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Impact of Cladding Tubes in Chalcogenide Negative Curvature Fibers

Photonics Journal, IEEE, 2016, Vol.8, p.1-9

2009-2012 IEEE ;DOI: 10.1109/JPHOT.2016.2577711

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  • Title:
    Impact of Cladding Tubes in Chalcogenide Negative Curvature Fibers
  • Author: Wei, Chengli ; Menyuk, Curtis R ; Hu, Jonathan
  • Subjects: Bandwidth ; Electron tubes ; fiber optics systems ; Glass ; Imaging ; Modeling ; MWIR devices ; Optical losses ; Propagation losses ; Ultraviolet sources ; Waveguides
  • Is Part Of: Photonics Journal, IEEE, 2016, Vol.8, p.1-9
  • Description: We computationally study the leakage loss and bandwidth in chalcogenide negative curvature fibers. The leakage loss is decreased by a factor of 19, and the operating bandwidth is almost doubled when the optimal gap between cladding tubes is used in negative curvature fibers with six tubes. There is a wide range of the gaps between 5 and 40 $\mu\text{m}$, which gives a leakage loss lower than 0.04 dB/m and a wide transmission bandwidth of 1.1 $\mu\text{m}$. The optimal gap in a fiber with six cladding tubes is three times as large as the optimal gap in fibers with eight or ten cladding tubes. A larger gap is needed in a fiber with six cladding tubes to remove the weak coupling between the central core mode and the tube modes. This design of the chalcogenide negative curvature fibers using a wide range of gaps will lead to successful fiber devices with a low loss and a wide bandwidth for mid-IR transmission.
  • Publisher: IEEE
  • Language: English
  • Identifier: DOI: 10.1109/JPHOT.2016.2577711
  • Source: IEEE Open Access Journals
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