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Over the past few years, we've been working to upgrade our data centers to run at 100 gigabits per second. To do so, we needed to deploy 100G optical connections to connect the switch fabric at higher data rates and allow for future upgradability — all while keeping power consumption low and increasing efficiency. We created a 100G single-mode optical transceiver solution, and we're sharing it through the Open Compute Project. A detailed specification, CWDM4-OCP, was contributed to OCP, and more information on the CWDM4-OCP design guide can be found here. In this post, we'll provide a behind-the-scenes look at the optical transceiver solution in our data centers.

Designing 100G optical connections | Engineering Blog | Facebook Code

Just gathering some useful links and info here.

Here is a video about Facebook and its choices in 100G vendors