Adaptive Multi-Layer Filters for Compensating for Impairments in Transmitters and Receivers for SDM Transmission

An extended adaptive multi-layer filter architecture that compensates for transmitter/receiver impairments in SDM transmission is presented. Simultaneous compensation and monitoring of receiver IQ skew was experimentally demonstrated for -10 to +10 ps in WDM/SDM transmission of 32-Gbaud PDM-64QAM signals over 102-km coupled 4-core fiber.

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