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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 31, Iss. 15 — Aug. 1, 2013
  • pp: 2578–2583

Improving OOK Modulation Rate of Visible LED by Peaking and Carrier Sweep-Out Effects Using ${n}$-Schottky Diodes-Capacitance Circuit

P. H. Binh, V. D. Trong, Pierre Renucci, and X. Marie

Journal of Lightwave Technology, Vol. 31, Issue 15, pp. 2578-2583 (2013)

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In this paper, we present an improvement for LED driver circuit by inserting a threshold voltage on the resistive branch of the conventional RC current-shaping circuit. The proposed method enhances the peaking and carrier sweep-out effects in the LED's active region when the electrical pulse is turned on and off, respectively, thereby the LED modulation rate can be greatly improved. A practical implementation of the transmitter using Schottky diodes to provide the threshold voltage and an off-the-shelf AlGaInP 660 nm RC-LED is reported. We demonstrate an error-free data transmission at the rate of 500 Mbit/s over 20 m step-index POF.

© 2013 IEEE

P. H. Binh, V. D. Trong, Pierre Renucci, and X. Marie, "Improving OOK Modulation Rate of Visible LED by Peaking and Carrier Sweep-Out Effects Using ${n}$-Schottky Diodes-Capacitance Circuit," J. Lightwave Technol. 31, 2578-2583 (2013)

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