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DOUBLE-CLAD OPTICAL FIBERS AND DEVICES WITH DOUBLE-CLAD OPTICAL FIBERS

2025-06-24 13:332900下载
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A double-clad optical fiber includes a core, an inner cladding and an outer cladding of silica-based glass. The core may have a radius of less than about 5μmn, a first index of refraction n1 and does not contain any active rare-earth dopants. The inner cladding may surround the core and includes a radial thickness of at least about 25 μm, a numerical aperture of at least about 0.25, and a second index of refraction n2 such that n2
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