Abstract
We demonstrate a 4.3-GHz high-speed "tilted-charge" integrated 2×2 light-emitting diode (LED) array. With an array of four LEDs operating in parallel, the optical output power can be as much as tripled while the peak high-speed performance of its individual LED component is preserved. The gigahertz bandwidth is achieved by utilizing a "drain" layer, common to all the devices in the array, to enforce a "tilted-charge" condition where only fast recombination is employed for the modulation of optical output. The successful integration of four "tilted-charge" LEDs in a parallel array paves the way towards a simple viable solution for ultra-high-speed short range optical communication.
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