... ,12 Cores,ect Offer FCC,CE,ROHS,ISO9001 UC UPC APC fiber optic patch cord Offer CE/ROHS, single mode/multi ... Parameters : 1 . Insertion Loss ( Single - Mode : PC ≤ 0.2 db ,APC ≤ 0.3 db , Multi - Mode : PC ≤ 0.3 db ) . 2 ... . Return Loss ( Single - Mode : PC ≥ 50 db , APC ≥ 50 db , Multi - Mode : PC ≥ 45)3.Working Temperature:-40 ...