Output grating couplers on planar wavegu
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W. Lukosz; Ph. M. Nellen; Ch. Stamm; P. Weiss
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Article
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1990
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Elsevier Science
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English
โ 375 KB
We have demonstrated that output grating couplers on thin Si02-TiOz waveguides are sensors which respond (i) with sub-monomolecular sensitivity to the adsorption of molecules out of a gaseous or liquid sample covering the waveguide in the grating region, and (ii) to changes in the refractive index o