Title :
Impact of group-delay ripple in transmission systems including phase-modulated formats
Author :
Liu, Xiang ; Mollenauer, Linn F. ; Wei, Xing
Author_Institution :
Lucent Technol., Bell Labs., Holmdel, NJ, USA
Abstract :
We derive an analytic expression for the signal distortion that results from the effects of group-delay ripple (GDR). When reduced to its simplified first-order form, our expression provides a clear physical picture of how the signal is affected by the ripple period, magnitude, and how the mean signal frequency is located with respect to the ripple peaks. We also find the optical signal-to-noise ratio penalty associated with the ripple to be dependent on the phase relationship among the signal bits. Particular analysis on the impact of GDR in differential phase-shift keying transmission is presented.
Keywords :
differential phase shift keying; intersymbol interference; optical fibre communication; optical fibre dispersion; optical fibre filters; wavelength division multiplexing; differential phase-shift keying; dispersion compensation; dispersive element; eye-closure penalty; group-delay ripple; high-speed optical communication; intersymbol interference; optical signal-to-noise ratio penalty; phase-modulated formats; phasor diagrams; ripple magnitude; ripple period; signal distortion; simplified first-order form; Delay; Differential phase shift keying; Differential quadrature phase shift keying; Frequency; Optical distortion; Optical fiber communication; Optical filters; Phase distortion; Signal analysis; Signal to noise ratio;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.819368
