Title :
Six-wavelength Raman fibre laser for C- and L-band Raman amplification and dynamic gain flattening
Author :
Mermelstein, M.D. ; Horn, C. ; Radic, S. ; Headley, C.
Author_Institution :
OFS Fitel Labs., Somerset, NJ, USA
fDate :
6/20/2002 12:00:00 AM
Abstract :
A novel six-wavelength Raman fibre laser exhibiting a dynamic gain flattening capability in the C + L optical telecommunications band is demonstrated. The power distribution in the six lasing wavelengths is adjusted with voltage-controlled Bragg-grating output couplers. The fibre laser was used as a pump source for distributed Raman amplification in several transmission span lengths. For example, the multiwavelength laser provides an on/off gain of 19 dB over a 100 km span of True-Wave RS optical fibre. The measured gain flatness is 1.7 dB peak-peak and the effective noise figure ranges from 1.6 to -5.2 dB in the 1530 to 1600 nm bandwidth
Keywords :
Bragg gratings; Raman lasers; optical communication equipment; optical fibre amplifiers; optical fibre couplers; 100 km; 1530 to 1600 nm; 19 dB; C-band Raman amplification; L-band Raman amplification; True-Wave optical fibre; distributed Raman amplification; dynamic gain flattening; multiwavelength laser; noise figure; optical telecommunications band; power distribution; pump source; six-wavelength Raman fibre laser; spectral power distribution; successive Raman shifts; voltage-controlled Bragg-grating output couplers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020433
