Alexeyev C N, Lapin B P, Yavorsky M A
Opt Lett. 2016 Mar 1;41(5):962-5. doi: 10.1364/OL.41.000962.
We have studied the effect of optical activity (OA) in optical fibers with multihelical distribution of refractive index profiles near the resonance wavelength, at which the conversion of an incident Gaussian beam into an optical vortex (and vice versa) takes place. We have shown that at such a wavelength the polarization vector of the input Gaussian beam rotates within the fiber at an average rate proportional to the difference in propagation constants of left- and right-circularly polarized optical vortices with the same topological charge. We also show that for certain fiber lengths the magnitude of OA can greatly exceed its average level and reach anomalously high values.
我们研究了在共振波长附近具有多螺旋折射率分布的光纤中光学活性（OA）的影响，在该共振波长下，入射高斯光束会转换为光学涡旋（反之亦然）。我们已经表明，在这样的波长下，输入高斯光束的偏振矢量在光纤内以与具有相同拓扑电荷的左旋和右旋圆偏振光学涡旋的传播常数之差成比例的平均速率旋转。我们还表明，对于某些光纤长度，OA的大小可以大大超过其平均水平并达到异常高的值。
