI :
10.1109/GLOCOM.1990.116611
