Retamal, J.R.D. et al.J.R.D. et al.RetamalOubei, H.M.H.M.OubeiJanjua, B.B.JanjuaChi, Y.-C.Y.-C.ChiWang, H.-Y.H.-Y.WangTsai, C.-T.C.-T.TsaiNg, T.K.T.K.NgHsieh, D.-H.D.-H.HsiehKuo, H.-C.H.-C.KuoAlouini, M.-S.M.-S.AlouiniHe, J.-H.J.-H.HeGONG-RU LIN2020-06-112020-06-112015https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962168856&doi=10.1364%2fOE.23.033656&partnerID=40&md5=ae52999fb1af4510bf1d95aeec184218Visible Light Communication (VLC) as a new technology for ultrahigh-speed communication is still limited when using slow modulation light-emitting diode (LED). Alternatively, we present a 4-Gbit/s VLC system using coherent blue-laser diode (LD) via 16-quadrature amplitude modulation orthogonal frequency division multiplexing. By changing the composition and the optical-configuration of a remote phosphor-film the generated white light is tuned from cool day to neutral, and the bit error rate is optimized from 1.9 × 10-2 to 2.8 × 10-5 in a blue filter-free link due to enhanced blue light transmission in forward direction. Briefly, blue-LD is an alternative to LED for generating white light and boosting the data rate of VLC. © 2015 Optical Society of America.Amplitude modulation; Bit error rate; Diodes; Frequency division multiplexing; Light; Light emission; Light transmission; Modulation; Optical communication; Orthogonal frequency division multiplexing; Phosphors; Slow light; Visible light communication; Blue filters; Blue laser diodes; Coherent blue lasers; OFDM transmission; Optical configurations; Remote phosphors; Ultra high speed; Visible light communications (VLC); Light emitting diodesjournal article10.1364/OE.23.0336562-s2.0-84962168856