The high birefringence photonic crystal fiber exhibits strong linear polarization maintenance capability. A unique structure of high birefringence photonic crystal fiber has been designed using multi-component laser glass materials as the core. Finite element method combined with perfect boundary conditions was employed to determine the birefringence co-efficients of this photonic crystal fiber at wavelengths of 1.55 μm and 1.80 μm ,resulting in values of 5.207×10-2 and 6.882× 10-2 ,respectively. At a wavelength of 1.55 μm ,the confinement losses in the X and Y polarization directions are 1.386× 10-5 dB/km and 5.386×10-7 dB/km ,respectively. The nonlinear coefficients indicate that for photonic crystal fibers with structural parameters M(D/Λ) equal to 0.7 and 0.8 ,the nonlinear coefficients in the X and Y polarization directions range between 4.374×103 km-1 · W-1 to 4.906×103 km-1 · W-1 and 5.621×103 km-1 · W-1 to 6.978×103 km-1 · W-1 ,respectively. The unique structure and excellent performance characteristics of the high birefringence photonic crystal fiber designed in this study provide new solutions for applications in fields such as optical communication and optical sensing.
关键词
高双折射/低限制性损耗/高非线性/光子晶体光纤/有限元法
Key words
high birefringence/low limiting loss/high nonlinearity/photonic crystal fiber/finite element method
维普
万方数据