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Narrowband Optical Coupler Using Fano Interference in First Order Diffraction

Publications associées (87)

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Analysis of nematic-liquid-crystal binary gratings with high spatial frequency

Toralf Scharf

The behavior of nematic liquid crystals in spatially varying electrical fields is investigated. Director profiles of nematic-liquid-crystal phase gratings are simulated for different orientations of the liquid-crystal director field with respect to the ele ...

2000

Pseudospectral method for the analysis of diffractive optical elements

Jan Sickmann Hesthaven

A pseudospectral method for the analysis of diffractive optical elements is presented. This method is a full-vectorial direct solution of the time-domain Maxwell equations based on a spectral approximation of the spatial derivatives employed within a multi ...

OPTICAL SOC AMER1999

Spectral collocation time-domain modeling of diffractive optical elements

Jan Sickmann Hesthaven

A spectral collocation multi-domain scheme is developed for the accurate and efficient time-domain solution of Maxwell's equations within multi-layered diffractive optical elements. Special attention is being paid to the modeling of out-of-plane waveguide ...

ACADEMIC PRESS INC1999

Secondary grating formation by readout at Bragg-null incidence

Demetri Psaltis

We show that when a dynamic hologram is read out by illumination at the Bragg nulls of a previously recorded grating the diffracted beam inside the medium can result in the recording of two secondary gratings that alter the final selectivity curve. This is ...

1999

Pseudospectral time-domain modeling of diffractive optical elements

Jan Sickmann Hesthaven

We develop a pseudospectral multi-domain formulation for the accurate modeling of generic diffractive optical elements, here exemplified by off-plane waveguide holograms for the coupling between guided waves and freely propagating wavefronts. The individua ...

Applied Computational Electromagnetics Soc, Monterey, CA, United States1998

Holographic data storage in a DX-center material

Demetri Psaltis

We report on the optical storage of digital data in a semiconductor sample containing DX centers. The diffraction efficiency and the bit-error-rate performance of multiplexed data images are shown to agree well with a simple model of the material. Uniform ...

1997

Polymer bound chromogenic crown-ethers as the cladding material for polymer optical waveguides

Harm-Anton Klok

The synthesis and spectroscopic characterization of the chromoionophoric poly(methyl methacrylate-co-N-(9-[10-methacryloylmethyl]anthrylmethyl)monoaza-18-crown-6) (4) copolymer is described. Complexation of K+ by extraction from aqueous medium w ...

1996