Abstract
A phase-noise-cancelled coherent subcarrier fiber- optic communication system that uses integrated-optic Mach- Zehnder waveguide modulators for frequency-pair encoding is introduced. Optical double-sideband suppressed-carrier signals with the same random phase noise and information encoded in the frequency separation of the two sidebands are generated by properly biasing the modulator. Phase noise is eliminated at the receiver by a nodhear operation on the two sidebands. System performance analysis with numerid examples, taking into ac- count the modulation index and laser normalized linewidth, is presented.
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