Lumerical Fdtd Tutorial !!link!! Link

Lumerical FDTD Tutorial: A Comprehensive Guide to Finite-Difference Time-Domain Simulations

Simulation Region: Define the FDTD solver region. Choose between 2D or 3D, and set the simulation time and background material (typically air, Step 2: Boundary Conditions and Meshing lumerical fdtd tutorial

2. High PML Reflection

• Cause: The PML is too close to the scattering object.
• Fix: At least 10 mesh cells of vacuum between your structure and the PML boundary.

Conclusion

B. Profile Monitor (Field Visualization) Cause: The PML is too close to the scattering object

E1 = getdata("fiber_monitor","E");
E2 = getdata("chip_monitor","E");
coupling = abs(integrate(E1*conj(E2)))^2 / (norm(E1)^2 * norm(E2)^2);