Papadopoulos Ioannis N, Farahi Salma, Moser Christophe, Psaltis Demetri
Laboratory of Optics, School of Engineering, École Polytechnique Fédéral de Lausanne (EPFL), Lausanne Switzerland.
Opt Express. 2012 May 7;20(10):10583-90. doi: 10.1364/OE.20.010583.
We demonstrate for the first time to our knowledge a digital phase conjugation technique for generating a sharp focus point at the end of a multimode optical fiber. A sharp focus with a contrast of 1800 is experimentally obtained at the tip of a 105 μm core multimode fiber. Scanning of the focal point is also demonstrated by digital means. Effects from illumination and fiber bending are addressed.
据我们所知，我们首次展示了一种数字相位共轭技术，用于在多模光纤末端产生一个尖锐的焦点。在一根芯径为105μm的多模光纤末端，通过实验获得了对比度为1800的尖锐焦点。还通过数字手段演示了焦点的扫描。讨论了照明和光纤弯曲的影响。
