• Home
• Products
• Events
• Training
• Support
• Industry
• Academic
• Model Gallery
• Community

Model Gallery

• Home

• Model Gallery
  • Browse by Application Area
  • Browse by Engineering Field
  • Browse by Product
  • Model Animations

Model ID: 190

Stress-Optical Effects in Waveguide

Planar photonic waveguides in silica (SiO2) have a great potential for use in wavelength routing applications. The major problem with these kinds of waveguides is birefringence. Anisotropic refractive indices result in fundamental mode splitting and pulse broadening. The goal is to minimize birefringence effects by adapting materials and manufacturing processes. One source of birefringence is the use of a silicon (Si) wafer on which the waveguide structure is deposited.

After annealing at high temperature mismatch in thermal expansivity between the silica and silicon layers results in thermally induced stresses in the structure at the operating temperature (typically room temperature).

Here we can see the stress-induced birefringence together with the deformation.

• Click here to get more information about this model

COMSOL RSS

Privacy Policy