Poladian L, Straton M, Docherty A, Argyros A
Institute of Photonics and Optical Science (IPOS), School of Mathematics and Statistics, The University of Sydney, NSW, Australia.
Opt Express. 2011 Jan 17;19(2):968-80. doi: 10.1364/OE.19.000968.
We investigate the properties of optical fibres made from chiral materials, in which a contrast in optical activity forms the waveguide, rather than a contrast in the refractive index; we refer to such structures as pure chiral fibres. We present a mathematical formulation for solving the modes of circularly symmetric examples of such fibres and examine the guidance and polarisation properties of pure chiral step-index, Bragg and photonic crystal fibre designs. Their behaviour is shown to differ for left- and right-hand circular polarisation, allowing circular polarisations to be isolated and/or guided by different mechanisms, as well as differing from equivalent non-chiral fibres. The strength of optical activity required in each case is quantified.
我们研究了由手性材料制成的光纤的特性，其中光学活性的差异形成了波导，而不是折射率的差异；我们将这种结构称为纯手性光纤。我们提出了一种数学公式来求解此类光纤的圆对称示例的模式，并研究了纯手性阶跃折射率、布拉格和光子晶体光纤设计的导光和偏振特性。结果表明，它们对于左旋和右旋圆偏振的行为有所不同，这使得圆偏振能够通过不同的机制被分离和/或引导，并且与等效的非手性光纤也有所不同。每种情况下所需的光学活性强度都进行了量化。
