Design of photonic crystal fiber with elliptical air-holes to achieve simultaneous high birefringence and nonlinearity Project supported by the National Natural Science Foundation of China (Grant No. 61475029). |
(color online) Birefringence as a function of wavelength for different η with Dx = 0.64Λ, dx = 0.52Λ, and Λ = 0.8 μm. |