Multistage dispersion compensator using ring resonators

A compact, multichannel dispersion-compensating filter is demonstrated with D = -4200 ps/nm, a +/-5-ps group delay ripple, <3-dB loss, and a 4.5-GHz p assband width out of a 12.5-GHz free spectral range. We show that multistag e designs can achieve a substantial increase ill passband width and peak di spersion for a given group-delay ripple compared with single-stage designs. The dispersion-compensation effectiveness was demonstrated in a 320-km, se ven-channel nonlinear system simulation for OC48 signals. (C) 1999 Optical Society of America.