4-GHz modulation bandwidth of integrated 2 × 2 LED array

Chao Hsin Wu; Gabriel Walter; Han Wui Then; Milton Feng; Nick Holonyak

doi:10.1109/LPT.2009.2034385

4-GHz modulation bandwidth of integrated 2 × 2 LED array

Chao Hsin Wu, Gabriel Walter, Han Wui Then, Milton Feng, Nick Holonyak

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrate a 4.3-GHz high-speed "tiltedcharge" 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.

Original language	English (US)
Article number	5325805
Pages (from-to)	1834-1836
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	21
Issue number	24
DOIs	https://doi.org/10.1109/LPT.2009.2034385
State	Published - Dec 2009

Keywords

Light-emitting diodes (LEDs)
Optical arrays
Optical communication

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

Online availability

10.1109/LPT.2009.2034385

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title = "4-GHz modulation bandwidth of integrated 2 × 2 LED array",

abstract = "We demonstrate a 4.3-GHz high-speed {"}tiltedcharge{"} 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.",

keywords = "Light-emitting diodes (LEDs), Optical arrays, Optical communication",

author = "Wu, {Chao Hsin} and Gabriel Walter and Then, {Han Wui} and Milton Feng and Nick Holonyak",

note = "Funding Information: Manuscript received August 13, 2009; revised September 23, 2009. First published November 10, 2009; current version published December 01, 2009. This work was supported by the Army Research Office under Grant W911NF-08-1-0469. The work of G. Walter was supported by the Brain Gain Malaysia Diaspora (MOSTI) Program. The work of M. Feng was supported by the N. Holonyak, Jr. Chair of Electrical and Computer Engineering. The work of N. Holonyak, Jr. was supported by the J. Bardeen Chair (Sony) of Electrical and Computer Engineering and Physics.",

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doi = "10.1109/LPT.2009.2034385",

language = "English (US)",

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AU - Wu, Chao Hsin

AU - Walter, Gabriel

AU - Then, Han Wui

AU - Feng, Milton

AU - Holonyak, Nick

N1 - Funding Information: Manuscript received August 13, 2009; revised September 23, 2009. First published November 10, 2009; current version published December 01, 2009. This work was supported by the Army Research Office under Grant W911NF-08-1-0469. The work of G. Walter was supported by the Brain Gain Malaysia Diaspora (MOSTI) Program. The work of M. Feng was supported by the N. Holonyak, Jr. Chair of Electrical and Computer Engineering. The work of N. Holonyak, Jr. was supported by the J. Bardeen Chair (Sony) of Electrical and Computer Engineering and Physics.

PY - 2009/12

Y1 - 2009/12

N2 - We demonstrate a 4.3-GHz high-speed "tiltedcharge" 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.

AB - We demonstrate a 4.3-GHz high-speed "tiltedcharge" 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.

KW - Light-emitting diodes (LEDs)

KW - Optical arrays

KW - Optical communication

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4-GHz modulation bandwidth of integrated 2 × 2 LED array

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Keywords

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