New high negative dispersion photonic crystal fiber
New high negative dispersion photonic crystal fiber
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DOI：
10.1016/j.ijleo.2008.09.039
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发表时间：
2010-06
期刊：
影响因子：
3.1
通讯作者：
Ming Chen;Qing Yang;Tian-song Li;Chen Mingsong;Ning He
中科院分区：
文献类型：
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作者：
Ming Chen;Qing Yang;Tian-song Li;Chen Mingsong;Ning He
提出了一种新型的高负色散光子晶体光纤。它具有双核心结构。内芯具有圆形锗掺杂区。外芯通过去除芯周围的第三环气孔形成。在两个纤芯之间有两个环形空气孔，第一个环形空气孔的直径大于第二个环形空气孔的直径，这可以使内模和外模之间产生模式耦合，从而产生高负光子晶体光纤。光子晶体光纤的包层中存在蜂窝状的光子晶格结构。分析了结构参数偏离设计值对色散的影响。当结构参数Λ=1.50μm，dcore=2.10μm，d1=0.90μm，d2=0.44μm，d3=1.04μm时，在1550 nm处的色散系数D为− 1320 ps/（nm·km）。这是一种新型的色散补偿型光子晶体光纤。
A new high negative dispersion photonic crystal fiber is proposed. It has double-core structure. The inner core has a circle germanium-doped region. The outer core is formed by removing the 3rd ring air-holes around the core. There are two ring air-holes between the two cores, Diameter of the 1st ring air holes is bigger than that of the 2nd ring air-holes, this can make mode coupling between inner mode and outer mode and showed that the high negative PCF is the result of this structure characteristics. There are honeycomb photonic lattice in the PCF's cladding. The influence of the structure parameters deviated from the design those on the chromatic dispersion are evaluated. When the structure parameters Λ=1.50μm, dcore=2.10μm, d1=0.90μm, d2=0.44μm and d3=1.04μm, the dispersion coefficient D is −1320ps/(nm·km) at 1550nm. This is a new kind of chromatic dispersion compensation PCF.