I seem to recall HP was touting some kind of optical link system back in the 
90's. (IIRC, it was omni-directional infrared.) I think they were suggesting it 
for sharing of a printer within a multi-computer office, or for linking test 
equipment into a lab's mini-computer.

While I can see some uses where a modulated light source, powerful yet 
inexpensive, would be a good data link, I can also see a few problems, the 
first of which is bi-directionality and the second is data capacity ahead of 
the optical links. As for his hints of vehicular applications, we still haven't 
eliminated rain, smoke and fog.

Call me cynical, but whenever somebody puts a box on stage and does magic 
engineering, I become skeptical. Whaddya mean, you don't want to get into the 

Altogether, Li-Fi is yet another path. Ubiquitous LED's make it more 
attractive, but not quite a standing ovation quality concept.

Ed Price
Chula Vista, CA USA

-----Original Message-----
From: Ralph McDiarmid [mailto:ralph.mcdiar...@schneider-electric.com]
Sent: Monday, December 11, 2017 8:21 AM
Subject: Re: [PSES] Li-Fi

I haven't studied it, but seems to me that one would need to modulate the light 
very quickly to get any sort of usable BAUD rate, unless you settle for 
transmission of text only.  (like the good old Bell 202 modems over voice band 
land lines)

Ralph McDiarmid

Product Compliance


Solar Business

Schneider Electric

-----Original Message-----

From: Amund Westin [mailto:am...@westin-emission.no]

Sent: Monday, December 11, 2017 12:51 AM


Subject: [PSES] Li-Fi

I came over this video ....


Anyone who have studied this tech?



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