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Demonstration of an LO-less, DSP-free QPSK Receiver for Data Center Interconnects (1907.07478v1)
Published 17 Jul 2019 in eess.SP
Abstract: We present the first demonstration of a local oscillator (LO)-less digital signal processing (DSP)-free coherent receiver for high-capacity short distance optical links. Experimental results with an analog domain constant modulous algorithm (CMA)-based equalizer chip for the self-homodyne quadrature phase shift keying (SH-QPSK) system validate the employability of an all-analog and LO-less receiver for low-power interconnects.