Title :
Single-channel to multi-channel upgrade of 10-Gb/s 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
Abstract :
We have demonstrated an upgrade technique, which allows one to upgrade a single-channel 10 Gb/s transmission system to a four-channel WDM system with a total capacity of 40 Gb/s without changes to the transmission fiber. Raman gain from 1-W of diode pump power increases the power budget by 7.4 dB corresponding to sensitivities of -45.1 dBm or better for all channels. The pump wavelength of 1453 nm was selected for optimum performance in the 1550 nm to 1560 nm range. The transmitter consists of one DFB laser (in the case of single-channel measurements) or four DFB lasers (for the WDM measurements), which are then combined in a fiber directional coupler.
Keywords :
Raman lasers; channel capacity; distributed feedback lasers; fibre lasers; optical directional couplers; optical fibre communication; optical fibre couplers; optical transmitters; wavelength division multiplexing; 1 W; 10 Gbit/s; 10-Gb/s transmission systems; 1453 nm; 1550 to 1560 nm; 40 Gbit/s; DFB laser transmitter; Raman amplification; Raman gain; WDM measurements; diode pump power; fiber directional coupler; four-channel WDM system; optimum performance; power budget; pump wavelength; sensitivities; single-channel to multi-channel upgrade; total capacity; transmission fiber;
Conference_Titel :
Optical Communication, 1996. ECOC '96. 22nd European Conference on
Conference_Location :
Oslo, Norway
Print_ISBN :
82-423-0418-1
