Tapered chalcogenide-tellurite hybrid microstructured fiber for mid-infrared supercontinuum generation

    Authors

    P. L. Yang; P. Q. Zhang; S. X. Dai; Y. H. Wu; X. S. Wang; G. M. Tao;Q. H. Nie

    Comments

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    Abbreviated Journal Title

    J. Mod. Opt.

    Keywords

    microstructured fiber; dispersion decreasing; soft-glass; mid-infrared; supercontinuum; PHOTONIC CRYSTAL FIBER; GLASS-FIBERS; MU-M; NONLINEAR PROPERTIES; RAMAN-SCATTERING; FREQUENCY-COMB; OPTICAL-FIBER; AS2S3 FIBER; LASER; DISPERSION; Optics

    Abstract

    Fibers exhibiting flattened and decreasing dispersion are important in nonlinear applications. Such fibers are difficult to design, particularly in soft glass. In this work, we develop a preliminary design of a highly nonlinear tapered hybrid microstructured optical fiber (TH-MOF) with chalcogenide glass core and tellurite glass microstructure cladding. We then numerically studied its dispersion, loss, and nonlinearity-related optical properties under fundamental mode systematically using the infinitesimal method. The designed TH-MOF exhibits low chromatic dispersion that is similar to a convex function with two zero-dispersion wavelengths and decreases with fiber length from 2 to 5 mu m band. The potential use of the TH-MOF in nonlinear applications is demonstrated numerically by a supercontinuum spectrum of 20 dB bandwidth covering 1.96-4.76 mu m generated in 2-cm-long TH-MOF using near 3.25-mu m fs-laser pump.

    Journal Title

    Journal of Modern Optics

    Volume

    62

    Issue/Number

    9

    Publication Date

    1-1-2015

    Document Type

    Article

    Language

    English

    First Page

    729

    Last Page

    737

    WOS Identifier

    WOS:000352795000006

    ISSN

    0950-0340

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