Single wavelength 480 Gb/s direct detection over 80km SSMF enabled by Stokes Vector Kramers Kronig transceiver

TL;DR

This paper introduces a novel Stokes-Vector Kramers-Kronig transceiver enabling 480 Gb/s data transmission over 80 km of SSMF using single wavelength direct detection, without a local oscillator, through advanced polarization and modulation techniques.

Contribution

It presents a new 4D modulation scheme with Stokes-Vector Kramers-Kronig detection that simplifies polarization de-rotation and achieves high data rates without a local oscillator.

Findings

Achieved 480 Gb/s data rate over 80 km SSMF

Demonstrated effective polarization de-rotation without LO

Optimized system parameters for high-performance transmission

Abstract

We propose 4D modulation with directed detection employing a novel Stokes-Vector Kramers-Kronig transceiver. It shows that employing Stokes vector receiver, transmitted digital carrier and Kramers-Kronig detection offers an effective way to de-rotate polarization multiplexed complex double side band signal without using a local oscillator at receiver. The impact of system parameters and configurations including carrier-to-signal-power ratio, guard band of the digital carrier, oversampling ratio and real MIMO is experimentally investigated. Finally, a record 480 Gb/s data rate over 80 km SSMF is achieved in a 60 Gbaud PDM-16QAM single carrier experiment with a BER below the threshold of 2.0x10-2