光纤光脉冲分路-延迟器及其优化研究

针对高速光脉冲测量系统提出了一种用于高速模拟脉冲信号复制的光纤光脉冲分路 延迟器结构。与其他结构的光纤光脉冲分路 延迟器相比,该结构具有损耗低、输出周期脉冲系列等幅性好的优点。同时,对该结构输出的脉冲功率及其影响因素进行了理论分析。仿真及优化分析表明,通过合理选择各 2×2 耦合器的均匀性并适当安排它们之间的连接顺序,可以增大最小输出脉冲的幅度及减小由于各耦合器的均匀性不为零而引起的输出脉冲幅度系数不等的程度,从而使该结构输出脉冲的参数得到优化。

An Optical Pulse Splitting-Delaying Device Based on Optical Fiber and Its Optimization

An optical pulse splitting-delaying device based on optical fiber was proposed for the replication of a high-speed analog pulse in the measurement system for high-speed optical pulses. Comparing with other optical pulse splitting-delaying devices, its virtues are low loss and small amplitude deviation between pulses. In the following, the power of output pulses from the device and its affect factors are analyzed theoretically. Simulation and optimal analyses indicate that the amplitude of the minimal output pulse can be increased and the amplitude deviation between pulses as a result of nonzero uniformity can be decreased by choosing appropriately uniformity of each 2×2 fiber coupler and arranging reasonably the connection order of those fiber couplers.