Method and apparatus for providing high-order polarization mode dispersion compensation using temporal imaging
First Claim
1. A high-order polarization mode dispersion (PMD) compensation arrangement for receiving an optical input data signal comprising first and second polarization components for each bit of data that have been subjected to PMD, the PMD compensation arrangement comprising:
- a clock recovery arrangement for generating an electrical clock output control signal including a predetermined phase modulation depth and phase and a data rate of the received optical input data signal;
a phase modulator responsive to the optical input data signal received by the PMD compensation arrangement and the electrical clock output control signal from the clock recovery arrangement for generating an optical output signal wherein the phase of the first and second polarization components associated with each data bit are delayed by a predetermined amount; and
a dispersive unit for introducing a predetermined amount of dispersion to the first and second polarization components in the optical output signal from the phase modulator for generating an output optical signal from the PMD compensation arrangement wherein the first and second polarization components for each data bit are in phase.
7 Assignments
0 Petitions
Accused Products
Abstract
A high-order polarization mode dispersion (PMD) compensation arrangement compensates for PMD in an optical signal using a temporal imaging technique. An optical data input signal to the PMD compensator arrangement includes first and second polarization components for each bit of data that have been subjected to PMD. In the PMD compensation arrangement a clock recovery arrangement generates an electrical clock output control signal including a predetermined phase modulation depth and phase and a data rate of the received optical input data signal. A phase modulator is responsive to the optical input data signal and the electrical clock output control signal from the clock recovery arrangement for generating an optical output signal. In this optical output signal, the phase of the first and second polarization components associated with each data bit are delayed by a predetermined amount. A dispersive unit introduces a predetermined amount of dispersion to the first and second polarization components in the optical output signal from the phase modulator for generating an output optical signal from the PMD compensation arrangement wherein the first and second polarization components for each data bit are in phase.
-
Citations
22 Claims
-
1. A high-order polarization mode dispersion (PMD) compensation arrangement for receiving an optical input data signal comprising first and second polarization components for each bit of data that have been subjected to PMD, the PMD compensation arrangement comprising:
-
a clock recovery arrangement for generating an electrical clock output control signal including a predetermined phase modulation depth and phase and a data rate of the received optical input data signal; a phase modulator responsive to the optical input data signal received by the PMD compensation arrangement and the electrical clock output control signal from the clock recovery arrangement for generating an optical output signal wherein the phase of the first and second polarization components associated with each data bit are delayed by a predetermined amount; and a dispersive unit for introducing a predetermined amount of dispersion to the first and second polarization components in the optical output signal from the phase modulator for generating an output optical signal from the PMD compensation arrangement wherein the first and second polarization components for each data bit are in phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A high-order polarization mode dispersion (PMD) compensation arrangement for receiving an optical input data signal comprising first and second polarization components for each bit of data that have been subjected to polarization mode dispersion (PMD), the PMD compensation arrangement comprising:
-
a clock recovery arrangement for receiving the optical input data signal, and for generating therefrom an electrical clock output control signal comprising both a frequency corresponding to a bit data rate of the optical input data signal and a predetermined phase modulation depth and phase; a phase modulator for receiving the optical input data signal, and for modulating the phase thereof in accordance with the electrical clock output control signal from the clock recovery arrangement including a phase difference of 90 degrees from that of the optical input data signal, the phase modulator generating an optical output signal wherein the phase of the first and second polarization components associated with each data bit are delayed by a predetermined amount; and a dispersive unit for introducing a predetermined amount of dispersion to the first and second polarization components in the optical output signal from the phase modulator for generating an output optical signal from the PMD compensation arrangement wherein the first and second polarization components for each data bit are in phase. - View Dependent Claims (11, 12, 13, 14, 15)
-
-
16. A method of providing high-order polarization mode dispersion (PMD) compensation in an optical transmission system comprising the steps of:
-
(a) receiving an optical signal including first and second orthogonal principal states of polarization (PSPs) that have been subjected to polarization mode dispersion (PMD); (b) generating an electrical clock output control signal comprising both a frequency corresponding to a bit data rate of the optical input data signal and a predetermined phase modulation depth and phase in a clock recovery arrangement from the received optical input data signal; (c) modulating the phase of the optical input data signal received in step (a) in a phase modulator in accordance with the electrical clock output control signal generated in step (b) wherein said phase is a phase difference of 90 degrees from that of the optical input data signal, and generating an optical output signal wherein the phase of the first and second polarization components associated with each data bit are delayed by a predetermined amount; and (d) introducing a predetermined amount of dispersion to the first and second polarization components in the optical output signal from the phase modulator by a dispersive unit for generating an output optical signal from the PMD compensation arrangement wherein the first and second polarization components for each data bit are in phase. - View Dependent Claims (17, 18, 19, 20, 21, 22)
-
Specification