Comparison of the N times mode-lines technique to the inverse technique in refractive index profile reconstruction

Michael Gad; Hatem H. ElRefaei; Diaa A. M. Khalil; Omar A. Omar

doi:10.1117/1.2785177

1 September 2007 Comparison of the N times mode-lines technique to the inverse technique in refractive index profile reconstruction

Michael Gad; Hatem H. ElRefaei; Diaa A. M. Khalil; Omar A. Omar;

Author Affiliations +

Optical Engineering, 46(9), 094601 (2007). doi:10.1117/1.2785177

Abstract

A single-mode waveguide is fabricated using ion exchange in a molten bath of KNO₃ salt. The mode effective index is measured using a mode-lines (M-lines) experiment. The waveguide is then etched, and the M-lines experiment is performed again. The two measurements are sufficient for refractive index profile (RIP) reconstruction, which is assumed to be Gaussian. The reconstructed profile is checked using a numerical technique and is then compared to the inverse technique, showing the inverse technique limitations.

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Michael Gad, Hatem H. ElRefaei, Diaa A. M. Khalil, Omar A. Omar, "Comparison of the N times mode-lines technique to the inverse technique in refractive index profile reconstruction," Optical Engineering 46(9), 094601 (1 September 2007). https://doi.org/10.1117/1.2785177

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