Phosphorous Diffuser Diverged Blue Laser Diode for Indoor Lighting and Communication.
Phosphorous Diffuser Diverged Blue Laser Diode for Indoor Lighting and Communication.
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DOI：
10.1038/srep18690
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发表时间：
2015-12-21
影响因子：
4.6
通讯作者：
Lin GR
中科院分区：
文献类型：
--
作者：
Chi YC;Hsieh DH;Lin CY;Chen HY;Huang CY;He JH;Ooi B;DenBaars SP;Nakamura S;Kuo HC;Lin GR
提出了一种基于蓝色氮化镓（GaN）激光二极管（LD）和紧凑型白光磷漫射体的先进光保真（Li-Fi）系统，用于融合室内白光照明和可见光通信（VLC）。粘附有磷扩散层的蓝色GaN LD拓宽了发光光谱并发散了光束点，以提供丰富的功能，包括Li-Fi功能的完整性和白光照明的质量。磷漫射体发散的白光光斑覆盖高达120 °的辐射角，CIE坐标为（0.34，0.37）。另一方面，蓝色LD的吞吐量频率响应的劣化主要归因于来自荧光粉-空气界面的反射引起的自反馈。它代表了当前最先进的性能，在60 cm自由空间链路上承载5.2 Gbit/s正交频分复用16正交幅度调制（16-QAM OFDM）数据，误码率（BER）为3.1 × 10−3。这项工作的目的是探索磷扩散发散蓝色GaN LD的可扩展性，为未来的混合白光照明和VLC系统。
An advanced light-fidelity (Li-Fi) system based on the blue Gallium nitride (GaN) laser diode (LD) with a compact white-light phosphorous diffuser is demonstrated for fusing the indoor white-lighting and visible light communication (VLC). The phosphorous diffuser adhered blue GaN LD broadens luminescent spectrum and diverges beam spot to provide ample functionality including the completeness of Li-Fi feature and the quality of white-lighting. The phosphorous diffuser diverged white-light spot covers a radiant angle up to 120o with CIE coordinates of (0.34, 0.37). On the other hand, the degradation on throughput frequency response of the blue LD is mainly attributed to the self-feedback caused by the reflection from the phosphor-air interface. It represents the current state-of-the-art performance on carrying 5.2-Gbit/s orthogonal frequency-division multiplexed 16-quadrature-amplitude modulation (16-QAM OFDM) data with a bit error rate (BER) of 3.1 × 10−3 over a 60-cm free-space link. This work aims to explore the plausibility of the phosphorous diffuser diverged blue GaN LD for future hybrid white-lighting and VLC systems.