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Optiwave software can be used in different industries and applications, including Fiber Optic Communication, Sensing, Pharma/Bio, Military & Satcom, Test & Measurement, Fundamental Research, Solar Panels, Components / Devices, etc..
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Optiwave software can be used in different industries and applications, including Fiber Optic Communication, Sensing, Pharma/Bio, Military & Satcom, Test & Measurement, Fundamental Research, Solar Panels, Components / Devices, etc..
Download our 30-day Free Evaluations, lab assignments, and other freeware here.
I use 100 Gb/s QPSK signal transmitted over 1000 km of SMF and the effect of non-linearity when calculating Q-factor appears at 3 dB when using non-linear coefficient n2=1e-19 ,Aeff=80 , are this parameters practical ? as the typical value of n2 around 3e-20 but it doesn’t affect the value of Q-factor (non linearity doesn’t appear).
If the units of the values that you’ve mentioned above for n2 in m2/W and for Aeff in um2
you’ll find that gamma will be equal to 5 (1/(w.km)) and this a very large value that will affect Q factor.
The possible reason that i think,perhaps you use a DSP component that has a phase correction algorithm (CPE) which correct the phase error due to the nonlinearity and you should disable it in the DSP.
Abdallah i have n2= 26×10^-21 and Aeff =80 then how to calculate value x/Km/W???
What is formula to calculate Gamma??
Dear Abhishek Shrama,
I attached a picture for the formula
can we take vary value of gamma arbitrarily??
I saw it to be 1.3/km/w and 5 in some paper. can I change it ?
It is a characteristic of fiber depend on the manufacture
Thanking you sir
this is very useful to solve my problem
Dear Mai, you are not mentioning the launch power level into the fiber…if it is too low, Q-factor may not be affected by non-linearity.
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