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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.
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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.
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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
I have a layout very similar to the Lesson 1 Transmitter – External modulated laser with the following changes:
– I changed the psuedorandom bit generator to a bit generator that repeats the sequence 0101…
– I added an SPD to the output of the Mach-Zehnder Modulator, with an Oscilloscope Visualizer connected to the SPD output
The primary parameters should be the same, but just in case:
– Bit rate: 2.5e9
– Sequence length: 128
– Samples per bit: 64
– Sample rate: 1.6e11
– Number of samples: 8192
– Symbol rate: 1e10
Time window: 5.12e-8
I ran the simulation and found, in the oscilloscope readout, alternating periods of 0.4 ns of signal followed by 0.4 ns of no signal. This makes sense given the modulation choice. However, I checked the SPD dead time, the time during which the detector cannot read the number of photons, and the value was 95 ns, which is far greater than the 0.8 ns on-off cycle I see. Why is the detector dead time not coming into play?
Dear Scott,
Could you please email me your project as Zip file to ahmad.atieh@optiwave.com and we’ll check the issue? You can’t load the project to the forum.
Please note that you could set the SPD capture time though the parameter “Collection time” in the Detection Conditions tab of the component properties window.
Let me know if you’d like to discuss further. Also, you may use the Component View feature that you can access by right click on the SPD to view results and 2D Graphs of different plots.
Regards,
Ahmad
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