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Scientific article
English

Measuring refractive index profiles of integrated LiNbO3 waveguides

Published inOptical Engineering, vol. 34, no. 8, p. 2309-2314
Publication date1995
Abstract

A nondestructive technique that provides near-field measurements as well as refractive index profiles and geometry of waveguides in LiNbO3 within a few minutes is demonstrated. It is a modification of the refracted-near-field (RNF) method well known for optical fiber characterization. Spatial resolution below 1 μm is achieved. The index resolution is about 2 x 10-4, the reproducibility better than 7%. A new calibration method for RNF measurement is introduced.

Citation (ISO format)
GROEBLI, Barbara et al. Measuring refractive index profiles of integrated LiNbO<sub>3</sub> waveguides. In: Optical Engineering, 1995, vol. 34, n° 8, p. 2309–2314. doi: 10.1117/12.200614
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ISSN of the journal0892-354X
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