Fiber sm sc pigtail Low insertion loss High return loss High repeatability,wearability and stability sm sc pigtail Fiber sm ... ,ST,MU,MTRJ,MPO,E2000PolishingAPC,UPC,PC;Insertion Loss(dB)≤0.2,≤0.3Return Loss(dB)≥50, ≥65Exchangeability(dB)≤0.2Repeatability(dB ...