• Acta Optica Sinica
  • Vol. 38, Issue 9, 0911004 (2018)
Guangzhi Zhao1,2,*, Yi Geng1,2, Hui Chen1,2, Chengfang Xu1,2..., Bin Zhuang1,2, Zhengquan He1, Baowen Hu1 and Liyong Ren1,*|Show fewer author(s)
Author Affiliations
  • 1 Research Department of Information Photonics, Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China
  • 2 College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences,Beijing 100049, China
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    DOI: 10.3788/AOS201838.0911004 Cite this Article Set citation alerts
    Guangzhi Zhao, Yi Geng, Hui Chen, Chengfang Xu, Bin Zhuang, Zhengquan He, Baowen Hu, Liyong Ren. A Method for Focusing and Scanning Light Through Multimode Fiber Based on Binary Amplitude Modulation DMD Technique[J]. Acta Optica Sinica, 2018, 38(9): 0911004 Copy Citation Text show less
    Focusing and scanning light through a multimode fiber based on binary amplitude modulation DMD technique.(a) A plane wave is focused at the proximal end of a MMF, while a random speckle pattern is usually obtained at the distal end of it; (b) wavefront of the incident light is shaped,so that the scattered light through a MMF focuses at a target area; (c) process of the binary amplitude modulation
    Fig. 1. Focusing and scanning light through a multimode fiber based on binary amplitude modulation DMD technique.(a) A plane wave is focused at the proximal end of a MMF, while a random speckle pattern is usually obtained at the distal end of it; (b) wavefront of the incident light is shaped,so that the scattered light through a MMF focuses at a target area; (c) process of the binary amplitude modulation
    Experimental setup
    Fig. 2. Experimental setup
    Focused scanning experiment. (a) A random speckle pattern is obtained at the distal end of the MMF before modulating the incident wavefront; (b) nine focused spots are generated at nine different locations by binary amplitude modulation DMD technique; (c) focusing and scanning light through MMF at three focused planes along the axial direction
    Fig. 3. Focused scanning experiment. (a) A random speckle pattern is obtained at the distal end of the MMF before modulating the incident wavefront; (b) nine focused spots are generated at nine different locations by binary amplitude modulation DMD technique; (c) focusing and scanning light through MMF at three focused planes along the axial direction
    Diameter and focusing efficiency of the focused spots
    Fig. 4. Diameter and focusing efficiency of the focused spots
    Experimental results. (a) Variation of focusing efficiency with amplitude modulation coefficient; (b) variation of focusing efficiency with the number of sub-regions determined
    Fig. 5. Experimental results. (a) Variation of focusing efficiency with amplitude modulation coefficient; (b) variation of focusing efficiency with the number of sub-regions determined
    Guangzhi Zhao, Yi Geng, Hui Chen, Chengfang Xu, Bin Zhuang, Zhengquan He, Baowen Hu, Liyong Ren. A Method for Focusing and Scanning Light Through Multimode Fiber Based on Binary Amplitude Modulation DMD Technique[J]. Acta Optica Sinica, 2018, 38(9): 0911004
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