Fiber Loss Margin Calculator | Fiber Loss Margin Formula

This page covers Fiber Loss Margin calculator. The fiber loss margin formula is also mentioned.

LED Power (PL), mWatt (input1) :

LED to fiber loss (Lsf), dB (input2) :

Fiber loss (FL) , dB/km (input3) :

Fiber Length (L) , Km(input4) :

Connector loss (Lconn) , dB (input5) :

Fiber to detector loss (Lfd), dB (input6) :

receiver sensitivity (Ps), dBm (input7) :


Fiber Loss margin (Lm) , dB (Output1):

Example:
INPUTS : PL = 2 mW, Lsf=3 dB, FL = 0.5 dB/Km, L = 40 km, Lconn = 1 dB, Lfd = 3 dB, Ps = -36 dB
OUTPUT: Loss Margin ( Lm ) = 12.010 dB


Fiber loss margin formula/equation

Following equation/formula is used for fiber loss margin calculation.


fiber loss margin formula

Also refer difference between LED and Laser.

Useful converters and calculators

More Optical Fiber Links

RF and Wireless tutorials