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Scientific article
English

New optical configuration for nondestructive measurements of refractive index profiles of LiNbO3 waveguides

Published inApplied Optics, vol. 33, no. 9, p. 1726-1731
Publication date1994
Abstract

A direct and nondestructive measurement technique for the determination of the refractive index profiles of one- and two-dimensional LiNbO3 waveguides is presented for the first time to our knowledge. The technique generalizes the refracted near-field method, which is well known for optical fiber characterization. The spatial resolution and accuracy are 0.1 and 0.4 μm, respectively. The refractive-index calibration is done by an analysis of the near-field light power distribution, and its resolution is approximately 2 × 10−4. The proposed experimental setup permits sample installation and data acquisition in a few minutes.

Citation (ISO format)
GISIN, Nicolas et al. New optical configuration for nondestructive measurements of refractive index profiles of LiNbO<sub>3</sub> waveguides. In: Applied Optics, 1994, vol. 33, n° 9, p. 1726–1731. doi: 10.1364/AO.33.001726
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ISSN of the journal0003-6935
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