光通信研究, 2016 (6): 36, 网络出版: 2016-12-21  

新型双模光子晶体光纤的平坦色散特性分析

Analysis of Flattened-Dispersion Characteristic of a New Type of Double-Mode Photonic Crystal Fiber
作者单位
南京邮电大学 光电工程学院, 南京 210003
摘要
设计了一种具有色散平坦特性的双模PCF(光子晶体光纤), 采用全矢量FEM(有限元法)计算了光纤的模式及色散特性, 分析了光纤结构对色散平坦性的影响。结果表明, 当PCF的孔间距Λ=10 μm, 相对孔径d1/Λ=0.55、d2/Λ=0.65和d3/Λ=0.75时,基模和二阶模的限制损耗均小于1 dB/m, 两种模式的有效折射率差值Δneff >10-3, 实现了稳定的双模传输。在C波段, 色散斜率介于-0.012 36~0.321 91 ps/(nm2·km)之间, 波长1 550 nm处, 基模和二阶模的色散斜率分别为0.093 80和0.038 97 ps/(nm2·km), 实现了C波段的平坦色散。
Abstract
In this paper, a new type of double-mode photonic crystal fiber with flattened-dispersion is designed. The transmission and dispersion properties are simulated by Finite Element Method (FEM).The impacts of the parameters of the PCF on the dispersion properties are analyzed. The results show that the double-mode PCF can gain stable transmission of the two modes when the structural parameters of PCF are Λ=10 μm, d1/Λ=0.55, d2/Λ=0.65, d3/Λ=0.75.The confinement loss of each mode is less than 1 dB/m, and the effective refractive index difference is larger than 10-3.The dispersion slope values ranges from -0.012 36 ps/(nm2·km) to 0.321 91 ps/(nm2·km) in the C band. The dispersion slope value in 1 550 nm of each mode are 0.093 80 ps/(nm2·km)、0.038 97 ps/(nm2·km), which means that the PCF can achieve dispersion-flattened transmission in the wavelength range of communication.

杨静, 施伟华. 新型双模光子晶体光纤的平坦色散特性分析[J]. 光通信研究, 2016, 42(6): 36. YANG Jing, SHI Wei-hua. Analysis of Flattened-Dispersion Characteristic of a New Type of Double-Mode Photonic Crystal Fiber[J]. Study On Optical Communications, 2016, 42(6): 36.

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