The meshless mode solvers, on the other hand, have the correct asymptotic behavior far from the fiber, and can calculate fields of magnitude 10-15 or less. Meshing introduces finite difference errors of a certain level, and fields weaker than the differencing error cannot be calculated. These advanced mode solvers should be especially useful for multimode fiber calculations, where there are many modes in the spectrum.Īnother advantage of the meshless mode solver is the calculation of fields far from the fiber. OptiFiber 2.0 mode solvers find an exact solution based on matching boundary conditions at layer boundaries instead of relying on meshes to approximate the structure. Meshless Mode Solversfor LP and Vector Modes: Optical fibers may consist of an arbitrary number of concentric layers of lossless materials, and graded index fibers can be approximated using a sequence of constant index layers. Calculation of birefringence and PMD from intrinsic or extrinsic perturbations.Visualization of multimode interference patterns with propagation.Multimode fiber design, such as 50/125 m and 62.5/125 m silica fibers.Single mode fiber designs such as Corning SMF-28, dispersion flattened or shifted fibers.Analysis of measured fiber profiles from instruments such as the EXFO NR-9200.Fiber mode solving of LP or Vector modes by Finite Difference or by Transfer Matrix Methods.Assess parameters, sensitivities, and tolerances.OptiFiber uses numerical mode solvers and other models specialized to fibers for calculating dispersion, losses, birefringence, and PMD. Dimensions of the fiber cross-section, material composition, and refractive index profile all influence important linear and non-linear phenomena. The optimal design of a given optical communication system depends directly on the choice of fiber parameters.
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