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

Lookup NU author(s): Dr Paul HaighORCiD


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© 2019 IEEE.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 (\boldsymbol{B-{mod}}) of the devices over a period of continuous driving (∼ 4 h) and found that for the blue PLEDs the \boldsymbol{B-{mod}} decreased from an initial 750 kHz to a steady state of ∼250 kHz. The green-emitting devices were found to benefit from an extended \boldsymbol{B-{mod}} 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 \boldsymbol{B-{mod}} 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.

Publication metadata

Author(s): Burton A, Minotto A, Haigh PA, Ghassemlooy Z, Minh HL, Cacialli F, Darwazeh I

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 26th International Conference on Telecommunications, ICT 2019

Year of Conference: 2019

Pages: 55-59

Online publication date: 15/08/2019

Acceptance date: 02/04/2016

Publisher: Institute of Electrical and Electronics Engineers Inc.


DOI: 10.1109/ICT.2019.8798790

Library holdings: Search Newcastle University Library for this item

ISBN: 9781728102733