Design Fiber-to-Waveguide Coupling for Photonic Integrated Circuits

Efficient fiber-to-waveguide coupling is critical for photonic integrated circuits. However, it is very challenging because of the mode mismatch and high sensitivity to misalignment between the fiber and the waveguide. To address this challenge, various coupling mechanisms have been exploited using sophisticated coupler designs involving complex light interactions with structures from the microscale to the macroscale. Simulations of these complex interactions are essential for the coupler design. Here, we are introducing a multi-scale simulation workflow to design the coupler making use of the interoperability between Ansys Lumerical and Ansys Zemax OpticStudio.