Using beam propagation method (BPM), key optical design parameters of InP/AlGaInAs multiple quantumwell (MQW) ring laser were numerically analyzed. The influences of waveguide dimensions, curvature radiusand gap s...Using beam propagation method (BPM), key optical design parameters of InP/AlGaInAs multiple quantumwell (MQW) ring laser were numerically analyzed. The influences of waveguide dimensions, curvature radiusand gap size on the coupling efficiency were discussed. An InP/AlGaInAs MQW ring laser with radius of 350 μm wasdesigned and realized. The experimental results show that the designed device, lasing at 1 563.2 nm with side modesuppression ratio higher than 20 dB, exhibited unidirectional bistability between the clockwise and counterclockwisemodes.展开更多
从铀矿冶企业生产实际出发,结合生产安全事故特点,以SQL Server 2008为后台数据库,使用ADO.NET框架和C#语言开发了铀矿冶生产安全事故管理系统。该系统包括用户管理模块、信息管理模块和信息查询模块,可进行铀矿冶生产安全事故信息的增...从铀矿冶企业生产实际出发,结合生产安全事故特点,以SQL Server 2008为后台数据库,使用ADO.NET框架和C#语言开发了铀矿冶生产安全事故管理系统。该系统包括用户管理模块、信息管理模块和信息查询模块,可进行铀矿冶生产安全事故信息的增、删、改、查及分类统计,用户界面友好,使用方便。以某铀矿山2009—2016年生产安全事故(事件)信息作为运行验证数据进行了系统运行实证,系统运行良好,实现了预期的功能。展开更多
基金Supported by the National Natural Science Foundation of China(No.61106052)
文摘Using beam propagation method (BPM), key optical design parameters of InP/AlGaInAs multiple quantumwell (MQW) ring laser were numerically analyzed. The influences of waveguide dimensions, curvature radiusand gap size on the coupling efficiency were discussed. An InP/AlGaInAs MQW ring laser with radius of 350 μm wasdesigned and realized. The experimental results show that the designed device, lasing at 1 563.2 nm with side modesuppression ratio higher than 20 dB, exhibited unidirectional bistability between the clockwise and counterclockwisemodes.
文摘从铀矿冶企业生产实际出发,结合生产安全事故特点,以SQL Server 2008为后台数据库,使用ADO.NET框架和C#语言开发了铀矿冶生产安全事故管理系统。该系统包括用户管理模块、信息管理模块和信息查询模块,可进行铀矿冶生产安全事故信息的增、删、改、查及分类统计,用户界面友好,使用方便。以某铀矿山2009—2016年生产安全事故(事件)信息作为运行验证数据进行了系统运行实证,系统运行良好,实现了预期的功能。