... Standard-NC (tube) Tree structure Stainless steel tube 1x2 optical coupler, SM, single window, standard-NC (tube), 9/125um, ... ±20nm, stainless steel sleeve (Φ3*54mm), Φ0.25mm bare fiber, 1m, SC/PC connector.FeatureLow insertion loss, low PDL. ... Temperature -40 ~ +85ApplicationFTTH, LAN, PON & Optical CATVLocal ring netOptical fiber communication systemOptical fiber test equipmentOptical fiber sensor