free space optical communication
free space optical communication
(OP)
Hi guys,
I want to ask anyone if you know about free space optical communication. Can you give me some insight about this technology. Whether it is accepted nowadays and used in any country?
I want to ask anyone if you know about free space optical communication. Can you give me some insight about this technology. Whether it is accepted nowadays and used in any country?





RE: free space optical communication
http://optics.org/news/1/4/21
Mid-1970s I sent audio across the classroom using an LED, reflector, phototransistor and a telescope.
One would think that it should be in more common use. But it practice it's unreliable because (for example) a passing bird can obviously block a laser beam or small sensor.
Off-hand I can't think of any wide spread applications.
RE: free space optical communication
TTFN
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RE: free space optical communication
It was also considerably more expensive than other technologies that became usable if you had any way to put a cable or fiber pair under the street.
Mike Halloran
Pembroke Pines, FL, USA
RE: free space optical communication
Cheers
Greg Locock
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RE: free space optical communication
RE: free space optical communication
RE: free space optical communication
Probably to minimize interference. It used to be that a single remote was about all you had, but now, there are remotes EVERYWHERE. The other problem is battery life; dimming the transmission probably substantially increases the battery life.
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: free space optical communication
RE: free space optical communication
So how about nowadays? Is it still being used or implement for telecommunication? Can I know at which country it is being used?
RE: free space optical communication
Mike Halloran
Pembroke Pines, FL, USA