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紫激光二极管实现照明通信。

Violet Laser Diode Enables Lighting Communication.

机构信息

Graduate Institute of Photonics and Optoelectronics, National Taiwan University (NTU), No. 1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan, R.O.C.

Department of Photonics, National Sun Yat-Sen University (NSYSU), No. 70, Lienhai Rd., Kaohsiung, 80424, Taiwan, R.O.C.

出版信息

Sci Rep. 2017 Sep 5;7(1):10469. doi: 10.1038/s41598-017-11186-0.

DOI:10.1038/s41598-017-11186-0
PMID:28874879
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5585212/
Abstract

Violet laser diode (VLD) based white-light source with high color rendering index (CRI) for lighting communication is implemented by covering with YAlO:Ce (YAG:Ce) or LuAlO:Ce/CaAlSiN:Eu (LuAG:Ce/CASN:Eu) phosphorous diffuser plates. After passing the beam of VLD biased at 70 mA (2I ) through the YAG:Ce phosphorous diffuser, a daylight with a correlated color temperature (CCT) of 5068 K and a CRI of 65 is acquired to provide a forward error correction (FEC) certified data rate of 4.4 Gbit/s. By using the VLD biased at 122 mA (3.5I ) to excite the LuAG:Ce/CASN:Eu phosphorous diffuser with 0.85-mm thickness, a warm white-light source with a CCT of 2700 K and a CRI of 87.9 is obtained at a cost of decreasing transmission capacity to 2.4 Gbit/s. Thinning the phosphor thickness to 0.75 mm effectively reduces the required bias current by 32 mA to achieve the same CCT for the delivered white light, which offers an enlarged CRI of 89.1 and an increased data rate of 4.4 Gbit/s. Further enlarging the bias current to 105 mA remains the white-light transmission capacity at 4.4 Gbit/s but reveals an increased CCT of 3023 K and an upgraded CRI of 91.5.

摘要

通过覆盖 YAlO:Ce(YAG:Ce) 或 LuAlO:Ce/CaAlSiN:Eu(LuAG:Ce/CASN:Eu) 荧光粉扩散板，实现了基于紫色激光二极管(VLD)的高显色指数(CRI)白光光源用于照明通信。在将偏置电流为 70mA(2I)的 VLD 光束通过 YAG:Ce 荧光粉扩散板后，获得相关色温(CCT)为 5068K、显色指数(CRI)为 65 的日光，从而提供经过前向纠错(FEC)认证的数据速率为 4.4Gbit/s。通过使用偏置电流为 122mA(3.5I)的 VLD 来激发厚度为 0.85mm 的 LuAG:Ce/CASN:Eu 荧光粉扩散板，以 2700K 的相关色温(CCT)和 87.9 的显色指数(CRI)获得暖白光光源，代价是传输容量降低至 2.4Gbit/s。将荧光粉厚度减薄至 0.75mm 可有效降低所需偏置电流 32mA，从而实现相同的白光 CCT，提供了更大的 CRI 为 89.1 和更高的数据速率 4.4Gbit/s。进一步将偏置电流增加到 105mA，仍保持 4.4Gbit/s 的白光传输容量，但显示出更高的 CCT 为 3023K 和更高的 CRI 为 91.5。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09f5/5585212/118f53543239/41598_2017_11186_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09f5/5585212/fea9e883eefc/41598_2017_11186_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09f5/5585212/135509508214/41598_2017_11186_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09f5/5585212/efcc5f06040b/41598_2017_11186_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09f5/5585212/4d439654d13c/41598_2017_11186_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09f5/5585212/118f53543239/41598_2017_11186_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09f5/5585212/fea9e883eefc/41598_2017_11186_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09f5/5585212/135509508214/41598_2017_11186_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09f5/5585212/efcc5f06040b/41598_2017_11186_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09f5/5585212/4d439654d13c/41598_2017_11186_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09f5/5585212/118f53543239/41598_2017_11186_Fig5_HTML.jpg

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