Abstract
The basic electrical equivalent circuit of an AlGaInP based 650 nm ring-LED proposed for plastic-optical fiber data-links is derived. The LED's modulation bandwidth is found to be 65 MHz at a link average driving bias current of 35 mA. The LED's modulation response is measured and shows an open-eye diagram for 156 Mbps non-return-to-zero (NRZ), pseudo-random signals with and without a peaking circuit, respectively.
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