The device consists of an electromagnet moving ferronickel opticalshutter interposed in a fiber gap, and it's actuation causes optical attenuation.
这种光衰减器是由电磁驱动插在两对准单模光纤间隙中的挡光片来实现光功率的衰减。
2
The principle of the opticalshutter system is presented, and a system is designed according to the wavelength and repetition frequency of light pulse, and the dimension and length of bunches in HLS.