Can Silicon Photonics Solve the Bandwidth Bottleneck in AI Data Centers?

Can Silicon Photonics Solve the Bandwidth Bottleneck in AI Data Centers?

Author: All About Circuits May 21, 2024 Duration: 51:55

Steve Klinger, Vice President of Product, joins the Moore's Lobby podcast to discuss how LightMatter is using silicon photonics to improve speed and reduce power consumption in AI data centers. With two previous $1B+ startups under his belt, Klinger knows a thing or two about identifying successful technology solutions to current industry challenges. While compute performance continues to grow rapidly, interconnect has not been able to keep pace. In this episode, Klinger explains how LightMatter's flagship product, Passage, creates a programmable optical fabric for the efficient interconnect of chiplets and other silicon ICs.

Klinger explains that they are trying to solve the problem of efficiently accessing all of the bandwidth on one chip and sharing it with another chip. If they can improve the interconnect bandwidth density, it will allow performance scaling to continue increasing at the workload level. Klinger emphasizes, "There are data centers with hundreds of millions of dollars of GPUs sitting idle, waiting for the network topology or the interconnects to catch up."

So, join our host, Daniel Bogdanoff, in this deep dive into silicon photonics with Klinger. In this discussion, they address many fascinating topics, including:

- What makes silicon photonics unique from traditional photonics?

- The common traits shared by Klinger's previous $1B+ startups.

- The many job openings available at LightMatter.


In the world of electronics, the real story is often found in the people who design, innovate, and push the boundaries of what's possible. Moore's Lobby: Where engineers talk all about circuits is a monthly podcast that goes beyond datasheets and schematics to explore the human element driving technological progress. Host Daniel Bogdanoff sits down with a diverse range of guests-from hands-on engineers and visionary technologists to the executives steering major organizations-for conversations that are as much about personal journey as technical achievement. Each episode delves into the practical engineering and the broader industry trends shaping our future, but always through the lens of the individual's experience. You'll hear firsthand accounts of breakthrough moments, the challenges of bringing complex ideas to life, and the philosophies that guide leaders in this demanding field. This podcast from All About Circuits connects a global community of professionals who share a deep curiosity for how things work and who makes them work. It’s a space for nuanced discussion that aims to inform, inspire, and provide genuine insight into the circuit-driven world we inhabit. The dialogue here is for those who appreciate the substance behind the innovation, offering a blend of technical depth and narrative that you can naturally integrate into your own perspective.
Author: Language: English Episodes: 100

Moore's Lobby: Where engineers talk all about circuits
Podcast Episodes
Sensors Insights: Bridging Hardware Collection and Software Analysis [not-audio_url] [/not-audio_url]

Duration: 56:31
The "old school" way was simple: a sensor sees a part, tells the controller, and the actuator moves. It was pure hardware logic, and it worked. But in today's smart factories, that's only half the story. Modern sensors a…
Powering EVs: Microgrids & DC Charging Solutions [not-audio_url] [/not-audio_url]

Duration: 41:25
In this episode of the Moore's Lobby podcast, we sit down with Antonio Di Vaira, Senior VP for Power Product of Schneider Electric to discuss the massive shifts happening in the world of energy distribution. The conversa…
Generative AI for Dirty Jobs—The Next Industrial Revolution? [not-audio_url] [/not-audio_url]

Duration: 54:05
Christopher Savoie, the founder and CEO of Zapata Computing, has had a fascinating career journey. After beginning as a young programmer working with early computers, he switched gears to immunology and biophysics in Jap…
GaN Powers Up in AI, Robotics, and Our Lives [not-audio_url] [/not-audio_url]

Duration: 51:41
In this fascinating interview, Alex Lidow discusses his early exposure to semiconductors through his father and grandfather, who founded International Rectifier. Initially pursuing aeronautical engineering at Caltech, he…