Wong G K L, Xi X M, Frosz M H, Russell P St J
Opt Lett. 2015 Oct 15;40(20):4639-42. doi: 10.1364/OL.40.004639.
We demonstrate experimentally and theoretically that the core-guided mode in helically twisted photonic crystal fiber exhibits resonantly enhanced optical activity and circular dichroism in the vicinity of anti-crossings with leaky orbital angular momentum (OAM) modes in the cladding. This arises because the anti-crossings for left and right circularly polarized core modes occur at slightly different wavelengths.
我们通过实验和理论证明，螺旋扭曲光子晶体光纤中的纤芯导模在与包层中泄漏轨道角动量（OAM）模式的反交叉附近表现出共振增强的光学活性和圆二色性。这是因为左旋和右旋圆偏振纤芯模式的反交叉发生在略有不同的波长处。
