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Investigation of a UV-laser generated waveguide in a planar polymer chip using an improved interferometric method |
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| Authors: | MA Shams El-Din M KoerdtC Wochnowski F VollertsenAM Sadik |
| Institution: | a Physics Department, Faculty of Science, University of Mansoura, New Damietta, Egypt b BIAS (Bremer Institut für Angewandte Strahltechnik), Bremen, Germany c Faculty of Science for Girls, Abha, King Khalid University, Kingdom of Saudi Arabia d Optical Research Group, Physics Department, Faculty of Science, University of Mansoura, 35516, Mansoura-Egypt |
| Abstract: | Polymeric integrated-optical waveguides are prepared in a planar polymer chip by UV-laser lithographic methods. The waveguide samples are irradiated by an excimer laser at a wavelength Λ=248 nm with various irradiation parameters (different fluencies and irradiation doses). Mach-Zehnder interferometer is employed and the refractive index depth profiles of the waveguide samples are obtained. This profile covers two regions having exponential and Gaussian shapes. The model field distributions strongly depend on the refractive index of each region. The mode field distribution and the effective mode indices for each region have been calculated on the basis of a theoretical model and the experimentally measured data. |
| Keywords: | Polymer integrated optics Refractive index depth profile Mach-Zehnder interferometry Mode field distribution Bessel-function |
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