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10 February 1981 Numerical Study Of The Coupling Of Two Guided-Waves By A Grating With Varying Period
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Abstract
In Integrated Optics, the coupling of one mode propagating into a multimode slab waveguide to a single mode slab waveguide can be achieved by the use of a grating with varying period. A method to compute the coupling efficiency of the grating is proposed here. The fir t step is based on the differential formalism of diffraction and gives phenomenological coefficients characterizing the grating. Then an adiabatic approximation is used to take into account the variations of the grating period and the coupling coefficient is found by the numerical integration of a set of two coupled differential equations along the length of the device.
© (1981) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Patrick Vincent "Numerical Study Of The Coupling Of Two Guided-Waves By A Grating With Varying Period", Proc. SPIE 0240, Periodic Structures, Gratings, Moire Patterns, and Diffraction Phenomena I, (10 February 1981); https://doi.org/10.1117/12.965643
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