Off-axis directional beaming via photonic crystal surface modes

Humeyra Caglayan; Irfan Bulu; Ekmel Ozbay

doi:10.1063/1.2842424

Off-axis directional beaming via photonic crystal surface modes

Humeyra Caglayan^*
, Irfan Bulu
, Ekmel Ozbay

^*Corresponding author for this work

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

35 Citations (Scopus)

Abstract

We investigated off-axis directional beaming from a photonic crystal (PC) waveguide. We theoretically and experimentally demonstrated that it is possible to control beaming from a PC waveguide via PC surface modes using a gratinglike layer with different periods on different sides of the waveguide. We observed off-axis directional beaming with full width at half maximum of 10° with a beaming angle of 14° from a PC waveguide. Since the beaming angle only depends on the periods of the gratinglike layer on the output side, this beaming angle can be easily changed by arranging the grating periods asymmetrically.

Original language	English
Article number	092114
Journal	Applied Physics Letters
Volume	92
Issue number	9
DOIs	https://doi.org/10.1063/1.2842424
Publication status	Published - 2008
Externally published	Yes
Publication type	A1 Journal article-refereed

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2842424

Cite this

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AB - We investigated off-axis directional beaming from a photonic crystal (PC) waveguide. We theoretically and experimentally demonstrated that it is possible to control beaming from a PC waveguide via PC surface modes using a gratinglike layer with different periods on different sides of the waveguide. We observed off-axis directional beaming with full width at half maximum of 10° with a beaming angle of 14° from a PC waveguide. Since the beaming angle only depends on the periods of the gratinglike layer on the output side, this beaming angle can be easily changed by arranging the grating periods asymmetrically.

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Off-axis directional beaming via photonic crystal surface modes

Abstract

ASJC Scopus subject areas

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