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Single-mode Bragg gratings in tapered few-modes and multimode fibers

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Valencià Castellano

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IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Single-mode Bragg gratings in tapered few-modes and multimode fibers

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Herrera-Piad, Luis A.; Delgado-Pinar, Martina; Cruz Muñoz, José Luis; Carrascosa, A.; Díez Cremades, Antonio; Rojas-Laguna, Roberto; Andrés, Miguel V.

Aquest document és un/a article, creat/da en: 2019

We propose the implementation of fiber Bragg gratings in tapered few-modes, and multimode fibers to accomplish single-mode operation by reducing the core diameter while preserving the core-cladding structure. Gratings present a single reflection band and the device show low insertion losses after the taper fabrication and the fiber Bragg gratings inscription. The excitation of high order odd-modes in the core of the fiber has been identified as the main loss mechanism; it can be prevented by means of symmetric illumination of the fibers. We also demonstrate the excitation of high order cladding modes (cladding-air modes) along the taper transitions; these modes can be removed without a significant increment of the insertion loss.

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