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Abstract

In this paper, using the self-made Ge20Sb15Se65 chalcogenide glass as matrix material, we design an infrared octagon dispersion flattened photonic crystal fiber, and the mid-IR dispersion and transmission characteristics are numerically studied using the multipole method. Results show that when we control the duty ratio (d/Λ) in 0.323–0.367, the dispersion and transmission properties in the 3–5 μm range are adjustable. When we set the hole spacing Λ=3.4 μm, hole diameter d=1.1 μm, in the 4.1–4.9 μm band, the fiber dispersion fluctuates between-0.8 ps·nm-1·km-1 and 0.8 ps·nm-1·km-1, and shows single-mode transmission, low loss (LossAeff2) characteristics, thus it is suitable for nonlinear applications in mid-IR band.

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1.
Funds:Project supported by the 973 Program sub-project(Grant No. 2012CB722703), the National Natural Science Foundation of China (Grant Nos. 61177087, 61377099, 61307060), the Program for New Century Excellent Talents in University of China (Grant No.NCET-10-0976), the Zhejiang Provincial Natural Science Foundation of China (Grant No. LQ12F05004), the Program for Innovative Research team of Ningbo City, China (Grant No. 2009B21007), and the Ningbo University Wang Kuancheng happy fund.

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Vol. 63, Issue 1 - 2014-01-05

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