Design of a Novel Mid-Infrared Single-Polarization Single-Mode Photonic Crystal Fiber with Low Loss,High Nonlinearity,and Large Bandwidth |
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| Authors: | Zhanqiang Hui Dongyang Hou Youkun Zhang Shixiu Wei Junhua Xu |
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| Affiliation: | 1. Department of photoelectronics technology, Xi’an University of Posts and Telecommunications, Xi’an, Chinazhanqianghui@xupt.edu.cn;3. Department of photoelectronics technology, Xi’an University of Posts and Telecommunications, Xi’an, China |
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| Abstract: | ABSTRACTA novel mid-infrared Ge20Sb15Se65 chalcogenide-based single-polarization single-mode (SPSM) photonic crystal fiber (PCF) with rectangular latticed circular air holes is proposed. The properties of SPSM bandwidth, confinement loss, and nonlinearity are analyzed in the 3 μm~8 μm mid-infrared region using the finite -difference time-domain (FDTD) method. The influences of different geometrical parameters on the properties of SPSM-PCF are analyzed. All numerical computational results reveal that for the optimized geometrical parameters, the proposed PCF can deliver a SPSM region of more than 2.3814 μm with high nonlinearity of 3,705 w?1 km?1. Therefore, such a SPSM-PCF will become an excellent candidate for mid-infrared photonic. |
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| Keywords: | Mid-infrared single-polarization single-mode fiber photonic crystal fiber confinement loss nonlinearity |
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