... insertion loss, low PDL High directivity, high return loss All-optical structure 1x2 optical coupler SM, single window 1310 ... FeatureLow insertion loss, low PDL. High directivity, high return loss. All-optical structure. Stainless steel sleeve.Electrical ... Temperature -40 ~ +85ApplicationFTTH, LAN, PON & Optical CATVLocal ring netOptical fiber communication systemOptical fiber test equipmentOptical ...