... . High return loss 3. Low insertion loss 4. High repeatability ST optical fiber adaptor Fiber optic adaptor is the mechanical device ... , that holds the two ferrules together. There are FC, SC, ST, LC, MU, MTRJ, DIN, D4 and hybrid adaptors for your ... parameter Parameter unitFC, LC, SCFC-SC,FC-LCST, MUFC-ST,SC-ST,FC-MUMTRJSMMMSMMMSMMMPCUPCAPCPCPCUPCPCPCUPCPCInsertion loss (typical)dB≤0.3≤0.2≤0 ...