Burton, A;
Minotto, A;
Haigh, PA;
Ghassemlooy, Z;
Minh, HL;
Cacialli, F;
Darwazeh, I;
(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).
(pp. pp. 55-59).
IEEE: Hanoi, Vietnam.
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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.
| Type: | Proceedings paper |
|---|---|
| Title: | Optoelectronic Modelling, Circuit Design and Modulation for Polymer-Light Emitting Diodes for Visible Light Communication Systems |
| Event: | 2019 26th International Conference on Telecommunications (ICT) |
| ISBN-13: | 9781728102733 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ICT.2019.8798790 |
| Publisher version: | https://doi.org/10.1109/ICT.2019.8798790 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | circuit design, modelling, modulation, organic lightemitting didoes, visible light communications |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10081770 |
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