7 March 2014 Design of double-cladding large mode area all-solid photonic bandgap fibers
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The single-mode properties of LMA AS-PBGFs have been numerically analyzed. It was shown that the analysis of the losses in single-cladding fibers provides a significantly different picture of the mode confinement with respect to the overlap integral, which is commonly considered when designing active double-clad fibers. Innovative designs, based on a so-called heterostructured cladding, have been considered to enhance HOM suppression, providing a significant improvement with respect to standard AS-PBGFs.
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Enrico Coscelli, Thomas T. Alkeskjold, Annamaria Cucinotta, Stefano Selleri, "Design of double-cladding large mode area all-solid photonic bandgap fibers", Proc. SPIE 8961, Fiber Lasers XI: Technology, Systems, and Applications, 89610F (7 March 2014); doi: 10.1117/12.2036980; https://doi.org/10.1117/12.2036980

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