[HN Gopher] Optical Frequency Combs
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       Optical Frequency Combs
        
       Author : zafka
       Score  : 45 points
       Date   : 2025-01-30 19:44 UTC (3 hours ago)
        
 (HTM) web link (www.nist.gov)
 (TXT) w3m dump (www.nist.gov)
        
       | high_priest wrote:
       | Nice to see some more posts about light communications on HN. I
       | have had the pleasure talking with people who developed this tech
       | & see it in action.
       | 
       | Apparently, it is a big step towards purely optical network
       | switching.
        
         | CamperBob2 wrote:
         | Once optical comb sources become economically available off the
         | shelf, they should be game-changers in several fields from
         | spectroscopy to time/frequency work. Right now everything you
         | can buy is still around 6 figures AFAIK.
        
       | lutherqueen wrote:
       | > seamlessly connected to optical waves that oscillate at 10,000
       | times higher frequencies
       | 
       | Somehow four orders of magnitude sound too less for the
       | transition from radio to light, but it makes sense. A i9
       | processor works at ~6 GHz, and light is at the THz range
        
         | AdamH12113 wrote:
         | Microwave communication goes comfortably into the tens of
         | gigahertz range, and visible light is in the hundreds of
         | terahertz. So it is about a factor of 10,000.
        
       | packetlost wrote:
       | I worked closely with some of these devices at a previous
       | employer. Might've even fried one at some point. I'm pretty
       | excited about what other things they can be used for!
        
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       (page generated 2025-01-30 23:00 UTC)