Consider a dielectric slab waveguide which has a thin GaAs layer of thickness 0.2 μm between two AlGaAs layers. The refractive index of GaAs is 3.66 and that of the AlGaAs layers is 3.40. What is the cutoff wavelength beyond which only a single mode can propagate inside the waveguide, assuming that the refractive index does not vary greatly with the wavelength?
Consider a dielectric slab waveguide which has a thin GaAs …
May 1, 2023
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