What is the normal optical loss for a switch
Return loss is the amount of light reflected from a single discontinuity in an optical fiber link such as a connector pair. To be able to judge whether a fiber optic cable plant is good, one does a insertion loss test with a light source and power meter and compares that to an estimate of what is a reasonable loss for that cable plant. Assuming the measured dBm values provided by each switch's SFP are accurate, can you calculate the real-time loss for the fiber link as follows: Switch1->Switch2 Loss (dB) = Switch1 TxPwr - Switch2 RxPwr and Switch2->Switch1 Loss (dB) = Switch2 TxPwr - Switch1 RxPwr Of course, this results in a.
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