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arXiv physics/0310149physics.opticscond-mat
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空芯光子带隙光纤包层结构的模拟

Modeling of realistic cladding structures for air-core photonic band-gap fibers

Niels Asger Mortensen, Martin Dybendal Nielsen

摘要:

光子带隙光纤的包层结构通常具有非圆形形状的空气孔,并且通常观察到具有弯曲拐角的接近六边形的空气孔。我们研究了这种结构中的光子带隙的大小和曲率的双参数表示的援助。对于基本的带隙,我们发现,带隙边缘(与空气线的交叉点)移向较短的波长时,空气填充分数f的增加。带隙也变宽,相对带宽随f^2呈指数增长。与最近的实验[Nature 424,657(2003)]相比,我们发现非常好的一致性。

英文摘要:

Cladding structures of photonic band-gap fibers often have air-holes of non-circular shape and, typically, close-to-hexagonal air holes with curved corners are observed. We study photonic band-gaps in such structures by aid of a two-parameter representation of the size and curvature. For the fundamental band-gap we find that the band-gap edges (the intersections with the air line) shift toward shorter wavelengths when the air-filling fraction f is increased. The band-gap also broadens and the relative band-width increases exponentially with f^2. Comparing to recent experiments [Nature 424, 657 (2003)] we find very good agreement.

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