Dispersion compensation waveguide
A technology of dispersion compensation and compensation wave, applied in the directions of optical waveguides, light guides, instruments, etc., can solve the problems of uneven color ratio, affecting the image imaging effect, etc.
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[0047] Such as image 3 As shown, the light rays a, b, and c transmitted in the waveguide are red light with a wavelength of 650nm, green light with a wavelength of 550nm, and blue light with a wavelength of 450nm. The central waveguide 11 and the compensation waveguides 121 and 122 use titanium oxide, silicon nitride, and aluminum oxide with refractive indices of 2.30, 2.00, and 1.70, respectively. Red light, green light, and blue light enter the central waveguide 11 at incident angles of 65°, 55°, and 45°, respectively.
[0048] At the interface between the central waveguide 11 and the compensation waveguide 121, the critical angle at which total reflection occurs: Then the red light satisfies the total reflection condition, and total reflection occurs at point A; the green light and blue light do not satisfy the total reflection condition, and are transmitted from the central waveguide into the compensation waveguide 121 in the dispersion compensation unit. The angle of r...
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