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Topic Title: rf to visible light
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Created On: 27 May 2012 12:02 PM
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 27 May 2012 12:02 PM
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ravali

Posts: 1
Joined: 27 May 2012

how can we convert radio signals to visible light?
if we can, will it be visible to us?
 29 May 2012 03:33 PM
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haguetim

Posts: 109
Joined: 25 April 2006

There are RF to fibre convertors available commercially operating up to (I think) 3GHz. Look up PPM Ltd, they make them.
 30 May 2012 12:21 PM
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ectophile

Posts: 540
Joined: 17 September 2001

I guess it means by "convert" and what you mean by "it".

By "convert" do you mean turn the radio energy into visible light, or just that an electronic instrument receives the radio signal and displays it in a visible form?

If it's the former, you will struggle to get a signal strong enough to light any lamp I can think of, but it may just be possible to light an LED with the right antenna and a really strong signal.

If it's the latter then most of us have such a device - it's called a television.

As for the second question, unless you clarify what you mean, then the obvious literal answer would have to be "yes" - if you can convert a radio signal to visible light, then it must be visible.

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S P Barker BSc PhD MIET
 04 June 2012 05:15 PM
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zerocred

Posts: 15
Joined: 06 December 2006

@ectophile
It could be high power UV laser light outside the normal visible band - in which case you can see it. Once with the right eye, and once with the left. The health and safety people might have something to say about testing it that way.
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