5 ms·

> 1024Gbps Good luck getting a 1Tbit tranceiver. Anydirectional. Also it's 512Gbitish per direction.

• jmyeet 6mo ago
  Bidirectional is a lot like biweekly. Biweekly depending on context means twice a week or once every two weeks and bidirectional can both mean per direction and total of both directions. But yes I meant 512Gbps each way, to be clear.
  • fc417fc802 6mo ago
    I'm only a single datapoint but I've never encountered that usage. My understanding of a bidirectional link is that it meets the same spec in both directions simultaneously. It's important precisely because many links aren't bidirectional, sharing a single physical link between two logical links.
    • dcrazy 6mo ago
      The more precise terms are full-duplex and half-duplex.
• za_creature 6mo ago
  The video is about a 2x1 link, which the author hopes to eventually scale up to 3x4 using 40 gig transceivers. I'd say thunderbolt is probably safe in the near future.
• throwaway270925 6mo ago
  Easy, fs.com has 1.6Tbps OSFP for about 570€ - though only up to 1m lenght apparently.
  • jmyeet 6mo ago
    I was looking into the highest bandwidth optical transceivers. 400Gbps were easy enough to find so thanks for posting this. I honestly didn't know there were 1.6Tbps transceivers like this. One note: I believe the SMF max fiber length is 2km not 1m [1]. The data sheet [2] also says: > - 2000m max on single mode fiber [1]: https://www.vitextech.com/products/1-6t-osfp-2fr4 https://www.vitextech.com/products/1-6t-osfp-2fr4 [2]: https://resource.fs.com/mall/resource/cn_osfp-2fr4-16t-data-sheet-20251215182215.pdf https://resource.fs.com/mall/resource/cn_osfp-2fr4-16t-data-...
• jauntywundrkind 6mo ago
  That's 64Gb per lane across x16 lanes. That sounds not daunting? There's already 800Gb transceivers readily available, 1.6 is probably getting preview deploys to some hyperscalers & other early adopters as we speak.