Demonstration of an LO-less, DSP-free QPSK Receiver for Data Center Interconnects

2019/07/17 by Kamran, Rashmi, Nambath, Nandakumar, Manikandan, Sarath +4
#FOS: Electrical engineering #Signal Processing (eess.SP) #electronic engineering #information engineering

paper · doi:10.48550/arxiv.1907.07478

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.

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