POF data link employing a display-type green LED fabricated from GaN material
POF data link employing a display-type green LED fabricated from GaN material
复制标题
POF 数据链路采用由 GaN 材料制成的显示型绿色 LED
DOI：
10.1117/12.476565
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发表时间：
2003
期刊：
影响因子：
56.9
通讯作者：
Hiroshi Ito
中科院分区：
文献类型：
--
作者：
S. Kato;M. Kagami;Hiroshi Ito
与聚甲基丙烯酸甲酯（PMMA）塑料光纤（POF）系统一起使用时需要结合520 nm的绿色光源的数据链路，因为与650 nm的常规红色光源相比，它们具有较低的衰减系数。近来，已经基于氮化镓（GaN）材料开发了绿色LED，并且高光学输出功率GaN绿色LED灯现在可商购用于显示器应用中的一般用途。在本文中，我们详细描述了这些GaN绿色LED的基本特性，是由于采用塑料光纤数据链。我们评估的光输出功率和中心波长偏移的温度系数，并证明了符合IEEE 1394 S100操作的绿色LED塑料光纤数据链。GaN绿色LED作为下一代塑料光纤数据链路的光源，在汽车应用或长距离室内多媒体网络中似乎是有前途的候选者。这是因为，正如我们将展示的那样，它们可以在高温下工作，并且与由AlGaInP材料制成的红色LED相比，温度灵敏度降低。
Data links incorporating a green light source at 520nm are required for use with polymethyl methacrylate (PMMA) plastic optical fiber (POF) systems because they have a lower attenuation coefficient compared with conventional red light sources at 650nm. Recently, green LEDs have been developed based on Gallium Nitride (GaN) materials, and high optical output power GaN green LED lamps are now commercially available for general use in display applications. In this paper, we describe in detail the fundamental characteristics of these GaN green LEDs that are due to be employed in POF data links. We evaluate the temperature coefficients of the optical output power and the center wavelength shift and also demonstrate a green LED POF data link that complies with IEEE 1394 S100 operation. GaN green LEDs seem to be promising candidates as light sources for the next generation of POF data links for automotive applications or for long distance In-house multimedia networks. This is because, as we will show, they can operate both at high temperatures and with reduced temperature sensitivity compared with red LEDs fabricated from AlGaInP materials.