Indeed, a photodetector is out of question there, since you want to convert luminous energy to electrical energy, and not modulate an electrical current with the aid of a photo signal. Photovoltaic cells seem the way to go there.thanks for the comment...
Actually, my title for the project is to 'design of photonic power to electrical converter'. That means, to design an Optical-electrical converter which is suitable for optical power transmission.
I have been advised that not to use photodetector, since it is mainly use for data communication but not power transmission. In this case, Photovoltaics will be choosed to convert the optical power from laser to electrical power for home application.!
Well, I think you should have an idea to start. It is already time consuming helping someone by correcting mistakes or improving his project. Imagine doing entire projects for others. It is not that I don't like to help, but you would learn much more if you develop ideas of your own (even if they are wrong).So, how should i design the circuit for this converter?
There is not a lot to choose then we are talking about photovoltaic cells. I'm afraid you will have to stick to what you can get in terms of cells. Don't expect a great efficiency. 15% efficiency is the best you can find, but those high efficiency cells are too expensive and not comercially available.Ya... Thanks for you advise..
But the problem is that i don't know how to start it...
The source of photoboltaic is really limited...
Can anybody give some direction which can help me more understand about the photovoltaics?
You can also do selective etching and concentrators to squeeze out more energy. Tecstar used to be Spectrolab's main competitor their cells were into the 20%+ range in the late 90's.Boeing-Spectrolab got more than 40% from their experimental panels this summer.
12% is the norm for panels on today's market.
Being that the case, for more efficiency, try to match the laser wavelength to the photovoltaic cell's sensitivity peak.My design ideal is shine directly the laser to photovoltaic cell.
Is it correct?
How to relate wavelength from laser, λ, to the output electrical signal, ampere,A. What is the formula?
I dun know how to match the laser wavelength to the photovoltaic cell's sensitivity peak. What is the formula? Can you provide any reference for me?Being that the case, for more efficiency, try to match the laser wavelength to the photovoltaic cell's sensitivity peak.
Means that the optical fiber by itself is very efficiency.The optical fiber itself is very very efficient it is just that the energy required to "make" the laser light is very inefficient so it is not usually the first method that pops up when you discuss transferring power.
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by Jake Hertz