5 ms·

Super cool -- one challenge will be that in order to live on the hot processors of today, these emitters will need to still work at around 400K -- the good news

by xt00 7y ago

Super cool -- one challenge will be that in order to live on the hot processors of today, these emitters will need to still work at around 400K -- the good news is that these appear to still work well at around 300K -- but it sounds like these go to nearly no bandgap at higher temperatures and shift into the infrafred. But yea, pretty awesome stuff..

01100011 7y ago
Wouldn't infrared be acceptable for data transmission?
- GordonS 7y ago
  Not sure how applicable it is, but the IrDA (Infrared Data Association) protocol tops out at only 16Mbps.
  - layoutIfNeeded 7y ago
    False. >GigaIR: 512 Mbit/s – 1 Gbit/s, NRZI, 2-ASK, 4-ASK, 8b/10b https://en.wikipedia.org/wiki/Infrared_Data_Association https://en.wikipedia.org/wiki/Infrared_Data_Association
    - GordonS 7y ago
      OK, I wasn't aware of these newer specs, it certainly used to be much more limited.
    - fulafel 7y ago
      GigaIR seems to be vapourware from 2008 that died since.
  - raverbashing 7y ago
    That's like asking the GoKart association how fast you can take a Formula 1 car ;) IrDA has its uses but it seems they don't deal with fiber comms.
  - mcnamaratw 7y ago
    It's not applicable. 40Gbps over fiber is ordinary. 40Gbps per wavelength, not per fiber. Many times 40Gbps over one fiber.
    - topranks 7y ago
      Who does 40Gbps per wavelength? 10/25/50/100 are the common rates in real-world Ethernet PHY standards.
      - mcnamaratw 7y ago
        Telecom uses 40G.
  - deleted 7y ago
    [deleted]
- rootsofallevil 7y ago
  it depends how infrared (from memory) Current fibers have a dispersion minimum ~1300 nm and an attenuation minimum ~ 1550 nm
- fsh 7y ago
  Basically all fiber data transmission is done in the near-IR between 800 and 1600 nm.