Resonant-grating reflection extended to wide-band, large-aperture beams by waveguide-mode coalescence

The resonant reflection of a free-space beam from a slab waveguide grating is rendered high bandwidth and angularly robust by using a bimodal high index waveguide. A deep double-sided corrugation gives rise to the coalescence of the resonant reflection peaks resulting in a top-hat reflection spectru...

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Bibliographic Details
Published inOptics express Vol. 20; no. 28; pp. 29155 - 29163
Main Authors Jourlin, Y, Tonchev, S, Tishchenko, A V, Lacour, F, Parriaux, O
Format Journal Article
LanguageEnglish
Published United States Optical Society of America - OSA Publishing 31.12.2012
Subjects
Optics
Physics
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Summary:The resonant reflection of a free-space beam from a slab waveguide grating is rendered high bandwidth and angularly robust by using a bimodal high index waveguide. A deep double-sided corrugation gives rise to the coalescence of the resonant reflection peaks resulting in a top-hat reflection spectrum. A low-cost waveguide technology based on solar cell amorphous silicon is demonstrated in the near infrared in a polarizer application.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.20.029155