Adiabatic vertical coupling

- July 6, 2022 at 2:47 am
  
  venkatasatyasaidharmateja.paladugu
  Subscriber
  
  Hi,
  I am trying to visualize the vertical mode coupling between Silicon and Lithium Niobate waveguide. Using FDE solver, I am able to see correct modes at selected cross sections. However, if I try to use propagate in FDE or FDTD solver, I am seeing a drop in E magnitude along the length of Silicon but no significant increase in E magnitude along Lithium Niobate waveguide. Can someone please help me with this?
  Below result is FDTD 1D monitor (along length) through center of Si (Blue) and Lithium Niobate (Green) waveguides.
- July 6, 2022 at 8:50 pm
  
  Guilin Sun
  Ansys Employee
  
  Without seeing the settings, I can only guess: please significantly increase the simulation time, reduce autsohutoff min, and make sure the PML is sufficiently thick, usually half wavelength. You can use a time monitor at the output end and make sure the signal decays completely when the simulation terminates.

Viewing 1 reply thread

The topic ‘Adiabatic vertical coupling’ is closed to new replies.

Ansys Innovation Space

SimACE-23

Boost Ansys Fluent Simulations with AWS

Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.

Earth Rescue – An Ansys Online Series

The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.

Ansys Blog

Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.

Trending discussions