Patent ID: 8849126
Filing Date: 2014-09-30
Classification: H04B

Abstract:
1. An electronic phase conjugation system associated with a communication system comprising: a fiber optic link disposed between a transmitter and a receiver, the fiber optic link supporting multi-rate optical channels including a high-speed express channel; an amplifying element coupled to the fiber optic link to improve power symmetry, the amplifying element compensating for impairment of an incoming high-order optical signal, the amplifying element supporting the multi-rate optical channels including the high-speed express channel; an electronic phase conjugation element implemented non-symmetrically at the fiber optic link, the electronic phase conjugation element compensating for impairment of the incoming high-order optical signal due to the fiber optic link, the electronic phase conjugation element comprising: an in-phase/quadrature modulator that generates a phase conjugated outgoing optical signal by modulating and shifting the phase of the final in-phase electrical signal and the final quadrature electrical signal to perform phase conjugation, the in-phase/quadrature modulator converting the final in-phase electrical signal and the final quadrature electrical signal into optical signals and combining the in-phase optical signal and the quadrature optical signal to generate the phase conjugated outgoing optical signal, thereby compensating for impairment of the incoming high-order optical signal and extending a system reach of the high-speed express channel.