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Have you ever wondered why pluggable optics exist? Have you ever wondered what acronyms like QSFP, LR4, FEC, and PAM4 actually mean? In this first episode I start a 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. \nThis is the first part of a four-episode conversation with Ray. In this episode we start at the beginning, with GBIC and SFP. He also talks about why pluggables were needed when they started and a whole bunch more. \n- Pat Chou, Cisco Optics Product Manager\n\nRay 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.\n\nAdditional resources\nCisco Optics blogs: https://blogs.cisco.com/tag/ciscoopticsblog (subscribe at https://feedburner.google.com/fb/a/mailverify?uri=CiscoOpticsBlog )\nCisco Optics YouTube playlist: http://cs.co/9008BlQen\nCisco Optics landing page: cisco.com/go/optics\n\nTimestamps\n3:48 How did pluggable optics start\n6:34 The problem with early non-pluggables\n8:56 Pay as you grow model\n11:00 What is SERDES\n12:48 What happens when your data center grows\n\nMusic credits\nSunny Morning by FSM Team | https://www.free-stock-music.com/artist.fsm-team.html\nUpbeat by Mixaund | https://mixaund.bandcamp.com