A simple design of highly birefringent and nonlinear photonic crystal fiber with ultra-flattened dispersion

  • Bai Yu
  • Hao RuiEmail author


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.


Photonic crystal fiber Ultra-flattened dispersion High birefringence High nonlinearity 



This work has been supported in part by the Youth Project on Basic Research of YanShan University (Grant No. 16LGA011).


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.The Key Laboratory on Microstructural Material Physics of Hebei Province, College of SciencesYanshan UniversityQinhuangdaoPeople’s Republic of China

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