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OmniSim

Omni-directional photonic simulations

 IntroductionFeaturesApplicationsOptions

Introduction

Features

 Applications
 ‣ Ring Resonators
‣ Plasmonics
  - Nano-antennae
  - Mie Scattering
  - Light Harvester
‣ Metamaterials
‣ Graphene
‣ Nonlinear optics
  - Plasmonics (FETD,chi2)
  - Soliton (FETD,chi3)
  - PhC Cavity (FDTD,chi3)
‣ Directional Coupler
‣ Butterfly MMI
‣ Diffraction Grating
‣ Gratings with RCWA
‣ Surface Grating Coupler
‣ Nanowire Optimisation
‣ CrystalWave applications

Options

Publications

Download
‣ OmniSim brochure
‣ Nanophotonics brochure

 Request evaluation

Light Harvester

FDTD, FETD and FEFD plasmonic simulations with OmniSim software

Plasmonics can be used to capture light from a large area and concentrate it into a very small area - so called "light harvester" structure. This can be used for example to improve the sensitivity of a photodiode without having to use a lens. A typical harvester geometry consists of a line grating on a thin metal plate with a slot in the middle. The grating is designed to couple incident light into a "spoof plasmon" that is directed to the slot and then through the plate.

OmniSim offers you many ways to model plasmonic structures:

  • the FETD Engine: 2D and 3D finite element time domain

  • the FDTD Engine: 2D and 3D finite difference time domain, featuring a unique subgridding tool

  • the FEFD Engine: fast 2D finite element frequency domain, great for quick optimisation.

We have used all three FETD, FEFD and FDTD Engines to model and optimise light harvesters. You can see below a few examples of designs of field profiles incident on patterned metal surfaces.

Light harvester

Light harvester modelled with the FDTD Engine (left) and the FETD Engine (right)