Abstract
We present a compressed hexagonal photonic crystal fiber (CH-PCF) based on a simple structure with ultra-flattened dispersion, high birefringence and nonlinearity. The propagation characteristics are studied accurately by utilizing full vector finite-element method (FEM). Numerical results indicate that the birefringence of 1.59 × 10−2 was obtained with high nonlinear coefficient of 42.58 W−1 km−1(X) and 52.80 W−1 km−1(Y) at an effective wavelength of 1.55 μm. Furthermore, CH-PCF presents an ultra-flattened dispersion with variation of ± 3.4 ps/nm/km(X) and ± 1.6 ps/nm/km(Y) over 1.3 μm to 1.8 μm (0.5 μm bandwidth), respectively. In addition, this circular-hole structure can be fabricated conveniently at most easy compared with complex designs, which is an advantage for practical applications such as dispersion compensation and nonlinear optics application.
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This work has been supported in part by the Youth Project on Basic Research of YanShan University (Grant No. 16LGA011).
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Yu, B., Rui, H. A simple design of highly birefringent and nonlinear photonic crystal fiber with ultra-flattened dispersion. Opt Quant Electron 51, 372 (2019). https://doi.org/10.1007/s11082-019-2091-6
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DOI: https://doi.org/10.1007/s11082-019-2091-6