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Optical Engineering

Measuring refractive index profiles of integrated LiNbO3 waveguides
Author(s): Barbara Groebli; Bernard Gisin; Nicolas Gisin; Hugo Zbinden
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Paper 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.

Paper Details

Date Published: 1 August 1995
PDF: 6 pages
Opt. Eng. 34(8) doi: 10.1117/12.200614
Published in: Optical Engineering Volume 34, Issue 8
Show Author Affiliations
Barbara Groebli, Univ. of Geneva (Switzerland)
Bernard Gisin, Univ. of Geneva (Switzerland)
Nicolas Gisin, Univ. de Geneve (Switzerland)
Hugo Zbinden, Univ. of Geneva (Switzerland)

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