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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..
OptiSystem is a comprehensive software design suite that enables users to plan, test, and simulate optical links in the transmission layer of modern optical networks.
OptiInstrument addresses the needs of researchers, scientists, photonic engineers, professors and students who are working with instruments.
OptiSPICE is the first circuit design software for analysis of integrated circuits including interactions of optical and electronic components. It allows for the design and simulation of opto-electronic circuits at the transistor level, from laser drivers to transimpedance amplifiers, optical interconnects and electronic equalizers.
OptiFDTD is a powerful, highly integrated, and user friendly CAD environment that enables the design and simulation of advanced passive and non-linear photonic components.
OptiBPM is a comprehensive CAD environment used for the design of complex optical waveguides. Perform guiding, coupling, switching, splitting, multiplexing, and demultiplexing of optical signals in photonic devices.
The optimal design of a given optical communication system depends directly on the choice of fiber parameters. OptiFiber uses numerical mode solvers and other models specialized to fibers for calculating dispersion, losses, birefringence, and PMD.
Emerging as a de facto standard over the last decade, OptiGrating has delivered powerful and user friendly design software for modeling integrated and fiber optic devices that incorporate optical gratings.
Download our 30-day Free Evaluations, lab assignments, and other freeware here.Â
Hello everyone,
I’m doing 16QAM signal. I got constellation diagram. but , i can’t get any result about BER and eye diagram. it is still null.
please help me to find where i did mistake.
See attachment.
Thanks a lot
is there must be DSP when I want to get BER and eye-diagram?
for star-16QAM, there is no DSP in Optisystem. how can I get almost real values for BER?
my schema is attached. Eye diagram is seems like very big. is there any way to correct it?
Hi Boldoo, the main functions of DSP are forward error correction (FEC) encoding, constellation mapping (MAP), fiber nonlinearity compensation (NLC), up-sampling (UpS), electronic dispersion precompensation (EDC), Nyquist prefiltering. As far as I know there is no DSP in OptiSustem. This component (written in Matlab) can be found in ‘100 Gbps DP-QPSK System with DSP’ example.
Usually, to get BER values you should compare the PRBS from generator to the ones you obtain from receiver for each channel. Can you, please, upload the screen shot of your scheme as well?
Ravil makes some good points, but I will also point out an error in your project. A common mistake for calculating the BER is using the BER Analyzer for a QAM signal. Since in your design you are detecting the QAM seqeuence and then generating a new one, the eye diagram will be near perfect with no noise.
Search the forum for BER Test Set examples or you could also use the error vector magnitude estimation from the constellation diagram.
Regards