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.×ðÁúÈËÉú¾ÍÊDz©×¨ÒµÑб¬·¢²úPM VOA,¹¤Òµ¼¶PM VOA,ÊÇÒ»¸öרҵµÄPM VOA³§¼Ò,ÓкܺõÄPM VOA¼Û¸ñ¡£×ðÁúÈËÉú¾ÍÊDz©×¨ÒµÑб¬·¢²úµÄPM VOA¹ã·ºÓ¦ÓÃÓÚº½Ìì¡¢º½¿Õ¡¢µçÁ¦¡¢Ìú·¡¢Ò½ÁÆ¡¢½»Í¨¡¢Í¨ÐÅ¡¢µÈ¸÷´óÁìÓò¡£