Recurrent Optical Spectrum Slicers as multi-{\lambda} processors for WDM optical equalization of IM/DD channels

TL;DR

This paper introduces recurrent optical spectrum slicers as programmable multi-wavelength processors to improve WDM IM/DD optical communication systems, demonstrating simultaneous equalization of multiple high-speed channels over long distances.

Contribution

It presents a novel use of recurrent optical spectrum slicers as multi-wavelength processors with programmable photonics for dispersion compensation in IM/DD systems.

Findings

Successful equalization of three 64 Gb/s PAM-4 wavelengths after 75 km

High tolerance to wavelength grid variations

Demonstration of multi-wavelength processing in dispersion-impaired channels

Abstract

We report recurrent optical spectrum slicers as multi-wavelength optical processors in dispersion impaired IM/DD transmission systems with the use of programmable photonics. We demonstrate simultaneous equalization of three 64 Gb/s PAM-4 wavelengths after 75 km in the C-band and high tolerance to wavelength grid.