1 April 2025

High Power DFB laser AI/ML interconnects

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Following the keynote speech given two week ago by NVIDIA’s CEO, Jensen Huang at last GTC forum in San Francisco where he announced for the first time a coming wide deployment of Silicon Photonics based optical interconnects, a thematic workshop called “High Power and Multi-Wavelength Laser Light Sources: How Can They Address the Needs of AI/ML Interconnects?” was held on March 30 at OFC.

The event was dedicated to technologies that can provide efficient optical connectivity in artificial intelligence and high-performance computing, particularly in the context of optical input/output (OIO) and co-packet optics (CPO).

One of the key issues addressed was the need for a reliable and scalable optical power source — one that can support multiple ports and wavelengths, deliver multi-watt output, and meet the reliability standards of the semiconductor industry.
The following topics have been discussed during the workshop:

  • What are the key advantages and disadvantages of DFB laser/laser array based, Kerr and electro-optic comb based, mode-locked laser based, and other approaches to multi-wavelength sources, in the short and long term?
  • How to address the challenges of achieving higher power/multi-wavelength without compromising performance, complexity, and reliability?
  • Is SOA integration a viable approach to increasing power and does it justify the added noise and complexity?
  • Are integrated and remote light sources both viable options for OIO and CPO in terms of power, efficiency, reliability?

Large companies, mid-size companies like Innolume and startups were presented by remarkable speakers:

  • Milind Gokhale, Casela Technologies, United States
  • Daisuke Inoue, Sumitomo, Japan
  • John Johnson, Broadcom, United States
  • Richard Jones, Intel Corporation (IPS), United States
  • Alexey Kovsh, Innolume Germany
  • Mike Larson, Lumentum, United States
  • Alan Liu, Quintessent, United States
  • Sylvie Menezo, SCINTIL Photonics, France
  • Yoshi Okawachi, Xscape Photonics, United States
  • Radek Roucka, Ayar Labs, United States
  • Suresh Venkatesan, POET Technologies, Canada

https://www.ofcconference.org/en-us/home/program-speakers/workshops/high-power-and-multi-wavelength/ 

Alexey Kovsh presented a world record power of our DFB lasers

Alexey Kovsh presented a world record power of our DFB lasers based on InAs/GaAs QDs which can operate in uncooled regime up to 100°C with PCE of 20% at 85°C, eliminating the need of TEC for External Light Source (ELS) for Co-Packaged Optics platform. This is exactly what industry needs, since till now High Power QW based DFB laser require to use TECs, leading to higher energy consumption of ELS and lower system reliability. 

DFB lasers based on InAs/GaAs which can operate in uncooled regime up to 100°C with PCE of 20% at 85°C

We would like to remind you that our team will be waiting for visitors at booth #4909 during the exhibition on April 1-3, 2025

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