1 August 1995 Measuring refractive index profiles of integrated LiNbO3 waveguides
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Optical Engineering, 34(8), (1995). doi:10.1117/12.200614
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.
Barbara Groebli, Bernard Gisin, Nicolas Gisin, Hugo Zbinden, "Measuring refractive index profiles of integrated LiNbO3 waveguides," Optical Engineering 34(8), (1 August 1995). https://doi.org/10.1117/12.200614
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