Gbit / s Electrically Adjustable Post - detection Filter

In the design of optical communication systems for multigigabit transmission rates, a special care must be given to the post-detection receiver filter. A well-designed post-detection filter, effecting appropriate pulse shaping/noise reduction, can reduce significantly the degradation caused by the system impairments. The received solitons occupy just a fraction of the bit period, a feature that decreases the decision circuit tolerant to the signal and timing jitter. It has also been shown that soliton interaction can be reduced significantly by an appropriate post-detection filter [1].