Title :
Modified duobinary polarization-shift keying transmission scheme
Author :
Gené, Joan M. ; Soler, Marçal ; Comellas, Jaume ; Prat, Josep
Author_Institution :
Dept. of Signal Theor. & Commun., Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
A new version of duobinary polarization-shift keying scheme is proposed. The relocation of the duobinary filter at the receiver side and the optimization of both transmitter and receiver electrical filters offer a receiver sensitivity improvement while maintaining chromatic dispersion tolerance. The main reason for this sensitivity enhancement is the reduction of the timing jitter and the noise narrow filtering provided. Moreover, the system is more tolerant against fiber nonlinear effects.
Keywords :
amplitude shift keying; optical fibre communication; optical fibre dispersion; optical fibre polarisation; phase shift keying; self-phase modulation; timing jitter; wavelength division multiplexing; Bessel filters; chromatic dispersion tolerance; dense wavelength-division-multiplexing systems; duobinary filter; duobinary polarization-shift keying; eye diagram opening; fiber nonlinear effects; modified keying scheme; noise narrow filtering; polarization modulation; polarization-mode dispersion; push-pull Mach-Zehnder amplitude modulator; receiver sensitivity improvement; self-phase modulation; spectral efficiency; timing jitter; Chromatic dispersion; Fiber nonlinear optics; Optical fiber polarization; Optical filters; Optical modulation; Optical receivers; Optical sensors; Optical transmitters; Polarization shift keying; Timing jitter;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.818912
