Can you provide the schematic diagram.
Are you trying to send light from a standard LED to an optical fiber and then use a standard photo-diode to pick it up ?
Or do you use devices that are designed to work with optical fiber ..
I think this is one of several threads about an optical parametric amplifier.
https://www.edaboard.com/threads/190917/
https://www.edaboard.com/threads/190992/
https://www.edaboard.com/threads/190831/
https://www.edaboard.com/threads/190809/
I am not sure it is going anywhere.
@other-side-of-d-moon - do you think you really understand what an optical parametric amplifier is, how it is constructed and how it works? Until you do, I think you will get nowhere.
Keith.
Dave,
Yes, it does seem that the forum sometimes looks like a "... type your homework question here ..." site. Still there are also a large number of people who try first and post here when they are stuck who deserve help.
Keith.
At least, he's giving the impression. Personally, I was confused by the schematic with a title "parametric amplifier" but without an optical amplifier in the signal path.he appears to be taking on a project that is way out of his depth of understanding
At least, he's giving the impression. Personally, I was confused by the schematic with a title "parametric amplifier" but without an optical amplifier in the signal path.
Technically, there is mainly a misunderstanding or an unsuitable usage of terms, I guess. Interestingly, the thread "circuit design of ppa", that has the only meaningful schematic among various others presented in the discussion, shows an electrical parametric amplifier. Apparently, that's what's the original poster is chasing for.
I'm not an expert in this field, but the term optical parametric amplifier (OPA) is clearly reserved for optical amplifiers (using non-linear crystals). The term photo (or photonic) parametric amplifier (PPA) isn't commonly used at all. But the said diagram understands it as an electrical system (without telling about the design details). The specific property, in addition to a basic parametric amplifier, is the fact, that the pump carrier frequency is also fed through optical path.
P.S.: Reviewing the above linked "PPA" schematic, I must add, that it's far from being clear. But it gives at least an idea of the intended function. To understand the context, we should also know the origin of the drawing.
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