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

• Published in: Optics express Vol. 20; no. 10; p. 10583
• Main Authors: Papadopoulos, Ioannis N., Farahi, Salma, Moser, Christophe, Psaltis, Demetri
• Format: Journal Article
• Language: English
• Published: United States 07.05.2012
• Subjects: Crystallization; Endoscopy - methods; Equipment Design; Fiber Optic Technology; Holography - methods; Lasers; Light; Lighting; Nephelometry and Turbidimetry; Optical Fibers; Optics and Photonics - methods

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 poi...