title: Visible light communication using InGaN optical sources with AlInGaP nanomembrane down-converters.
abstract: We report free space visible light communication using InGaN sources, namely micro-LEDs and a laser diode, down-converted by a red-emitting AlInGaP multi-quantum-well nanomembrane. In the case of micro-LEDs, the AlInGaP nanomembrane is capillary-bonded between the sapphire window of a micro-LED array and a hemispherical sapphire lens to provide an integrated optical source. The sapphire lens improves the extraction efficiency of the color-converted light. For the case of the down-converted laser diode, one side of the nanomembrane is bonded to a sapphire lens and the other side optionally onto a dielectric mirror; this nanomembrane-lens structure is remotely excited by the laser diode. Data transmission up to 870 Mb/s using pulse amplitude modulation (PAM) with fractionally spaced decision feedback equalizer is demonstrated for the micro-LED-integrated nanomembrane. A data rate of 1.2 Gb/s is achieved using orthogonal frequency division multiplexing (ODFM) with the laser diode pumped sample.
authors.forename: J M M
authors.initials: JM
authors.lastname: Santos
authors.forename: S
authors.initials: S
authors.lastname: Rajbhandari
authors.forename: D
authors.initials: D
authors.lastname: Tsonev
authors.forename: H
authors.initials: H
authors.lastname: Chun
authors.forename: B
authors.initials: B
authors.lastname: Guilhabert
authors.forename: A B
authors.initials: AB
authors.lastname: Krysa
authors.forename: A E
authors.initials: AE
authors.lastname: Kelly
authors.forename: H
authors.initials: H
authors.lastname: Haas
authors.forename: D C
authors.initials: DC
authors.lastname: O'Brien
authors.forename: N
authors.initials: N
authors.lastname: Laurand
authors.forename: M D
authors.initials: MD
authors.lastname: Dawson