Using a Single VCSEL Source Employing OFDM Downstream Signal and Remodulated OOK Upstream Signal for Bi-directional Visible Light Communications

In this work, we propose and demonstrate for the first time up to our knowledge, using a 682 nm visible vertical-cavity surface-emitting laser (VCSEL) applied in a bi-directional wavelength remodulated VLC system with a free space transmission distance of 3 m. To achieve a high VLC downstream traffic, spectral efficient orthogonal-frequency-division-multiplexing quadrature-amplitude-modulation (OFDM-QAM) with bit and power loading algorithms are applied on the VCSEL in the central office (CO). The OFDM downstream wavelength is remodulated by an acousto-optic modulator (AOM) with OOK modulation to produce the upstream traffic in the client side. Hence, only a single VCSEL laser is needed for the proposed bi-directional VLC system, achieving 10.6 Gbit/s OFDM downstream and 2 Mbit/s remodulated OOK upstream simultaneously. For the proposed system, as a single laser source with wavelength remodulation is used, the laser wavelength and temperature managements at the client side are not needed; and the whole system could be cost effective and energy efficient.

[1]  Chi-Wai Chow,et al.  Utilization of multi-band OFDM modulation to increase traffic rate of phosphor-LED wireless VLC. , 2015, Optics express.

[2]  Hao-Chung Kuo,et al.  450-nm GaN laser diode enables high-speed visible light communication with 9-Gbps QAM-OFDM. , 2015, Optics express.

[3]  William Lehr,et al.  Mobile Broadband Growth, Spectrum Scarcity, and Sustainable Competition , 2011 .

[4]  Jiun-Yu Sung,et al.  Is blue optical filter necessary in high speed phosphor-based white light LED visible light communications? , 2014, Optics express.

[5]  Hong-Yi Yu,et al.  A Long Distance Underwater Visible Light Communication System With Single Photon Avalanche Diode , 2016, IEEE Photonics Journal.

[6]  D. O’brien,et al.  High-Speed Visible Light Communications Using Multiple-Resonant Equalization , 2008, IEEE Photonics Technology Letters.

[7]  Meng Shi,et al.  4.05-Gb/s RGB LED-based VLC system utilizing PS-Manchester coded Nyquist PAM-8 modulation and hybrid time-frequency domain equalization , 2017, 2017 Optical Fiber Communications Conference and Exhibition (OFC).

[8]  Qiang Zhou,et al.  A chalcone derivative reactivates latent HIV-1 transcription through activating P-TEFb and promoting Tat-SEC interaction on viral promoter , 2017, Scientific Reports.

[9]  Eduward Tangdiongga,et al.  10 Gbps all-optical full-duplex indoor optical wireless communication with wavelength reuse , 2016, 2016 Optical Fiber Communications Conference and Exhibition (OFC).

[10]  Nan Chi,et al.  Enabling technologies for high speed visible light communication , 2017, 2017 Optical Fiber Communications Conference and Exhibition (OFC).

[11]  Hai-Han Lu,et al.  A 100-Gb/s Multiple-Input Multiple-Output Visible Laser Light Communication System , 2014, Journal of Lightwave Technology.

[12]  Chi-Wai Chow,et al.  Polarization-multiplexed 2×2 phosphor-LED wireless light communication without using analog equalization and optical blue filter , 2015 .

[13]  Chien-Hung Yeh,et al.  6.36 Gbit/s RGB LED-based WDM MIMO visible light communication system employing OFDM modulation , 2017, 2017 Optical Fiber Communications Conference and Exhibition (OFC).

[14]  Hai-Han Lu,et al.  A 5 m/25 Gbps Underwater Wireless Optical Communication System , 2016, IEEE Photonics Journal.

[15]  Shaoen Wu,et al.  Visible light communications for 5G wireless networking systems: from fixed to mobile communications , 2014, IEEE Network.

[16]  Michael J. Vilcheck,et al.  Large-aperture multiple quantum well modulating retroreflector for free-space optical data transfer on unmanned aerial vehicles , 2001 .

[17]  Chi-Wai Chow,et al.  Investigation of phosphor-LED lamp for real-time half-duplex wireless VLC system , 2016 .

[18]  F. Hanson,et al.  High bandwidth underwater optical communication. , 2008, Applied optics.

[19]  Chien-Hung Yeh,et al.  0.52-11.86 Gbit/s OFDM modulation for power-sharing VLC transmission by using VCSEL laser. , 2016, Optics express.

[20]  Badri N. Vellambi,et al.  Indoor Positioning System Using Visible Light and Accelerometer , 2014, Journal of Lightwave Technology.

[21]  H. Haas,et al.  LED Based Wavelength Division Multiplexed 10 Gb/s Visible Light Communications , 2016, Journal of Lightwave Technology.

[22]  G. Pazour,et al.  Ror2 signaling regulates Golgi structure and transport through IFT20 for tumor invasiveness , 2017, Scientific Reports.

[23]  Hai-Han Lu,et al.  An 8 m/9.6 Gbps Underwater Wireless Optical Communication System , 2016, IEEE Photonics Journal.

[24]  Mingming Tan,et al.  Visible light communications using a directly modulated 422 nm GaN laser diode. , 2013, Optics letters.

[25]  W.S. Rabinovich,et al.  Infrared data link using a multiple quantum well modulating retro-reflector on a small rotary-wing UAV , 2000, 2000 IEEE Aerospace Conference. Proceedings (Cat. No.00TH8484).

[26]  K. Langer,et al.  513 Mbit/s Visible Light Communications Link Based on DMT-Modulation of a White LED , 2010, Journal of Lightwave Technology.

[27]  Chin-Wei Hsu,et al.  High Speed Imaging 3 × 3 MIMO Phosphor White-Light LED Based Visible Light Communication System , 2016, IEEE Photonics Journal.

[28]  Gong-Ru Lin,et al.  Tricolor R/G/B Laser Diode Based Eye-Safe White Lighting Communication Beyond 8 Gbit/s , 2017, Scientific Reports.

[29]  Preben E. Mogensen,et al.  An Empirical Study of Urban Macro Propagation at 10, 18 and 28 GHz , 2016, 2016 IEEE 83rd Vehicular Technology Conference (VTC Spring).

[30]  Fumio Teraoka,et al.  High data rate ground-to-train free-space optical communication system , 2012 .

[31]  Liang-Yu Wei,et al.  Bi-directional Visible Light Communication Using a Single 682nm Visible Vertical-Cavity Surface-Emitting Laser (VCSEL) and Signal Remodulation , 2017, 2017 European Conference on Optical Communication (ECOC).

[32]  Chin-Wei Hsu,et al.  Visible Light Positioning and Lighting Based on Identity Positioning and RF Carrier Allocation Technique Using a Solar Cell Receiver , 2016, IEEE Photonics Journal.

[33]  Chien-Hung Yeh,et al.  Digital Signal Processing for Light Emitting Diode Based Visible Light Communication , 2012 .

[34]  Lutz H.-J. Lampe,et al.  Physical-Layer Security for MISO Visible Light Communication Channels , 2015, IEEE Journal on Selected Areas in Communications.

[35]  Chi-Wai Chow,et al.  Light Encryption Scheme Using Light-Emitting Diode and Camera Image Sensor , 2016, IEEE Photonics Journal.

[36]  Jianjun Yu,et al.  Demonstration of 575-Mb/s downlink and 225-Mb/s uplink bi-directional SCM-WDM visible light communication using RGB LED and phosphor-based LED. , 2013, Optics express.