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Opt Express. 2012 May 7;20(10):10583-90. doi: 10.1364/OE.20.010583.

Focusing and scanning light through a multimode optical fiber using digital phase conjugation.

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Laboratory of Optics, School of Engineering, École Polytechnique Fédéral de Lausanne (EPFL), Lausanne Switzerland.


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.

[Indexed for MEDLINE]

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