Impact of Cladding Tubes in Chalcogenide Negative Curvature Fibers
Open Access
- 7 June 2016
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Journal
- Vol. 8 (3), 1-9
- https://doi.org/10.1109/jphot.2016.2577711
Abstract
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 μm, which gives a leakage loss lower than 0.04 dB/m and a wide transmission bandwidth of 1.1 μm. 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.Keywords
Funding Information
- Vice Provost for Research at Baylor University
- Naval Research Laboratory
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