A planar waveguide interferometer with sub-wavelength fringe spacing

Yuri B. Ovchinnikov; Tilman Pfau

Laser 2001 - World of Photonics 15th International Conference on Lasers and Electrooptics in Europe
Technical Digest Series (Optica Publishing Group, 2001),
paper PS195

A planar waveguide interferometer with sub-wavelength fringe spacing

Yuri B. Ovchinnikov and Tilman Pfau

The European Conference on Lasers and Electro-Optics 2001

Munich Germany
18–22 June 2001
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Y. B. Ovchinnikov and T. Pfau, "A planar waveguide interferometer with sub-wavelength fringe spacing," in Laser 2001 - World of Photonics 15th International Conference on Lasers and Electrooptics in Europe, Technical Digest Series (Optica Publishing Group, 2001), paper PS195.

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Abstract

It is shown that a planar multimode waveguide formed by two parallel metal mirrors works as a new type of an interferometer with fringe spacing much smaller than the wavelength of light. The fringe spacings as small as 1/9 are demonstrated experimentally and periods as small as l/1000 seem to be feasible.

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