Hobby Circuit - BROAD BAND 50MHz OPTICAL FIBER RECEIVER VERSION A - Circuits designed by David A. Johnson, P.E.

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Last Updated on: Friday, September 20, 2013 05:49 PM

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More Fiber Optic Circuits Light Detectors

BROAD BAND 50MHz OPTICAL FIBER RECEIVER VERSION A

If the above circuit it still too slow, you can try this circuit. What it lacks in sensitivity it makes up for in speed. The circuit attaches a plastic fiber optic PIN photodiode assembly to a small box containing a small 3v battery and a standard BNC plug. When the box is plugged into to the input of an oscilloscope with a 50-ohm termination resistor, it can detect light pulse frequencies beyond 100MHz.