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Design and Analysis of Elliptical Core Spiral Silica Photonic Crystal Fiber with Improved Optical Characteristics

机译:光学特性得到改善的椭圆芯螺旋二氧化硅光子晶体光纤的设计与分析

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The aim of this paper is to attempt an optimized design from spiral horizontal and vertical core slotted silica photonic crystal fiber through which we can get low dispersion profile, low confinement loss and better transmission curve in both the slotted spiral silica PCF structures. For this purpose we have used opti Finite difference time domain (FDTD) (Liao et al. in EEE Photon Technol Lett. https://doi.org/10.1109/LPT.2015.2443986, [9], Bottacini et al. in J Lightwave Technol 22(7), 10]) with transparent boundary conditions (TBC) (Sinha et al. in IEEE J Sel Top Quantum Electron 22(2), [7], Zhang et al. in Opt Lett 35:3829-3831, [8], Liao et al. in IEEE Photon Technol Lett. https://doi.org/10.1109/LPT.2015.2443986, [9], Bottacini et al. in J Lightwave Technol 22(7), [10], Toulouse in J Lightwave Technol 23(11), [11]). In this design initially the core region is selected in horizontal elliptical shape, while the cladding part is maintained in circular shape. Later on the elliptically core is converted into vertical direction keeping the cladding region in circular shape. The core diameter is maintained at 0.25 and 0.5 μm with minor and major axes, while the cladding diameter varied from 0.5 to 1.25 μm. The design so obtained faced many conflictions but after setting the parameters in proper manner, it is ready for getting the optimized results and it also maintained the refractive index (Birks et al. in Opt Lett 22(13):961-963, [1], Liao et al. in IEEE Photon Technol Lett 26(4), [2], Rabiul Hasan et al. in IEEE Photon Technol Lett. https://doi.org/10.1109/LPT.2016.2572141, [3]) of the silica at 1.457.
机译:本文的目的是尝试从螺旋水平和垂直纤芯开槽二氧化硅光子晶体光纤进行优化设计,通过该设计,我们可以在开槽螺旋二氧化硅PCF结构中获得低色散分布,低限制损耗和更好的传输曲线。为此,我们使用了时域优化有限时域(FDTD)(Liao等人在EEE Photon Technol Lett。https://doi.org/10.1109/LPT.2015.2443986,[9],Bottacini等人在J Lightwave中Technol 22(7),10])具有透明边界条件(TBC)(Sinha等人,在IEEE J Sel Top Quantum Electron电子22(2),[7]中,Zhang等人,在Opt Lett 35:3829-3831中, [8],Liao等人在IEEE Photon Technol Lett。https://doi.org/10.1109/LPT.2015.2443986,[9],Bottacini等人在J Lightwave Technol 22(7),[10]中,图卢兹在J Lightwave Technol 23(11),[11]中)。在该设计中,最初将芯区域选择为水平椭圆形,而将包层部分保持为圆形。稍后,将椭圆形芯转换为垂直方向,使包层区域保持圆形。纤芯直径在短轴和长轴上保持在0.25和0.5μm,而包层直径在0.5到1.25μm之间变化。这样获得的设计面临许多冲突,但是在以适当的方式设置参数之后,它准备好获得最佳结果,并且还保持了折射率(Birks等人在Opt Lett 22(13):961-963,[1 ],Liao等人在IEEE Photon Technol Lett 26(4),[2]中,Rabiul Hasan等人在IEEE Photon Technol Lett。https://doi.org/10.1109/LPT.2016.2572141,[3])二氧化硅为1.457。

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