Abstract

Coherent technology supporting higher order modulation formats is indispensable for fulfilling the ever-increasing need for higher capacity. However, coherent receivers require heavy digital signal processing (DSP) which increases the power envelope of coherent puggables well above the Intensity Modulation and Direct Detection (IM/DD) counterparts. Although self-coherent or phase retrieval methods have gained significant attention, they still lack in efficiency and suffer from multiple drawbacks in comparison with the standard coherent receiver. Here, we propose and numerically simulate a neuromorphic receiver based on recurrent optical spectrum slicing (ROSS) for detection and equalization of coherent modulation formats, utilizing minimal DSP and low bandwidth components. Through spectral slicing, the receiver can support up to 800 Gb/s/λ net data rate in single polarization configuration for short reach scenarios.

100 Gb/s PAM4 transmission system for datacenter interconnects using a SiP ME-MZM based DAC-less transmitter and a VSB self-coherent receiver

Zhenping Xing, Alireza Samani, Meng Xiang, Eslam El-Fiky, Thang M. Hoang, David Patel, Rui Li, Meng Qiu, Md. Ghulam Saber, Mohamed Morsy-Osman, and David V. Plant
Opt. Express 26(18) 23969-23979 (2018)

A self-coherent receiver for detection of
PolMUX coherent signals

Jingshi Li, Rene Schmogrow, David Hillerkuss, Philipp C. Schindler, Moshe Nazarathy, Carsten Schmidt-Langhorst, Shalva-Ben Ezra, Igor Tselniker, Christian Koos, Wolfgang Freude, and Juerg Leuthold
Opt. Express 20(19) 21413-21433 (2012)

Experimental demonstration of low-complexity fiber chromatic dispersion mitigation for reduced guard-interval OFDM coherent optical communication systems based on digital spectrum sub-band multiplexing

Mahdi Malekiha, Igor Tselniker, Moshe Nazarathy, Alex Tolmachev, and David V. Plant
Opt. Express 23(20) 25608-25619 (2015)

Robust Architecture for Autonomous Coherent Optical Receivers

Pierre Isautier, Kedar Mehta, Andrew J. Stark, and Stephen E. Ralph
J. Opt. Commun. Netw. 7(9) 864-874 (2015)

DSP-free ‘coherent-lite’ transceiver for next generation single wavelength optical intra-datacenter interconnects

Mohamed Morsy-Osman, Mohammed Sowailem, Eslam El-Fiky, Tristan Goodwill, Thang Hoang, Stephane Lessard, and David V. Plant
Opt. Express 26(7) 8890-8903 (2018)