Optical dispersion compensation
First Claim
Patent Images
1. A method comprising:
- computing an amount of dispersion contributed by a first span of an optical network for at least one channel of a multi-channel optical signal;
accumulating the amount of dispersion into a prior accumulated dispersion, if the at least one channel is terminated prior to compensation;
providing a dispersion signal representing a sum of the prior accumulated dispersion and a dispersion of a current span of the optical network; and
controlling a dispersion compensator in accordance with the dispersion signal to optically compensate for the total dispersion of the optical signal, wherein the dispersion compensator comprises a plurality of cascaded single channel compensators.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of providing dispersion compensation includes providing a dispersion signal indicative of an amount of dispersion for at least one channel of a multi-channel optical signal. A dispersion compensator is controlled in accordance with the dispersion signal to optically compensate for the dispersion of the optical signal.
38 Citations
20 Claims
-
1. A method comprising:
-
computing an amount of dispersion contributed by a first span of an optical network for at least one channel of a multi-channel optical signal; accumulating the amount of dispersion into a prior accumulated dispersion, if the at least one channel is terminated prior to compensation; providing a dispersion signal representing a sum of the prior accumulated dispersion and a dispersion of a current span of the optical network; and controlling a dispersion compensator in accordance with the dispersion signal to optically compensate for the total dispersion of the optical signal, wherein the dispersion compensator comprises a plurality of cascaded single channel compensators. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An apparatus comprising:
-
a dispersion calculator providing an amount of dispersion associated with at least one channel of a multi-channel optical signal carried by a first span of an optical network, the dispersion calculator accumulating the amount of dispersion into a prior accumulated dispersion, if the at least one channel is terminated prior to compensation;
wherein the dispersion calculator provides an accumulated dispersion signal representing a sum of the prior accumulated dispersion and a dispersion of a current span of the optical network; anda compensator controlled in accordance with the accumulated dispersion signal to optically compensate for total dispersion of the multi-channel optical signal, wherein the dispersion compensator comprises a plurality of cascaded single channel compensators. - View Dependent Claims (13, 14, 15)
-
-
16. A method comprising:
-
computing an amount of dispersion on a first channel carried by a first span of an optical network; accumulating the amount of dispersion into a prior accumulated dispersion, if the first channel is terminated prior to compensation, wherein the prior accumulated dispersion is embedded into the first channel of a second span of the optical network; providing a dispersion signal representing a sum of the prior accumulated dispersion and a dispersion of a current span; and controlling a dispersion compensator in accordance with the dispersion signal to optically compensate for total dispersion of the optical signal carried by the current span, wherein the dispersion compensator comprises a plurality of cascaded single channel compensators. - View Dependent Claims (17)
-
-
18. An apparatus comprising:
-
a plurality of spans; a plurality of network elements coupling the spans to form an optical communication network, wherein at least one network element incorporates; a dispersion calculator providing an amount of dispersion associated with at least one channel of a multi-channel optical signal communicated on a current span terminated by the at least one network element, wherein the dispersion calculator provides a dispersion signal corresponding to an accumulated dispersion between a selected span and the at least one network element; and a compensator controlled in accordance with the dispersion signal to optically compensate for accumulated dispersion of the optical signal, wherein the compensator comprises a plurality of cascaded single channel compensators. - View Dependent Claims (19, 20)
-
Specification