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Optical Filter Utilizing the Directional Coupler Composed of the K-and Ag-ion Exchange Waveguides

Kiyoshi KISHIOKA, Kazuya YAMAMOTO

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This paper describes a narrow pass-band optical filter utilizing a wavelength-sensitive power-transfer characteristic in the directional coupler composed of the K-and Ag-ion exchange waveguides which have greatly different dispersion relations caused by the large mismatch in the index profile of the waveguide cross-section. A narrow pass-band width of about 7 nm is measured in the filter fabricated in the soda-lime glass substrate. The fabrication technique with two-step ion-exchange of the K-and Ag-ions, is also presented together with a quick design method.

Publication
IEICE TRANSACTIONS on Electronics Vol.E79-C No.10 pp.1405-1412
Publication Date
1996/10/25
Publicized
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DOI
Type of Manuscript
Special Section PAPER (Special Issue on Electromagnetic Theory-Foundations and Applications)
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