PM Manual Variable Optical Attenuator:the PM Manual Variable Optical Attenuator is designed and manufactured to reduce the output optical power, get the power suitable. It is with low insertion loss, high extinction ration, high return loss and low Adjustment Precision,The PM Attenuator is widely apllied at fiber laser ,fier CWDM/DWDM/OADM communication system.北億纖通專業研發生產PM VOA,工業級PM VOA,是一個專業的PM VOA廠家,有很好的PM VOA價格。北億纖通專業研發生產的PM VOA廣泛應用于航天、航空、電力、鐵路、醫療、交通、通信、等各大領域。