Useful parameters for Fiber Link budget

Some useful parameters for calculating fiber link budget. This is for simple networks only. To view this in pictures Please click on the images.

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1.Fiber loss at the operating wavelength

Cable Length	2.0	2.0
Fiber Type	Multimode		Singlemode
Wavelength (nm)	850	1300	1310	1550
Fiber Atten. dB/km	3 [3.5]	1 [1.5]	0.4 [1/0.5]	0.3 [1/0.5]
Total Fiber Loss	6.0 [7.0]	2.0 [3.0]

-Brackets for maximum value.

2.Connector Loss
Multimode connectors losses of 0.2-0.5 dB. Singlemode connectors losses of 0.1-0.2 dB. Max allowable 0.75

3.Splice Loss
0.1-0.5 dB for multimode splices, 0.3 for singlemode fiber less than 0.05 dB

those are the basic for fiber link budget, for more accuracy there also need to take account of-
Add the fiber loss, connector and splice losses to get the link loss. Data From Manufacturer's Specification and
Loss Margin Calculation

Dynamic Range (dB) (above)	15	15
Cable plant Link Loss (dB)	3.8 (Typ)	7.05 (TIA)
Link Loss Margin (dB)	11.2	7.95