Direct integration of micro-LEDs and a SPAD detector on a silicon CMOS chip for data communications and time-of-flight ranging

Carreira, J. F. C. and Griffiths, A. D. and Xie, E. and Guilhabert, B. J. E. and Herrnsdorf, J. and Henderson, R. K. and Gu, E. and Strain, M. J. and Dawson, M. D. (2020) Direct integration of micro-LEDs and a SPAD detector on a silicon CMOS chip for data communications and time-of-flight ranging. Optics Express, 28 (5). pp. 6909-6917. ISSN 1094-4087 (https://doi.org/10.1364/OE.384746)

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Abstract

We present integration of singulated micron-sized light emitting diodes (micro-LEDs) directly onto a silicon CMOS drive chip using a transfer printing method. An 8x8 micro-LED device array with individual control over each pixel is demonstrated with modulation bandwidths up to 50 MHz, limited by the large modulation depth of the driver chip. The 2 kHz frame rate CMOS driver also incorporates a Single Photon Avalanche Diode device thus allowing detection and transmission functionality on a single integrated chip. Visible light communications at data rates up to 1 Mbps, and time-of-flight ranging with cm-scale resolution are demonstrated using this hybrid integrated system.

ORCID iDs

Griffiths, A. D. ORCID: https://orcid.org/0000-0002-1124-4751

Xie, E. ORCID: https://orcid.org/0000-0001-7776-8091

Guilhabert, B. J. E. ORCID: https://orcid.org/0000-0002-3986-8566

Herrnsdorf, J. ORCID: https://orcid.org/0000-0002-3856-5782

Gu, E. ORCID: https://orcid.org/0000-0002-7607-9902

Strain, M. J. ORCID: https://orcid.org/0000-0002-9752-3144

Dawson, M. D. ORCID: https://orcid.org/0000-0002-6639-2989

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  Item type:	Article
  ID code:	71641
  Dates:	Date Event 2 March 2020 Published 14 February 2020 Accepted
  Subjects:	Science > Physics
  Department:	Faculty of Science > Physics > Institute of Photonics Faculty of Science > Physics Technology and Innovation Centre > Photonics
  Depositing user:	Pure Administrator
  Date deposited:	03 Mar 2020 12:10
  Last modified:	11 Nov 2024 12:36
  URI:	https://strathprints.strath.ac.uk/id/eprint/71641