Polarization modulation in wavelength division multiplexed...

Details Polarization modulation in wavelength division multiplexed... Polarization modulation in wavelength division multiplexed...

H - Electricity

04

J

H04J 14/02 (2006.01) H04B 10/135 (2006.01) H04J 14/06 (2006.01)

Patent

CA 2164352

Four-wave mixing between multiplexed channels in a wavelength division multiplexed optical transmission system, and the effects of polarization-dependent hole burning, are simultaneously reduced, in accordance with the invention, by a method and apparatus which provides for modulating a state-of-polarization of an optical signal so that an average value of the state-of-polarization over each modulation cycle issubstantially equal to zero; and, orienting a state-of-polarization of at least one channel of the optical signal to be substantially orthogonal to a state-of-polarization of at least one other channel of the optical signal while maintaining the substantially zero average value of the state-of-polarization of the optical signal over each modulation cycle.

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