200 Mb/s visible optical wireless transmission based on NRZ–OOK modulation of phosphorescent white L

• 作 者: 李洪磊 陈雄斌 郭俊清 唐丹颖 黄北举 陈弘达
• 机 构: State Key Laboratory of Integrated Optoelectronics,Institute of Semiconductors,Chinese Academy of Sc
• 出 处: Chinese Optics Letters
• 发表日期: 2014年10期
• 关键词: emphasis visible illumination bandwidth commercially return amplifier filtering

We present a high-speed visible light communication(VLC) link that uses a commercially available phosphorescent white light-emitting diode(LED). Such devices have few megahertz bandwidth due to the slow response of phosphorescent component,which severely limit the transmission data rate of VLC system. We propose a simple pre-emphasis circuit. With blue-filtering and the pre-emphasis circuit,the bandwidth of VLC system can be enhanced from 3 to 77.6 MHz,which allows non-return-to-zero on-off-keying(NRZ–OOK) data transmission up to 200 Mb/s with the bit error ratio of 5.3 × 10-7 which is below 10-6. The VLC link operates at the room illumination level of ~1000 lx at 1.1 m range using a single 1 W white LED.

We present a high-speed visible light communication (VLC) link that uses a commercially available phosphorescent white light-emitting diode (LED). Such devices have few megahertz bandwidth due to the slow response of phosphorescent component, which severely limit the transmission data rate With blue-filtering and the pre-emphasis circuit, the bandwidth of the VLC system can be enhanced from 3 to 77.6 MHz, which allows non-return-to-zero on-off The keying (NRZ-OOK) data transmission up to 200 Mb / s with the bit error ratio of 5.3 × 10-7 which is below 10-6. The VLC link operates at the room illumination level of ~ 1000 lx at 1.1 m range using a single 1 W white LED.