Fig. 1. Schematic cross-section of HC-ARF

Fig. 2. Three kinds of HC-ARF and the birefringence and loss simulation results. (a) Adding an anti-resonant layer; (d) adding two anti-resonant layers; (g) adding three anti-resonant layers; (b), (c) ,(e), (f) ,(h) ,(i) birefringence and loss

Fig. 3. Optimized results of different parameter. (a) ,(b) Distance between two adjacent tubes in the orthogonal direction; (c), (d) radius of air core; (e), (f) thickness difference of tubes in orthogonal direction

Fig. 4. Normalized electric fields of HE_11x and HE_11y at 1550 nm. Green arrows indicate the electric vectors. (a) HE_11x, (b) HE_11y

Fig. 5. Wavelength-dependent transmission performance and fiber bending performance. (a) Birefringence; (b) loss; (c) dispersion; (d) bending loss