Graphene-Based Integrated Photonics For Next-Generation Datacom And Telecom

TL;DR

Graphene-based integrated photonics offers promising advantages for next-generation datacom and telecom applications, including ultrahigh bandwidth density and low power consumption, by leveraging graphene's unique optoelectronic properties.

Contribution

This paper presents a comprehensive vision, review, and roadmap for graphene-based integrated photonics, highlighting its potential to revolutionize datacom and telecom technologies.

Findings

Graphene enables electro-absorption and electro-refraction modulation with significant index change.

Graphene-based devices can eliminate thermal detuning dissipation in microresonators.

Potential for ultrahigh spatial bandwidth density and low power consumption in optical communications.

Abstract

Graphene is an ideal material for optoelectronic applications. Its photonic properties give several advantages and complementarities over Si photonics. For example, graphene enables both electro-absorption and electro-refraction modulation with an electro-optical index change exceeding 10$^{-3}$. It can be used for optical add-drop multiplexing with voltage control, eliminating the current dissipation used for the thermal detuning of microresonators, and for thermoelectric-based ultrafast optical detectors that generate a voltage without transimpedance amplifiers. Here, we present our vision for grapheme-based integrated photonics. We review graphene-based transceivers and compare them with existing technologies. Strategies for improving power consumption, manufacturability and wafer-scale integration are addressed. We outline a roadmap of the technological requirements to meet the demands of the datacom and telecom markets. We show that graphene based integrated photonics could enable ultrahigh spatial bandwidth density , low power consumption for board connectivity and connectivity between data centres, access networks and metropolitan, core, regional and long-haul optical communications.