+44 (0)24 7671 8970
More publications     •     Advertise with us     •     Contact us
 
Loading...
News Article

Imec demonstrates compact 32-channel silicon-based wavelength filter

News

In a top-scored paper at the OFC Conference (San Diego), imec, a world-leading research and innovation hub in nanoelectronics and digital technologies, is presenting a major advancement in silicon-based wavelength-division multiplexing (WDM) capability. A compact 32-channel silicon-based wavelength filter is demonstrated for the first time with low loss and high tuning efficiency, enabling a 4x increase in the number of transmitted and received wavelength channels compared to today’s commercial transceivers. The demonstrated capability will enable continued scaling of the bandwidth density and power efficiency of next-generation silicon-photonics-based transceivers, addressing the requirements for short-reach optical interconnects in high-performance AI/ML compute clusters.

Continued scaling of optical interconnects is essential for achieving further performance and efficiency gains in AI/ML compute clusters.
Silicon photonics is a key technology platform for cost-effective integration of Tbps-scale transceivers, but the demanding requirements for bandwidth density, power efficiency, and latency in AI/ML system interconnects require substantial improvements at the process, device, and circuit level. For example, scaling up link bandwidth by adding more wavelength channels is typically associated with significant optical losses and excessive tuning power when using silicon-integrated components.

By combining the advanced Si patterning capability in imec’s 300mm Silicon Photonics platform (iSiPP300) with innovative and highly optimized designs of Si ring resonator and interleaver components, imec has overcome these challenges, realizing a WDM filter with 32 wavelengths at 100GHz channel spacing in the O-band, matching the specifications of the CW-WDM multi-source agreement (MSA). Owing to the careful design optimization, low optical insertion losses of about 2dB and crosstalk levels better than 16dB are maintained, even at this high channel count. By leveraging imec’s local Si substrate undercut process and optimized heater designs, the thermo-optic tuning efficiency is among the best-reported values at 290GHz/mW.

Joris Van Campenhout, fellow and R&D program director at imec: “Imec’s optical I/O R&D program aims at disruptive scaling of both bandwidth density and power consumption of silicon-integrated optical interconnects, which often present conflicting requirements. Our new 32-channel WDM filter enables Tbps-scale aggregate bandwidth per optical fiber using individual lane rates of only 32Gbps, enabling error-free link operation without power-hungry digital signal processing.
Leveraging its compact footprint, low optical losses, and high wavelength tuning efficiency, the demonstrated WDM filter opens a pathway to Tbps/mm-scale optical interconnects with overall power efficiencies of just 1pJ/bit.”

photonixFAB Consortium now open for first prototyping
Roadmap to drive PIC industry forward unveiled
European quantum experts team up on photonic quantum computing
OpenLight Partners with VLC Photonics to Expand Design and Test Capacity
Quintessent announces $11.5 million in Seed funding
EU leaders showcase quantum technology ambitions after signing landmark pact
Imec demonstrates compact 32-channel silicon-based wavelength filter
Broadcom delivers 51.2T co-packaged optics Ethernet switch
Vanguard Automation signs Agreement to join the Swedish High-Tech Group Mycronic
TRUMPF and Optomind showcases 100Gbps VCSEL performance in 800Gbps transceiver at OFC
Infinera announces new line of 1.6T optics for intra-datacentre connectivity
Infinera to Showcase Advances in Optical Networking Solutions at OFC 2024
New etching technique for combining electronics and photonics
EFFECT Photonics Secures $38 Million Series D Funding
Broadcom to demonstrate expanded portfolio at OFC 2024
Celestial AI to exhibit “Photonic Fabric” optical interconnect platform at OFC
Keysight to showcase technologies to accelerate AI at OFC 2024
NTT launches NTT Innovative Devices to advance photonic-electronic convergence hardware
Nubis Communications product receives highest score from Lightwave Innovation Reviews
UK joins EU’s Chips Joint Undertaking programme
Sarcura secures €1.7 million grant from Austrian Research Promotion Agency
The best of both worlds: Design freedom and IP protection
Extremely high-power transmitters for access networks
Tuneable lasers: The elusive trifecta
Three ways photonics can catalyse hardware evolution for datacoms
Lumentum expands Caswell fab, reflecting company-wide plans for growth
Supporting AI with new optical modulators
Moving towards polarisation-independent monolithic PICs
Getting the full PICture: Testing microring resonators with sub-picometre spectral resolution
Lessengers announces portfolio of 800G optics for AI/ML
PhotonDelta and Optics Netherlands launch new “MasterPlus” programme
Marvell CTO receives David Richardson Medal from Optica

×
Search the news archive

To close this popup you can press escape or click the close icon.
Logo
×
Logo
×
Register - Step 1

You may choose to subscribe to the PIC Magazine, the PIC Newsletter, or both. You may also request additional information if required, before submitting your application.


Please subscribe me to:

 

You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in: