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Cisco Optics Podcast Ep67: The Hidden Intelligence Inside Every Ethernet Link - John Calvin, Part 4 of 8

October 6, 2026 · 15 min

Show notes

In the pluggable optics industry every next generation is led by countless presentations and proposals at standards bodies meetings along with lots of lab development and testing behind the scenes. Right now the industry has its sights set on 3.2 terabit transceivers with 400 Gb per electrical lane. All those meetings and all that testing are happening as we speak.

Today I am joined by John Calvin, Strategic Planner and Datacom Technology Lead at Keysight.

John has been bridging the measurement science gaps of emerging telecom and datacom development efforts for 20 years. He has chaired multiple physical layer interoperability working groups and is currently serving as a contributing member to IEEE 802.3, OIF-CEI, InfiniBand, and PCIe development efforts. John holds a BSEE from Washington State University, and his graduate level studies are in signal processing from Stanford University.

In Episode 67 we continue our conversation with John. We get into how equalization, forward error correction, and increasingly sophisticated signaling keep Ethernet scaling.

John has very generously made himself available for your follow-up questions. You can find him at IEEE 802.3 technical forums or you can email him at [email protected].

Please follow the Cisco Podcast Network on Spotify or Apple Podcasts! Better yet, leave a review on Apple podcasts. Remember you're listening to the Cisco Optics Podcast, which is part of the Cisco Podcast Network where you can find other great Cisco podcasts too.

If you want to listen on a website, go to optics.podcastpage.io.

We also have educational videos on youtube. Just go to youtube.com and search on Cisco Optics.

Related links
Cisco Optics-to-Device Compatibility Matrix: https://tmgmatrix.cisco.com/
Cisco Optics-to-Optics Interoperability Matrix: https://tmgmatrix.cisco.com/iop
Cisco Optics Product Information: https://copi.cisco.com/

Additional resources
Cisco Optics Podcast: https://optics.podcastpage.io/
Blog: https://blogs.cisco.com/tag/ciscoopticsblog
Cisco Optics YouTube playlist: http://cs.co/9008BlQen
Cisco Optics landing page: cisco.com/go/optics

Intro music
Music by Sergio Prosvirini from Pixabay

Outro music
Dreamers by Mixaund | https://mixaund.bandcamp.com
Royalty Free Music by https://www.free-stock-music.com

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