Posts about Coherent Transport

Very rarely does a technical advance promise late-night infomercial-type results. Even rarer does that advance rely on repositioning existing technology in a way that is even simpler and less expensive than its original use. That unlikely scenario may play out in the cable industry. CableLabs, the industry’s research and development consortium, is working to transition a long-haul transmission technology – coherent optics – for use in parts of the network far closer to end users ...
Read the full post
With more than 14,500 attendees, last week’s OFC is the biggest event on optical communications worldwide. The massive capacity needs of internet content providers (ICPs) stirred hot debates at the conference and on the show floor. In his plenary talk, Urs Hölzle highlighted that Google’s data center bandwidth is roughly doubling every year, posing serious scaling challenges to the network infrastructure ...
Read the full post

There’s been a lot of buzz around 4-Level Pulse Amplitude Modulation (PAM-4) in optical interconnect circles lately, and not without good reason. With the enterprise and metro carriers moving steadily toward 100Gbit/s connectivity, and already setting their sights on 400Gbit/s and beyond, the need to improve the ability of both the transmitter and receiver to handle large amounts of data is growing ...

Read the full post