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Precise optical synchronization of high-speed electronics with microcombs

Project description

Precise, stable microcombs for data and signal synchronisation

Laser frequency combs are essential in precision technologies including optical clocks and timing synchronisation. Despite being highly accurate, they remain bulky and complex. Microcombs, which are smaller and chip-based, offer a promising alternative but currently lack the stability and performance of larger systems. Microresonator-based frequency combs (microcombs) offer a compact, chip-scale alternative but lack the stability and low phase noise of larger systems. The ERC-funded ProSync project will help overcome these limitations by developing high-performance, octave-spanning microcombs using innovative coupled microresonator designs. Researchers will integrate ultralow-loss silicon nitride with advanced materials to create efficient, scalable microcomb systems on a chip. More stable, accurate microcomb technology will benefit data centres and large-scale computing and global communication infrastructure.

Objective

Laser frequency combs based on mode-locked lasers are extraordinary photonic devices that have revolutionized precision frequency synthesis and metrology in the 21st century. They have enabled groundbreaking developments such as optical clocks, femtosecond-level timing synchronization, and ultra-pure microwave generation.

Microresonator-based frequency combs (microcombs) offer a transformative potential to reduce the complexity and size of traditional laser frequency combs. Recent advances in dissipative Kerr solitons have demonstrated the viability of these chip-scale devices, which can be manufactured at the wafer level through semiconductor processing techniques. However, microcombs still fall short in stability and phase noise compared to their non-integrated, mode-locked counterparts due to intrinsic scaling limitations when operating at the chip scale.

This proposal seeks to bridge this performance gap by developing high-performance, octave-spanning microcombs with photodetectable repetition rates using innovative arrangements of coupled microresonators. These advancements will enable single-point optical frequency division, whereby the comb’s degrees of freedom will be determined by an optical frequency reference. The project will explore 3D integration of ultralow-loss silicon nitride with advanced materials, aiming to create high-performance microcomb-based systems on a chip, and lay the foundation for novel optoelectronic synchronization architectures in datacenters.

These innovations address key challenges in energy consumption and capacity scaling in datacenters and large scaling computing architectures, paving the way for future advancements in global communication infrastructure.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

(opens in new window) ERC-2024-ADG

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Host institution

CHALMERS TEKNISKA HOGSKOLA AKTIEBOLAG
Net EU contribution
€ 3 499 696,00
Address
-
412 96 Goteborg
Sweden
Region
Södra Sverige Västsverige Västra Götalands län
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data

Beneficiaries (1)