Title :
Distributed fiber Raman amplifiers with incoherent pumping
Author :
Zhang, Ting ; Zhang, Xiupu ; Zhang, Guodong
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Canada
fDate :
6/1/2005 12:00:00 AM
Abstract :
Distributed fiber Raman amplifier (DFRA) with incoherent pumping is investigated and its performance is compared to that with the conventional coherent pumping. It is shown that increasing the spectral bandwidth of incoherent pumping source can reduce the Raman gain ripple significantly, and degrade noise figure slightly at short wavelengths, compared to coherent pumping. To achieve the same gain flatness, the number of pumps for broad-band DFRAs with incoherent pumping can be significantly reduced compared to the coherent pumping.
Keywords :
Raman lasers; distributed amplifiers; laser noise; optical fibre amplifiers; optical fibre communication; optical pumping; Raman amplifiers; Raman gain ripple; broadband DFRA; distributed fiber amplifiers; gain flatness; incoherent pumping; incoherent pumping source; noise figure degradation; optical fiber communications; spectral bandwidth; Bandwidth; Brillouin scattering; Distributed amplifiers; Noise figure; Optical fiber amplifiers; Optical fiber communication; Optical fiber polarization; Optical fibers; Stimulated emission; Wavelength division multiplexing; Distributed amplifier; Raman effect; optical fiber amplifiers; optical fiber communications;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.846479
