quadruply-clad fiber

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Quadruply clad fiber — In fiber optics, a quadruply clad fiber is a single mode optical fiber that has four claddings. Each cladding has a refractive index lower than that of the core. With respect to one another, their relative refractive indices are, in order of… … Wikipedia
Zero-dispersion wavelength — In a single mode optical fiber, the zero dispersion wavelength is the wavelength or wavelengths at which material dispersion and waveguide dispersion cancel one another. In all silica based optical fibers, minimum material dispersion occurs… … Wikipedia

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