High efficiency of graded index photonic crystal as an input coupler

Atilla Ozgur Cakmak; Evrim Colak; Humeyra Caglayan; Hamza Kurt; Ekmel Ozbay

doi:10.1063/1.3130403

High efficiency of graded index photonic crystal as an input coupler

Atilla Ozgur Cakmak, Evrim Colak, Humeyra Caglayan, Hamza Kurt, Ekmel Ozbay

Research output: Contribution to journal › Article › Scientific › peer-review

53 Citations (Scopus)

Abstract

A graded index photonic crystal (GRIN PC) configuration was placed at the input side of a photonic crystal waveguide (PCW) in order to efficiently couple the light waves into the waveguide. We compared the transmission efficiencies of light in the absence and presence of the GRIN PC structure. We report a significant improvement in coupling when the GRIN PC is incorporated with the PCW. The intensity profiles were obtained by carrying out the experiments at microwave frequencies. Finite difference time domain based simulations were found to be in good agreement with our experimental results.

Original language	English
Article number	103708
Journal	Journal of Applied Physics
Volume	105
Issue number	10
DOIs	https://doi.org/10.1063/1.3130403
Publication status	Published - 2009
Externally published	Yes
Publication type	A1 Journal article-refereed

ASJC Scopus subject areas

General Physics and Astronomy

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10.1063/1.3130403

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AU - Colak, Evrim

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AU - Kurt, Hamza

AU - Ozbay, Ekmel

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AB - A graded index photonic crystal (GRIN PC) configuration was placed at the input side of a photonic crystal waveguide (PCW) in order to efficiently couple the light waves into the waveguide. We compared the transmission efficiencies of light in the absence and presence of the GRIN PC structure. We report a significant improvement in coupling when the GRIN PC is incorporated with the PCW. The intensity profiles were obtained by carrying out the experiments at microwave frequencies. Finite difference time domain based simulations were found to be in good agreement with our experimental results.

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High efficiency of graded index photonic crystal as an input coupler

Abstract

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