Timing Jitter Induced by Intrachannel Interactions in Optical Fiber Communication Systems Using CFG as Dispersion Compensator

In this paper, a theoretical model is proposed for the analysis of timing jitter induced by intra-channel interactions in optical fiber communication systems using Chirped Fiber Grating (CFG) as dispersion compensator. And for the first time, the impact of Group-Delay Ripple (GDR) on timing jitter is taken into account in detail, theoretically and numerically. Results show that the GDR may increase or decrease the timing jitter of certain pair of adjacent pulses, deciding by the ripple parameters. The maximum influence will be obtained when ripple period is about 2/5 of the input pulse width. In practical systems, the GDR enhance the timing jitter for some adjacent pulses while reduce it for some other adjacent pulses, depending on the pulse pattern and the GDR parameters.