Title :
Compensation of intrachannel nonlinearities in 40-Gb/s pseudolinear systems using optical-phase conjugation
Author :
Chowdhury, A. ; Raybon, G. ; Essiambre, R.-J. ; Sinsky, J.H. ; Adamiecki, A. ; Leuthold, J. ; Doerr, C.R. ; Chandrasekhar, S.
Author_Institution :
Lucent Technol., Bell Labs., Murray Hill, NJ, USA
Abstract :
In this paper intrachannel nonlinearities in a return-to-zero differential-phase-shift-keyed (RZ-DPSK) 40-Gb/s 32/spl times/100-km system are compensated in the absence of signal power symmetry using a single LiNbO/sub 3/ conjugator and results in two decades of improvement in bit-error rate (BER). The reduction of transmission impairments enables the reach of the system to be extended from 5200 to 6400 km with a measured BER =5/spl times/10/sup -4/. This paper also presents a first-order perturbation analysis that describes the effects of optical-phase conjugation and dispersion mapping on the optical field of pulses.
Keywords :
compensation; differential phase shift keying; error statistics; optical fibre communication; optical phase conjugation; perturbation theory; 100 km; 32 km; 40 Gbit/s; 5200 to 6400 km; LiNbO/sub 3/; LiNbO/sub 3/ conjugator; bit-error rate; compensation; dispersion mapping; first-order perturbation analysis; intrachannel nonlinearities; optical field; optical pulses; optical-phase conjugation; pseudolinear systems; return-to-zero differential-phase-shift-keyed system; transmission impairments reduction; Bit error rate; Fiber nonlinear optics; Frequency conversion; Gain; High speed optical techniques; Nonlinear optics; Optical fiber communication; Optical fiber dispersion; Optical mixing; Optical pumping; Nonlinear optics; optical fiber communication; optical frequency conversion; optical-phase conjugation;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2004.840356
