A multispectral mixed white light WDM-VLC system combining color domain with time domain

Lu Cui, Yi Tang*, Qingwei Zhu, Heqing Huang, Xuebin Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Since rare multi-primary white LED, traditional Wavelength Division Multiplexing (WDM) visible light communication (VLC) system only has R, G, B three channels. In view of the WDM technology restricted by white LED device in VLC, a method of multispectral mixed light optical communication is proposed. According to the color characteristic of LED light, feature of multi-pulse position modulation (MPPM) and the approach of mixing light, a MPPM dimming modulation is designed for each channel, which uniforms the color and time domain that can realize communication and white light output in the meantime. A multispectral mixed light optical communication system is built using four single-color LEDs. The experimental results show that a white color, 5500K color temperature, is obtained when four channels parallel communication, and chromatic aberration is indecipherable for human eyes (CIE 1976 Δu'ν'<0.005). Multispectral mixed light optical communication is feasible.

Original languageEnglish
Pages (from-to)79-84
Number of pages6
JournalGuangdian Gongcheng/Opto-Electronic Engineering
Volume43
Issue number7
DOIs
Publication statusPublished - 1 Jul 2016

Keywords

  • Multi-pulse position modulation (MPPM)
  • Multispectral mixed white light
  • Optical communications
  • Visible light communication
  • Wavelength division multiplexing (WDM) technology

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Cui, L., Tang, Y., Zhu, Q., Huang, H., & Zhang, X. (2016). A multispectral mixed white light WDM-VLC system combining color domain with time domain. Guangdian Gongcheng/Opto-Electronic Engineering, 43(7), 79-84. https://doi.org/10.3969/j.issn.1003-501X.2016.07.013