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Dynamic response of high-speed PIN and Schottky-barrier photodiode layers to nonuniform optical illumination

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2 Author(s)
George, G. ; Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA ; Krusius, J.P.

We calculate the transient response of a PIN photodiode including the effects of diffusion currents for optical generation in arbitrarily thick p, i, and n regions (i.e., for short absorption lengths) for sinusoidal, impulse, and, where possible, step optical inputs. Analytic solutions are obtained for the sinusoidal and impulse responses; the impulse response may be used to compute the step response and the response to arbitrarily-shaped input functions. These results are extended to Schottky-barrier photodiodes. The impact of these results on device analysis and design is discussed. Methods of improving high speed device performance are suggested

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Lightwave Technology, Journal of  (Volume:12 ,  Issue: 8 )