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Yb3+ doped gain guided index anti-guided fiber based on the nanoporous silica glass rod.

07:00 EST 14th January 2020 | BioPortfolio

Summary of "Yb3+ doped gain guided index anti-guided fiber based on the nanoporous silica glass rod."

We report a heavily Yb3+/Al3+/B3+/F- co-doped high silica rod with a negative refractive index relative to pure silica. The high silica rod was fabricated from nanoporous silica rod by the glass phase-separation technology. For lowering the refractive index, B3+ and F- were simultaneously introduced into the silica rod. The optical properties of the silica rod were investigated. The fiber preform was prepared by the rod-in-tube method by which the Yb3+ doped high silica rod was only used as an active core. The fiber has a core diameter of 80 μm and a cladding diameter of 400 μm. The measurements show that the Yb3+ in the high silica fiber core is 15856 ppm by weight, while the refractive index is 0.0024 lower than that of the inner cladding. The amplification performance of the fiber was investigated. It is indicated that the nanoporous silica glass based on the glass phase-separation technology has a great potential for gain-guided index anti-guided high silica fiber.

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Name: Nanotechnology
ISSN: 1361-6528
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