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.
@article{arxiv.1907.07478,
title = {Demonstration of an LO-less, DSP-free QPSK Receiver for Data Center Interconnects},
author = {Rashmi Kamran and Nandakumar Nambath and Sarath Manikandan and Rakesh Ashok and Nandish Bharat Thaker and Mehul Anghan and Shalabh Gupta},
journal= {arXiv preprint arXiv:1907.07478},
year = {2019}
}