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March 16th, 2015, 03:18 AM   #1
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A=10 times log(Pin/Pout)?

Good day, I am not sure if logs belong here. Please excuse. In photonics, I am not sure what this means. A and P? Amps, Photons, Decibels?

A = 10 times log(Pin/Pout)

It is physics and maths, in relation to light and optic fibres and maybe attenuation.

What is the eqauation for?
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March 16th, 2015, 03:31 AM   #2
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I don't know the answer to this, but a quick search of this equation in Google yielded some search results applicable to describing power output in decibels. See for example:

http://www.wirelessapplications.com/...conv_Final.pdf

I'm not sure why you would ever want to use this equation for photonics. Perhaps you have a microphone in your set-up that is converting sound to electrical signals to photons in an optic fibre?
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March 16th, 2015, 03:37 AM   #3
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What is a Decibel | dB Formula Equation Definition | Radio-Electronics.com
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March 16th, 2015, 08:54 AM   #4
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