6533b859fe1ef96bd12b7989
RESEARCH PRODUCT
A method of variation of boundaries for waveguide grating couplers
Giulio Ciraolosubject
Electromagnetic fieldPhysicsField (physics)business.industryApplied MathematicsPhysics::Opticswave propagationIntegrated circuitVariation (game tree)Radiationoptical waveguidesWaveguide (optics)law.inventionOpticsAperiodic graphlawHelmholtz equationbusinessSeries expansionAnalysisdescription
We describe a method for calculating the solution of the electromagnetic field in a non-rectilinear open waveguide by using a series expansion, starting from the field of a rectilinear waveguide. Our approach is based on a method of variation of boundaries. We prove that the obtained series expansion converges and we provide a radiation condition at infinity in such a way that the problem has a unique solution. Our approach can model several kinds of optical devices which are used in optical integrated circuits. Numerical examples will be shown for the case of finite aperiodic waveguide grating couplers.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-09-01 | Applicable Analysis |