Focusing of partially coherent light into planar waveguides | Zendy

Toni Saastamoinen | Zendy; Markku Kuittinen | Zendy; Pasi Vahimaa | Zendy; Jari Turunen | Zendy; Jani Tervo | Zendy

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Focusing of partially coherent light into planar waveguides

Author(s) -

Toni Saastamoinen,

Markku Kuittinen,

Pasi Vahimaa,

Jari Turunen,

Jani Tervo

Publication year - 2004

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.12.004511

Subject(s) - optics , planar , waveguide , superposition principle , diffraction , physics , coupling (piping) , multi mode optical fiber , refractive index , gaussian , materials science , optical fiber , computer graphics (images) , quantum mechanics , computer science , metallurgy

Edge coupling of a focused partially coherent Gaussian Schell-model beam into a planar dielectric waveguide is examined. The incident field is decomposed into a sum of coherent modes that are expressed as a discrete superposition of plane-wave components. A model based on the rigorous diffraction theory of gratings is used to replace the waveguide with a corresponding periodic multilayer structure to determine the coupling efficiencies. Numerical simulations are presented for single and multimode planar waveguides and for a graded index waveguide. The results are compared with the predictions of the overlap integral method.

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