Driving LED in a Nanosecond Regime by a Fast Operational Amplifier

Details Driving LED in a Nanosecond Regime by a Fast Operational Amplifier Driving LED in a Nanosecond Regime by a Fast Operational Amplifier

2010-11-09

arxiv.org/abs/1011.1954v1

Physics

Condensed Matter

Other Condensed Matter

9 pages, 10 figures

Scientific paper

It is widely believed that the generation of high speed optical signals is not the job for an LED. However this work is done to show that there are techniques which can be used to produce nanosecond square pulses from a diode. Rise and fall times of a typical 10ns long signal were 1-2 ns and the intensity of the emission could be controlled by the supply voltage. The wavelength of the radiation was 472 nm, which is blue in colour, but any longer or even shorter wavelengths can similarly be used. The consistency of the experiment and its theoretical model was analysed by computer simulations using OrCAD and PSPICE.

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