Improving OOK Modulation Rate of Visible LED by Peaking and Carrier Sweep-Out Effects Using <formula formulatype="inline"><tex Notation="TeX">${n}$</tex> </formula>-Schottky Diodes-Capacitance Circuit - INSA Toulouse - Institut National des Sciences Appliquées de Toulouse Access content directly
Journal Articles Journal of Lightwave Technology Year : 2013

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

Abstract

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
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Dates and versions

hal-02050435 , version 1 (27-02-2019)

Identifiers

  • HAL Id : hal-02050435 , version 1

Cite

P. Binh, V. Trong, Pierre Renucci, Xavier Marie. Improving OOK Modulation Rate of Visible LED by Peaking and Carrier Sweep-Out Effects Using ${n}$ -Schottky Diodes-Capacitance Circuit. Journal of Lightwave Technology, 2013, 31 (15), pp.2578-2583. ⟨hal-02050435⟩
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