利用双光纤准直器研制出一种基于微电机械系统(M icro E lectron ic M echan ica l System,M EM S)技术的连续可调光衰减器,利用双光纤准直器光纤头(P igta il)的楔角面对C-L ens准直透镜产生的色散进行了补偿,使得该衰减器工作在C-B an...利用双光纤准直器研制出一种基于微电机械系统(M icro E lectron ic M echan ica l System,M EM S)技术的连续可调光衰减器,利用双光纤准直器光纤头(P igta il)的楔角面对C-L ens准直透镜产生的色散进行了补偿,使得该衰减器工作在C-B and及衰减范围内具有极低的波长相关损耗(W ave lengthD ependen t Loss,W DL)值.分析了影响该衰减器的其它光学性能的各个因素.对所试制样品进行测试结果表明:该衰减器具有良好的光学性能,插损(Insertion Loss,IL),回损(R eturn Loss,RL)等指标达到理想的结果,特别是W DL指标性能优于同类产品.展开更多
MEMS CAD( CAD used in Micro-Electro-Mechanical System )的发展还处在一个初级阶段 ,是否能站在一个高起点上主要取决于对该领域相似问题的认识程度和对新技术的掌握程度。通过吸取传统CAD软件系统设计的经验 ,针对其中出现的几点重...MEMS CAD( CAD used in Micro-Electro-Mechanical System )的发展还处在一个初级阶段 ,是否能站在一个高起点上主要取决于对该领域相似问题的认识程度和对新技术的掌握程度。通过吸取传统CAD软件系统设计的经验 ,针对其中出现的几点重要性能 :语言无关性、平台无关性、模块的独立性、网络运用的稳定性 ,提出了构建于 CORBA( Common Object Request Broker Architecture)规范之上的分布式 MEMS展开更多
The design and fabrication of a RF MEMS switch is reported for the first time in China.The switching element consists of a thin metallic membrane,which has the metal-isolator-metal contact and a capacitive shunt switc...The design and fabrication of a RF MEMS switch is reported for the first time in China.The switching element consists of a thin metallic membrane,which has the metal-isolator-metal contact and a capacitive shunt switch as single-pole single-throw.When an electrostatic potential is applied to the membrane and the bottom electrode,the attractive electrostatic force pulls the metal membrane down onto the bottom dielectric.The switch characteristics,such as insertion loss and isolation,depend on the off and on-capacitance.The test results are as follows:the pulldown voltage is about 20V;the insertion loss is less than 0 69dB from DC to 20GHz in the up-state;the isolation is more than 13dB from 14 to 18GHz and 16dB from 18 to 20GHz in the down-state.展开更多
文摘利用双光纤准直器研制出一种基于微电机械系统(M icro E lectron ic M echan ica l System,M EM S)技术的连续可调光衰减器,利用双光纤准直器光纤头(P igta il)的楔角面对C-L ens准直透镜产生的色散进行了补偿,使得该衰减器工作在C-B and及衰减范围内具有极低的波长相关损耗(W ave lengthD ependen t Loss,W DL)值.分析了影响该衰减器的其它光学性能的各个因素.对所试制样品进行测试结果表明:该衰减器具有良好的光学性能,插损(Insertion Loss,IL),回损(R eturn Loss,RL)等指标达到理想的结果,特别是W DL指标性能优于同类产品.
文摘MEMS CAD( CAD used in Micro-Electro-Mechanical System )的发展还处在一个初级阶段 ,是否能站在一个高起点上主要取决于对该领域相似问题的认识程度和对新技术的掌握程度。通过吸取传统CAD软件系统设计的经验 ,针对其中出现的几点重要性能 :语言无关性、平台无关性、模块的独立性、网络运用的稳定性 ,提出了构建于 CORBA( Common Object Request Broker Architecture)规范之上的分布式 MEMS
文摘The design and fabrication of a RF MEMS switch is reported for the first time in China.The switching element consists of a thin metallic membrane,which has the metal-isolator-metal contact and a capacitive shunt switch as single-pole single-throw.When an electrostatic potential is applied to the membrane and the bottom electrode,the attractive electrostatic force pulls the metal membrane down onto the bottom dielectric.The switch characteristics,such as insertion loss and isolation,depend on the off and on-capacitance.The test results are as follows:the pulldown voltage is about 20V;the insertion loss is less than 0 69dB from DC to 20GHz in the up-state;the isolation is more than 13dB from 14 to 18GHz and 16dB from 18 to 20GHz in the down-state.
