Optoelectronic Modelling, Circuit Design and Modulation for Polymer-Light Emitting Diodes for Visible Light Communication Systems

Burton, Andrew, Minotto, Alessandro, Haigh, Paul Anthony, Ghassemlooy, Fary, Le Minh, Hoa, Cacialli, Franco and Darwazeh, Izzat (2019) Optoelectronic Modelling, Circuit Design and Modulation for Polymer-Light Emitting Diodes for Visible Light Communication Systems. In: 2019 26th International Conference on Telecommunications (ICT): Ha Noi, Vietnam, April 8-10 2019. IEEE, Piscataway, NJ, pp. 55-59. ISBN 9781728102740, 9781728102733, 9781728102726

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Official URL: https://doi.org/10.1109/ICT.2019.8798790

Abstract

This paper investigates the use of organic polymer light emitting diodes (PLEDs) for the use in visible light communications (VLC). We prepared blue and green emitting PLEDs using commercial light-emitting polymers, and then characterised the device emission (spectrum and power), and extracted their circuit parameters for their electrical equivalent model for driving with small signals. In addition, we characterised the bandwidth ( Bmod ) of the devices over a period of continuous driving (∼ 4 h) and found that for the blue PLEDs the Bmod decreased from an initial 750 kHz to a steady state of ∼250 kHz. The green-emitting devices were found to benefit from an extended Bmod of ∼1.5 MHz at the beginning of the test, which then stabilised to ∼850 kHz. Furthermore, with the addition of a first order RC filter we show that, the steady state Bmod of the blue PLED cane be increased by a factor of ∼3, thus allowing > 1 Mbps non-return to zero on-off keying (NRZ OOK) data transmission in a complete VLC system.

Item Type: Book Section
Uncontrolled Keywords: circuit design, modelling, modulation, organic light-emitting didoes, visible light communications
Subjects: F200 Materials Science
F300 Physics
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Elena Carlaw
Date Deposited: 19 Aug 2019 10:36
Last Modified: 11 Oct 2019 12:37
URI: http://nrl.northumbria.ac.uk/id/eprint/40395

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