main
new features
applications
downloads
referencesFeatures
NEW VERSION OptiFDTD 10.0 (May 2011)
The latest version of OptiFDTD introduces an OptiFDTD Linux 3D simulator, extended material model database, optimized input pulse parameters, interface for scanning user-defined parameters, and a vastly improved OptiMode module.
NEW FEATURE Linux Version Of 64-bit 3D Simulator
A number of our users have access to powerful multi-CPU PC-running Linux operating systems. To help them utilize their calculation capabilities, we have developed a 64-bit simulator for the Linux platform. The simulator allows for a parallel/concurrent processing engine supporting multi-CPU/multi-core calculations. The computational memory space is limited only by the 64-bit Linux operating system and its underlying Intel/AMD hardware platform.
NEW FEATURE Enhanced Library Of Optical Materials
We have added new optical materials to our library to be used in FDTD simulations. The description and characteristics of these newly added materials has been documented in an independent manual.
NEW FEATURE Optimized GMCW Input
We have improved the user interface and calculation formulas for defining the pulse’s time offset and half-width associated with the corresponding bandwidth. The definition of Input Plane’s GMCW input parameters (like pulse time offset and half-width) used to have the same default values which were not associated with (nor corresponding to) the time domain waveform or its center wavelength. The user had to constantly adjust bandwidth and graph display. We have addressed these issues by automating a more intelligent default parameter selection, as well as auto-adjusting the spectrum data display ranges.
NEW FEATURE Parameter Sweep In OptiFDTD Simulation
OptiFDTD 10 has a new graphical user interface for simplifying parameter sweeps. The user can define nested sweeps and select parameters to define how their values are assigned during sweep iterations. All of this can be accomplished directly from the user interface without the need for any programming.
NEW FEATURE Optimizer For OptiMode
When the scanning and graphical displays have narrowed the search, the Optimizer can be used to find the optimum. The Optimizer uses the Golden Search method for one parameter optimization. Multi-parameter searches use either the Modified Powell direction set search, or the Nelder-Mead Simplex method.
NEW FEATURE Layout View In OptiMode
We have added a new tab in the Cross Section Designer that shows the ideal waveguide geometry. In previous versions, only the refractive index distribution after application of the mesh was displayed. The Layout View is extremely useful when making more complicated layouts, as seen in applications such as the Photonic Crystal Fiber.
NEW FEATURE New Graphical Display Features For OptiMode Parameter Scans
Associated with the scanning parameter dialog box in OptiMode is the option to specify graphs of the data that will appear in the OptiMode Analyzer. A second parameter can also be included that will produce a graph with several curves. This second parameter will appear in the graph’s Legend. The graph displays the solution trends that will enhance the search for optimum designs.
