Episode 3 of the Cisco Optics Podcast is now posted! See below for episode notes. And check out Ray’s video on 400G migration.

Cisco Optics Podcast Episode 3

How did we go from 1G to 400G? The history of pluggable optics, a conversation with Ray Nering, part 3 of 4.

Have you ever wondered why pluggable optics exist? Have you ever wondered what acronyms like QSFP, LR4, FEC, and PAM4 actually mean? In this episode I continue my conversation with my colleague Ray Nering.

He explains to me how a lot of these came to be, starting from the days of 1Gb GBIC all the way up to today’s 400Gb QSFP-DD. This is the third part of a four-episode conversation with Ray. In this episode we get into 100Gb pluggables and then the QSFP-DD form factor.
– Pat Chou, Cisco Optics Product Manager

Ray Nering is a colleague of mine in the Cisco Optics product management group and over the years has held senior management positions at other companies in the optics space, such as AT&T Microelectronics, Lucent, JDSU, Agere, Optium, and Lightwire.

Listen to Episode 3

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02:06 4x bandwidth at 2.5x cost
06:25 Enter 100G modules
12:33 QSFP28 ramps in 2016
17:56 QSFP-DD form factor considerations

Music credits

Sunny Morning by FSM Team
Upbeat by Mixaund


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Cisco Optics Web Page


Pat Chou

Product Manager

Service Provider - Transceiver Modules Group