摘要
借助多极法对具有双包层、双孔间距结构光子晶体光纤的色散特性，限制损耗，模场面积进行数值模拟，研究调整内外包层参数对色散和损耗的影响。通过优化结构参数，设计了可以在1．29～1．82μm的波长范围内实现±0．5ps／（km·nm）低色散值的色散平坦光子晶体光纤，其在λ=1．55μm处，限制损耗为2．2×10^-3dB／km，有效模面积达到30μm^2，且其色散对外包层形变不敏感。
By means of multiple method, the dispersion characteristic, confinement loss and mode area of the a double cladding dispersion flattened photonic crystal fiber with double hole-to-hole spacing have been numerically investigated, meanwhile the dependence of dispersion and loss by varying the parameters of inner and outer cladding have been analyzed. By way of optimizing structural parameters, it is possible to design a seven-ring PCF with flattened dispersion of± 0.5ps/（km.nm） from a wavelength of 1.29μm to 1.82p m. The confinement loss is 2.2× 10^-3 dB/km, and the effective mode area can approach to 30μm2, with dispersion being insensitive to the deformation of outer cladding.
出处
《光通信技术》
CSCD
北大核心
2011年第12期21-24,共4页
Optical Communication Technology
基金
河北省自然科学基金项目(批准号:F2010001291)资助
河北省高等学校科学技术研究指导项目(批准号:Z2010336)资助
燕山大学博士基金课题资助
秦皇岛市科学技术研究与发展计划(项目编号:201101A093)资助
关键词
光子晶体光纤
双包层
色散平坦
限制损耗
photonic crystal fiber （PCF）
double cladding
dispersion flattened
confinement loss
