Abstract
We propose a novel photonic quasi-crystal fiber (PQF) with a near-zero flattened dispersion in the 1450–1650nm optical telecommunication window. A 10-fold quasi-crystal lattice of holes is used to constitute the double clads. Using a full-vectorial finite element method, we analyze the relationship between the dispersion properties of the optical fiber and the structure parameters of cross section. According to the numerical simulation results, in 1450–1650nm optical telecommunication window, the dispersion of the PQF can be kept within (−0.25±0.31)ps/(nmkm) and there are dual zero dispersion wavelengths, while the confinement loss is limited to less than 0.04dB/km. Meanwhile, in this work it is demonstrated numerically that little variation in the fabricated affects moderately the figure of merits such as dispersion or confinement loss. Our structure and optical properties predictions are expected to provide valuable reference and basic data to aid in relative experiments and fabrication.
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