通过研究无源光网络系统结构和功能模块,结合数据采集系统和光时域反射仪(Optical Time Domain Reflectometer,OTDR)的监测特点,提出一种基于二维光编码技术的无源光网络实时监测系统设计方案,从组成架构、建设实践等方面进行解析,并通...通过研究无源光网络系统结构和功能模块,结合数据采集系统和光时域反射仪(Optical Time Domain Reflectometer,OTDR)的监测特点,提出一种基于二维光编码技术的无源光网络实时监测系统设计方案,从组成架构、建设实践等方面进行解析,并通过仿真实验进一步论证方案的有效性。展开更多
An optical code generating device for security access system application is presented. The code generating device constructed using asymmetric hollow optical waveguide coupler design provides a unique series of output...An optical code generating device for security access system application is presented. The code generating device constructed using asymmetric hollow optical waveguide coupler design provides a unique series of output light intensities which are successively used as an optical code. The design of the waveguide is made using two major components which are asymmetric Y-junction splitter and a linear taper. Waveguiding is done using a hollow waveguide structure. Construction of higher level 1×N hollow waveguide coupler is done utilizing a basic 1×2 asymmetric waveguide coupler design together with a cascaded design scheme. Non-sequential ray tracing of the asymmetric hollow optical waveguide couplers is performed to predict the optical transmission properties of the waveguide. A representation of the code combination that can be generated from the device is obtained using combinatory number theory.展开更多
基金The National Nature Science Foundation of China(Nos.61575037,61420021)the China Scholarship Council(No.201606075076)the Innovation Funds of Collaboration Innovation Center of Electronic Materials and Devices(No.ICEM2015-2001)
基金Universiti Teknologi MARA for the financial support on this project.
文摘An optical code generating device for security access system application is presented. The code generating device constructed using asymmetric hollow optical waveguide coupler design provides a unique series of output light intensities which are successively used as an optical code. The design of the waveguide is made using two major components which are asymmetric Y-junction splitter and a linear taper. Waveguiding is done using a hollow waveguide structure. Construction of higher level 1×N hollow waveguide coupler is done utilizing a basic 1×2 asymmetric waveguide coupler design together with a cascaded design scheme. Non-sequential ray tracing of the asymmetric hollow optical waveguide couplers is performed to predict the optical transmission properties of the waveguide. A representation of the code combination that can be generated from the device is obtained using combinatory number theory.
