3-12 F650 DIGITAL BAY CONTROLLER GEK-106310-AF
3.5 TRANSCEIVER OPTICAL POWER BUDGET VS. LINK LENGTH CHAPTER 3: HARDWARE
3.5 Transceiver optical power budget vs. link length
Optical Power Budget (OPB) is the available optical power for a fiber optic link to accommodate fiber cable losses plus
losses due to in-line connectors, splices, and optical switches. OPB also provides a margin for link aging and unplanned
losses due to cable plant reconfiguration and repair.
OPB (dB) Fiber optic Cable length
(km)
62.5/125 μm 50/125 μm
11.4 8 0
10.9 7.4 0.3
10.5 7.1 0.5
9.6 6.2 1.0
8.5 5.3 1.5
7.3 4.3 2.0
6 3.3 2.5
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