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Photonic Crystal

Application ID: 14703

Photonic crystal devices are periodic structures of alternating layers of materials with different refractive indices. Waveguides that are confined inside of a photonic crystal can have very sharp low-loss bends, which may enable an increase in integration density of several orders of magnitude. This is a study of a photonic crystal waveguide. The crystal features a grid of GaAs pillars. Depending on the distance between the pillars, waves within a certain frequency range will be reflected instead of propagating through the crystal. This frequency range is called the photonic band gap. When some of the GaAs pillars in the crystal structure are removed, a guide for the frequencies within the band gap is created. Light can then propagate along the outlined guide geometry.

This application was built using the following:

Wave Optics Module

The combination of COMSOL® products required to model your application depends on the physics interfaces that define it. Particular physics interfaces may be common to several products (see the Specification Chart for more details). To determine the right combination of products for your project, you should evaluate all of your needs in light of each product's capabilities, consultation with the COMSOL Sales and Support teams, and the use of an evaluation license.