Investigation of speckle suppression beyond human eye sensitivity by using a passive multimode fiber and a multimode fiber bundle
| Autor: | Yanxin Dai, A. S. Lapchuk, A. A. Kryuchyn, Zichun Le, Qiyong Xu, Ivan V. Gorbov, Zongshen Liu, Yanyu Guo, Zhiyi Lu |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Optical Phenomena Physics::Optics 02 engineering and technology 01 natural sciences 010309 optics Speckle pattern Optics 0103 physical sciences Image Processing Computer-Assisted medicine Fiber bundle Optical Fibers Multi-mode optical fiber business.industry Lasers Astrophysics::Instrumentation and Methods for Astrophysics Numerical Analysis Computer-Assisted Speckle noise Models Theoretical 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Azimuth Computer Science::Graphics medicine.anatomical_structure Bundle Human eye 0210 nano-technology business Sensitivity (electronics) |
| Zdroj: | Optics Express. 28:6820 |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/oe.389367 |
| Popis: | A method of speckle suppression without any active device is expected for pico-projectors. The effectiveness of the passive method of speckle reduction using a single multimode fiber and a multimode fiber bundle was actually measured and theoretically analyzed. The dependences of the speckle contrast and speckle suppression coefficient on the parameters of multimode fiber and projection systems were investigated. Our results shown that the efficiency of speckle suppression was limited because only the radial direction of the objective lens aperture was used. An improvement using both of the radial and azimuthal directions of the objective lens aperture is required. |
| Databáze: | OpenAIRE |
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