Capacity upgrades of transmission systems by Raman amplification

Author

Hansen, P.B. ; Eskildsen, L. ; Grubb, S.G. ; Stentz, A.J. ; Strasser, T.A. ; Judkins, J. ; DeMarco, J.J. ; Pedrazzani, R. ; DiGiovanni, D.J.

Author_Institution

Bell Labs., Lucent Technol., Holmdel, NJ, USA

Volume

9

Issue

2

fYear

1997

Firstpage

262

Lastpage

264

Abstract

Raman amplification is added to a transmission system to provide an increase in power budget allowing for a four-fold upgrade in capacity either by TDM or WDM. Here, a TDM upgrade from 2.5 to 10 Gb/s and a WDM upgrade from a single 10-Gb/s channel to four channels of 10 Gb/s each were experimentally verified with an improvement in the power budget of 7.4 dB. Raman gain is an attractive upgrade method for installed systems requiring no changes to the fiber span.

Keywords

Raman lasers; Raman spectra; fibre lasers; optical fibre networks; optical pumping; time division multiplexing; wavelength division multiplexing; 2.5 to 10 Gbit/s; Gb/s channel; Raman amplification; Raman gain; Raman lasers; Raman spectra; TDM; TDM upgrade; WDM; WDM upgrade; attractive upgrade method; capacity upgrades; fiber span; four-fold capacity upgrade; installed systems; power budget; transmission systems; Erbium-doped fiber lasers; Gain measurement; Optical fiber communication; Optical fibers; Optical receivers; Pump lasers; Semiconductor laser arrays; Stimulated emission; Time division multiplexing; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.553113

Filename

553113