From Apple to OpenLight: Silicon Photonics and Integrated Lasers with Dr. Tom Mader

Moore's Lobby: Where engineers talk all about circuits

I’ll bet that you didn’t know that the original concept for what became the Apple Thunderbolt interface involved optical communication. Well, in this fascinating podcast with Dr. Mader, you will learn that intriguing backstory and much more.

Mader also provides a helpful introduction to silicon photonics technology and applications. Importantly, OpenLight’s business model is designed to allow them to become an Arm-like IP provider for silicon photonics. “We’re the first open siliconics platform that has the lasers and amplifiers integrated on the chip,” explains Mader.

With the OpenLight Process Design Kit (PDK), customers can integrate InP lasers and amplifiers directly into their silicon IC designs at Tower Semiconductor. While the silicon can be employed to guide, modulate, and detect light, you need the InP to amplify. OpenLight literally brings the silicon and the InP together with molecular bonding.

While silicon photonic is already making inroads in a number of important applications, Mader is “excited about the long tail of applications” enabled by OpenLight and their customers.

In addition, Mader recounts his rich technology background that includes developing a patent while interning at Apple, being involved in an early Amazon commercial product, directing engineering at a startup that was inquired by Intel, and his family connections to the legendary Fairchild Semiconductor and our podcast’s name inspiration, Gordon Moore.

So, listen in for other interesting tidbits from this discussion with Mader, including these technical insights:

-A clear description of a silicon photonics system -What makes a quality integrated laser? -How amplitude modulation (AM) and phase modulation (PM) are employed is laser systems