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The design of a polarization tracker and a PMDC for direct-detect RZ-DQPSK PDM systems is reviewed. The error signals are analyzed and their application spaces are identified. Experimental results are demonstrated to verify the designs.
The design of a polarization de-multiplexer and a polarization mode dispersion compensator (PMDC) for direct-detect polarization division multiplexed (PDM) return-to-zero differential quadrature phase shift keying (RZ-DQPSK) systems are studied in detail. The impact of polarization dependent loss is studied in polarization de-multiplexers with different error detection configurations for both bit-aligned...
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