Q value Description

[siva rama krishnaParticipant]

Hi,
The Q value obtained in BER Analyzer block is in dB or linear?
In OptSim Q is in both dB and linear how can i compare Q values obtained from OptiSystem with same corresponding layout in OptSim software.

[Tech SupportParticipant]

The calculated Q-factor values in OptiSystem are linear.

+2

[Jojo MathewParticipant]

Hello Siva rama krishna, Tech Support is right in saying that the Q-values obtained fro the optisystem are linear. If you are interested in taking the Q-values in dB then kindly apply the log units and convert them into dB.
Regards.

+1

[SAHIL SINGHParticipant]

Hi Siva Rama Krishna,

As far as the calculated Q-factor values in OptiSystem are concerned,they are linear.. But i really dont know how to compare Q values obtained from OptiSystem with same corresponding layout in OptSim software…

Regards

Sahil Singh

[MHD NAParticipant]

he Q-values obtained fro the optisystem are linear. If you are interested in taking the Q-values in dB then kindly apply the log units and convert them into dB.

[Ranjeet KumarParticipant]

Hi fayiqa ma’m
In physics and engineering the quality factor or Q factor is a dimensionless parameter. The higher the Q, the narrower and ‘sharper’ the peak is. In many design we plot Q-factor and min. BER against input power in dbm.

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