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18 April 2006Exact solution to diffraction on a grating with parallelogramic grooves by the true modal method
The formalism of the True Modal Method up to now written for diffraction gratings with a rectangular profile is extended to 1D-periodic structures with parallelogramic grooves. An appropriate coordinate transformation is proposed in order to express analytically in a simple form the modes propagating in the grating region. Numerical examples of calculation of the propagation constants of the eigenmodes of the grating and of the total diffraction efficiency of lamellar parallelogramic structures are given and results are compared with those obtained by other methods.
M. Foresti andA. V. Tishchenko
"Exact solution to diffraction on a grating with parallelogramic grooves by the true modal method", Proc. SPIE 6182, Photonic Crystal Materials and Devices III (i.e. V), 61821G (18 April 2006); https://doi.org/10.1117/12.668476
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M. Foresti, A. V. Tishchenko, "Exact solution to diffraction on a grating with parallelogramic grooves by the true modal method," Proc. SPIE 6182, Photonic Crystal Materials and Devices III (i.e. V), 61821G (18 April 2006); https://doi.org/10.1117/12.668476