Open AccessGigabit-class optical wireless communication system at indoor distances (15 – 4 m)
Author(s) -
G. Cossu,
Wajahat Ali,
R. Corsini,
E. Ciaramella
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.015700
Subject(s) - telecommunications link , wavelength division multiplexing , gigabit , optical wireless , optics , visible light communication , multiplexing , bit error rate , wireless , computer science , optical filter , optical wireless communications , channel (broadcasting) , optical communication , wavelength , modulation (music) , electronic engineering , physics , telecommunications , light emitting diode , engineering , acoustics
In this paper we experimentally realized bidirectional optical wireless communication (OWC) link using four channel visible LED board exploiting wavelength division multiplexing (WDM) for the downlink and infrared LED for uplink. We achieved greater than 5 Gbit/s data rate at common indoor distance (1.5 to 4 m) for downlink and 1.5 Gbit/s for uplink using commercially available LEDs. We achieved these results after a careful choice of the LED emission wavelengths and the optical filter spectra. Moreover, we investigate the optimal LED working current and the optimal modulation depth. The bit error ratios of all the channels were maintained lower than the FEC limit (3.8·10(-3)).