Fiber Optic Link Loss Budget
A fiber optic link budget, also known as a "loss budget," indicates the total acceptable amount of optical power loss (expressed in decibels) that a fiber optic link can have. These losses result from cables, connectors, splices, couplers and equipment in the installed system. Loss budgets are typically determined in the network design stage.
Fiber Optic Link Loss Budget
| TIA standard for connecor loss | .75dB |
| TYPICAL: | |
| Cable attenuation at 1310nm | .4 dB/km |
| Cable attenuation at 1550nm | .3 dB/km |
| Splice attenuation | .1 dB/km |
| Distance between splices | 6 km |
| Safety margin | 3 dB |