Alatawi Abdullah A, Holguin-Lerma Jorge A, Kang Chun Hong, Shen Chao, Subedi Ram Chandra, Albadri Abdulrahman M, Alyamani Ahmed Y, Ng Tien Khee, Ooi Boon S
Opt Express. 2018 Oct 1;26(20):26355-26364. doi: 10.1364/OE.26.026355.
We demonstrated a high-power (474 mW) blue superluminescent diode (SLD) on c-plane GaN-substrate for speckle-free solid-state lighting (SSL), and high-speed visible light communication (VLC) link. The device, emitting at 442 nm, showed a large spectral bandwidth of 6.5 nm at an optical power of 105 mW. By integrating a YAG-phosphor-plate to the SLD, a CRI of 85.1 and CCT of 3392 K were measured, thus suitable for solid-state lighting. The SLD shows a relatively large 3-dB modulation bandwidth of >400 MHz, while a record high data rate of 1.45 Gigabit-per-second (Gbps) link has been achieved below forward-error correction (FEC) limit under non-return-to-zero on-off keying (NRZ-OOK) modulation scheme. Our results suggest that SLD is a promising alternative for simultaneous speckle-free white lighting and Gbps data communication dual functionalities.
我们展示了一种用于无散斑固态照明（SSL）和高速可见光通信（VLC）链路的、基于c面氮化镓衬底的高功率（474毫瓦）蓝色超发光二极管（SLD）。该器件在442纳米处发射，在105毫瓦的光功率下显示出6.5纳米的大光谱带宽。通过将YAG荧光板集成到SLD上，测得显色指数（CRI）为85.1，相关色温（CCT）为3392 K，因此适用于固态照明。该SLD显示出大于400兆赫兹的相对较大的3分贝调制带宽，同时在非归零开关键控（NRZ-OOK）调制方案下，在向前纠错（FEC）限制以下实现了创纪录的1.45吉比特每秒（Gbps）的高数据速率链路。我们的结果表明，SLD是同时实现无散斑白光照明和Gbps数据通信双重功能的一种有前景的替代方案。
