论文部分内容阅读
设计了一种新型的八边形纤芯为椭圆的空气孔掺氟的光子晶体光纤。通过全矢量有限元法(FVFEM)和各项异性完美匹配层法(APML)对所设计的光纤进行了仿真研究。数值结果表明所设计的光纤在1.34~1.72μm波段具有0±0.4ps/(nm·km)的超平坦色散,覆盖了S、C和L通信波段,且在同一波长范围处限制损耗低于10-7dB/m,在1.55μm波长处对应的双折射率和非线性系数分别为2.12×10~(-2)和50.67W~(-1)·km~(-1)。所设计的光纤在超连续谱产生、色散补偿、极化保偏等方面具有潜在的应用。
A new kind of fluorine-doped photonic crystal fiber with octagonal core is oval air hole. The designed optical fiber was simulated by the full vector finite element method (FVFEM) and the heterosexual perfect matching layer method (APML). The numerical results show that the designed optical fiber has ultra-flat dispersion of 0 ± 0.4ps / (nm · km) in the 1.34-1.72μm band, covering the S, C and L communication bands and limiting the loss below 10 in the same wavelength range -7dB / m. The corresponding birefringence and nonlinear coefficients at the wavelength of 1.55μm are 2.12 × 10 -2 and 50.67 W -1 · km -1, respectively. The designed fiber has potential applications in supercontinuum generation, dispersion compensation and polarization maintaining.