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An optical waveguide is a physical structure that guides electromagnetic waves in the optical spectrum. Common types of optical waveguides include optical fiber waveguides, transparent dielectric waveguides made of plastic and glass, liquid light guides, and liquid waveguides.
Two-dimensional waveguide, Total internal reflection & Dielectric slab waveguide
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waveguides waveguide optical light glass used slab dielectric index fiber laser refractive material also strip modes guided optics transparent medium
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