Patent ID: 6567577
Filing Date: 2003-05-20
Classification: G02B,H04B

Abstract:
A WDM optical communication system, comprising:a transmitter and a receiver; an optical fiber transmission path coupling said transmitter to said receiver, said transmission path including at least one repeater having an optical amplifier located therein; a dispersion compensator disposed at an intermediate point along said transmission path outside of said repeater, said compensator including: a wavelength routing device for dividing a signal having a prescribed bandwidth into a plurality of distinct sub-bands, each said sub-bands comprising a plurality of channels; a plurality of output paths for respectively receiving said plurality of distinct sub-bands; a dispersion compensating optical element coupled to each of said output paths, said dispersion compensating optical elements each substantially compensating for dispersion of said plurality of channels within said respective sub-bands at prescribed wavelengths within the bandpass of its respective sub-band; a coupler for recombining said distinct sub-bands and coupling said recombined distinct sub-bands onto said optical fiber transmission path.