Jocher Christoph, Jauregui Cesar, Voigtländer Christian, Stutzki Fabian, Nolte Stefan, Limpert Jens, Tünnermann Andreas
Friedrich-Schiller-Universität Jena, Institute of Applied Physics, Albert-Einstein-Str. 15, 07745 Jena, Germany.
Opt Express. 2011 Sep 26;19(20):19582-90. doi: 10.1364/OE.19.019582.
We demonstrate a new fiber based concept to filter azimuthally or radially polarized light. This concept is based on the lifting of the modal degeneracy that takes place in high numerical aperture fibers. In such fibers, the radially and azimuthally polarized modes can be spectrally separated using a fiber Bragg grating. As a proof of principle, we filter azimuthally polarized light in a commercially available fiber in which a fiber Bragg grating has been written by a femtosecond pulsed laser.
我们展示了一种基于光纤的新概念，用于滤除方位角偏振光或径向偏振光。这一概念基于高数值孔径光纤中发生的模式简并消除。在这种光纤中，径向偏振模式和方位角偏振模式可以通过光纤布拉格光栅在光谱上分离。作为原理验证，我们在一根市售光纤中滤除方位角偏振光，该光纤中的光纤布拉格光栅是用飞秒脉冲激光写入的。
