Title :
Ultra-broadband high performance distributed Raman amplifier employing pump modulation
Author :
Fludger, C.R.S. ; Handerek, V. ; Jolley, N. ; Mears, Robert J.
Author_Institution :
Harlow Labs., Nortel Networks, Harlow, UK
Abstract :
A novel 110 nm, ultra-broadband distributed Raman amplifier has been constructed where pumps may be modulated to reduce non-linear interactions between pump wavelengths. This gave about I dB improvement in effective noise figure for shorter signal wavelengths channels and eliminated noise from an in-band four-wave mixing product produced by beating of pump wavelengths in the low dispersion transmission fibre.
Keywords :
Raman lasers; multiwave mixing; optical fibre amplifiers; optical fibre dispersion; optical modulation; optical noise; optical pumping; 110 nm; effective noise figure; in-band four-wave mixing product; low dispersion transmission fibre; nonlinear interactions; pump wavelengths beating; pumps modulation; ultra-broadband distributed Raman amplifier; wavelengths channels; Bandwidth; Distributed amplifiers; Fiber lasers; Laser excitation; Optical fiber polarization; Power lasers; Pulse modulation; Pump lasers; Semiconductor lasers; Stimulated emission;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002
Print_ISBN :
1-55752-701-6
DOI :
10.1109/OFC.2002.1036291
