高速微型1×2磁光开关

设计和分析了一种新型的用于全光通信网络的高速微型1×2磁光开关，包括光学光路和高速控制. 纳秒脉冲发生器的纳秒脉冲电流用于控制传输1550 nm光束的磁光晶体的磁化强度. 对纳秒脉冲发生器的电路设计方案和纳秒脉冲磁场设计方案分别进行计算机仿真和实验验证. 结果表明：纳秒脉冲发生器能够输出上升沿1.9-3.2 ns、上升幅度10-90 V和脉宽4-100 ns的脉冲. 在单片机MCU的控制下，可以实现光束的平稳切换，目前的开关时间小于1 μs.

A Micro High-Speed 1×2 Magneto-Optic Switch

A novel micro high-speed 1×2 magneto-optic switch,which is used in high-speed all-optical communication network,is designed and analyzed. The study of micro high-speed magneto-optic switch mainly involves the optical route and high-speed control technique design. Nanosecond pulsed current transients from nanosecond impulser are used to switch the magnetization of the magneto-optic crystal,which propagates a 1550nm optical beam. The electronic circuits of nanosecond impulser and the pulsed magnetic field design schemes are both simulated on computer and tested by the experiments respectively.The experiment results state that the nanosecond impulser can output the pulse,with rising edge time 1.3～3.2 ns,voltage amplitude 10～90 V and pulse width 4～100 ns. Under the control of MCU singlechip,the optical beam can be stably switched and the switching time is less than 1μs currently.