光无线技术及其应用

通信领域对带宽越来越大的需求正推动着传统无线通信技术的发展。虽然光通信系统和光网络能为人们提供极大的带宽,但这也意味着必须能开发出来新的设备和系统。半导体发光二极管(LED)被认为是未来在建筑、汽车和飞行器上的主要光源。相比于白光光源和荧光光源,LED能提供更高的能量效率,且由于其出色的节能性能,LED在目前全球性的二氧化碳减排行动中也扮演着重要的角色。另外,激光器目前也处在于LED类似的情形中。这些核心器件的出现很可能会大大改变我们对光的使用,不仅是在照明方面,还包括通信、传感、导航、定位、监控和成像等各个方面。

Optical Wireless Technology and Applications

Demands by the communications industry for greater and greater bandwidth push the capability of conventional wireless technology.Optical systems and networks offer a far greater bandwidth.This means new devices and systems have to be developed.Semiconductor light emitting diode（LED） is considered to be the future primary lighting source for buildings,automobiles and aircrafts.LED provides higher energy efficiency compared to incandescent and fluorescent light sources and it will play a major role in the global reduction of carbon dioxide emissions,as a consequence of the significant energy savings.Lasers are also under investigation for similar applications.These core devices have the potential to revolutionize how we use light,including not only for illumination,but as well,for communications,sensing,navigation,positioning,surveillance,and imaging.