Work

Adaptive Coherent Receiver Settings for Optimum Channel Spacing in Gridless Optical Networks

Year: 2019

Type: article

Abstract: In this paper, we propose a novel circuit and system to optimize the spacing between optical channels in gridless (also called flexible-grid or elastic) networking. The method will exploit the beginning-of-life link margin by enabling the channel to operate in super-Nyquist dense wavelength division multiplexing mode. We present the work in the context of software-defined networking and high-speed optical flexible-rate transponders. The clock recovery scheme allows the mitigation of jitter by decoupling the contribution of high-jitter noise sources from the clock recovery loop. The method and associated algorithm are experimentally verified where a spectrum gain of up to 2 GHz in spacing between two channels in the Media Channel (MC) is obtained compared to conventional clocking strategies. We showed that the improvement is equivalent to increasing throughput, in a data-center interconnect scenario, by up to 300 giga-bits per second per route.

Source: Future Internet

DOI: 10.3390/fi11100206

Authors: Ahmad Abdo, Sadok Aouini, Bilal Riaz, Naim Ben-Hamida, Claude D’Amours

Institutions: University of Ottawa, Ciena (Canada)

Language: English

Topic: Advanced Optical Network Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $1,013