| 陈侃,王晨歌,王金芳,舒晓武.一种中心多孔缺陷的保偏光子晶体光纤[J].光电子激光,2015,26(7):1406~1411 |
| 一种中心多孔缺陷的保偏光子晶体光纤 |
| A type of centered porous-defected polarization maintaining photonic crystal fiber |
| 投稿时间：2015-02-11 |
| DOI： |
| 中文关键词: 光子晶体光纤(PCF) 双折射 多孔缺陷 多元非线性回归拟合 经验方程 |
| 英文关键词:photonic crystal fiber (PCF) birefringence multi-hole defected multi-varia nt nonlinear regress fitting empirical equation |
| 基金项目:上海航天科技创新基金(SAST201449)资助项目 (1.浙江大学 光电科学与工程学院,浙江 杭州 310027； 2.上海航天控制技术研究所,上海市空间智能控制技术重点实验室,上海 201109) |
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| 中文摘要: |
| 探索了全反射型光子晶体光纤(PCF)中空气孔的排列形状和尺寸参 数与双折射之间的关系,通过结构优化设计出一种双折射为3.4×10－3且单模工作的二孔中心缺陷实芯PCF,并采用多元非线性回归拟合的方法得到了这 种PCF双折射的数值经验方程式,为保偏型PCF的研制提供了理论依据。 |
| 英文摘要: |
| In standard fiber transmission systems ,imperfections in the core-cladding interface introduce random birefringence th at leads to light being randomly polarized.These problems with random birefringe nce in polarization maintaining (PM) fibers are overcome by deliberately introdu cing a larger uniform birefringence throughout the fiber.Current PM fibers realized by standard fiber technology include PNDA or bow-tie fibers,which ach ieve this goal by applying stress on the core region of a standard fiber.A modal birefringence up to 5×10－4 may be readily obtained.However, this kind of fibers is so sensitive to the change of environment that the stabil ity of systems can be seriously affected.In the other hand,PM photonic crystal fibers (PCFs) with asymmetric core designs,wh ich offer resistance to the change of environment,may be used to introduce modal birefringence at least one o rder of magnitude larger than that for conventional PM fibers.This paper studies the relationship between the arrangin g shape and size parameters of air holes in total internal reflection (TIR) PCF and the b irefringence.A kind of single-mode two-hole center-defected PCF with a birefringence of 3.4×10－3 is des igned th rough structure optimization. Meanwhile,numerical empirical equation for this kind of PCF is achieved by the method of multi-variant nonlinear regress fitting,which may offer theoretical reference for the manufac ture of PM-PCF in future. |
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