Lab 6 - Demo Lab 6 Katie Bredice Wednesday Section Henry...

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Demo Lab 6 Katie Bredice Wednesday Section Henry Wen Fiber Optics Lab 28 November 2007
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n 1 sin q 1 = n 2 sin q 2 sin q 2 = n 1 n 2 sin q 1 1 In this lab we lab we explored some of the basic properties of optical fibers. These properties include its modal properties, numerical aperture, coupling efficiencies, and polarization. The basic design of a step-index fiber consists of a core region that has been doped with germanium such that its refractive index is slightly higher than the surrounding cladding region. As a result, light can propagate in the core region over extremely long distances without diffracting out of the core. Surrounding the cladding region over extremely long distances without diffracting the core. Surrounding the cladding region is a plastic coating that protects the fiber. If n 1 (the core index of refracting) >> n 2 (the cladding index of refraction) we get total internal refection which we don’t want (Snell’s Law). In this lab, single mode fibers were demonstrated first. Many properties of single mode fibers were
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Lab 6 - Demo Lab 6 Katie Bredice Wednesday Section Henry...

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