Title :
240-km repeater spacing in a 5280-km WDM system experiment using 8 x 2.5 Gb/s NRZ transmission
Author :
Ma, Matthew X. ; Kidorf, Howard D. ; Rottwitt, Karsten ; Kerfoot, Frank W., III ; Davidson, Carl R.
Author_Institution :
Tyco Submarine Syst. Ltd. Labs., Holmdel, NJ, USA
fDate :
6/1/1998 12:00:00 AM
Abstract :
A repeater spacing of 240 km was experimentally demonstrated over a distance of 5280 km in an 8/spl times/2.5 Gb/s wavelength-division-multiplexing (WDM) transmission experiment. This long-span length was achieved by a combination of Raman amplification, a locally pumped erbium-doped fiber (EDF), and two remotely pumped EDFs. The total gain obtained from those four gain elements was about 50 dB. The performance demonstrated in this experiment was comparable to that of a system of similar length and capacity using conventional erbium-doped fiber amplifier (EDFA) technology at a repeater spacing of 80 km.
Keywords :
Raman spectra; digital communication; fibre lasers; laser beam applications; optical fibre communication; repeaters; wavelength division multiplexing; 2.5 Gbit/s; 20 Gbit/s; 240 km; 50 dB; 5280 km; NRZ transmission; Raman amplification; WDM system experiment; gain elements; locally pumped Er-doped fiber; remotely pumped EDF; repeater spacing; wavelength-division-multiplexing; Erbium-doped fiber amplifier; Erbium-doped fiber lasers; Laser excitation; Laser noise; Optical fiber amplifiers; Optical fibers; Optical signal processing; Repeaters; Stimulated emission; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
