Fast analysis method for polarization-dependent performance of a concave diffraction grating with total-internal-reflection facets

• A fast simulation method for a waveguide-based concave grating with total-internal-reflection (TIR) facets is presented using the Kirchhoff-Huygens principle. Unlike the conventional scalar method, modifications are made to take into account the influence of the Goos-Hanchen (GH) shift. The simple method is in good agreement with a numerical method based on rigorous coupled-wave analysis for a wide range of practical device parameters and can provide an insightful physical explanation for the numerical results. It is shown that the GH shift is a main contributing factor for the loss and the polarization-dependent loss of an etched diffraction grating demultiplexer with TIR facets.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)

Nyckelord

Computer simulation

Light polarization

Light reflection

Mathematical models

Numerical methods

Optical communication

Optical waveguides

Refractive index

Wavelength division multiplexing

Arrayed waveguide gratings

Etched diffraction gratings (EDGs)

Goos-Hanchen (GH) shift

Hybrid diffraction method (HBD)

Kirchoff-Huygens principle

Total-internal-reflection (TIR)

Photonics

Fotonik

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)