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Optical Engineering

Comparison of the N times mode-lines technique to the inverse technique in refractive index profile reconstruction
Author(s): Michael Gad; Hatem H. ElRefaei; Diaa A. M. Khalil; Omar A. Omar
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Paper 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.

Paper Details

Date Published: 1 September 2007
PDF: 8 pages
Opt. Eng. 46(9) 094601 doi: 10.1117/1.2785177
Published in: Optical Engineering Volume 46, Issue 9
Show Author Affiliations
Michael Gad
Hatem H. ElRefaei, Ain Shams Univ. (Egypt)
Diaa A. M. Khalil, Ain Shams Univ. (United States)
Omar A. Omar, Ain Shams Univ. (Egypt)

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