Investigation of refractive index modifications in CW CO2 laser written planar optical waveguides |
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Authors: | LÇ Özcan Ludvik Martinu |
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Institution: | Department of Engineering Physics, École Polytechnique de Montréal, Montréal, QC, Canada H3C 3A7 |
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Abstract: | This paper presents the measurement of the refractive index profile of buried channel waveguides fabricated by a CW CO2 direct writing technique. A reflectance method is used to assess the refractive index distribution n(x,y) in these structures as it is a key parameter determining the propagation properties of guided wave devices. Beam propagation method (BMP) is used with experimentally determined cross-sectional data and refractive index profile to model the waveguides. The spatial resolution is 1.3 μm and, 5.10−4 for the refractive index. |
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Keywords: | 120 0120 130 0130 310 0310 |
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