| 单根多模光纤数字扫描成像方法 |
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| 引用本文： | 刘国栋,尹哲,刘炳国,卢丙辉,魏富鹏,庄志涛,甘雨,陈凤东,张大权.单根多模光纤数字扫描成像方法[J].红外与激光工程,2017,46(4):422002-0422002(6). |
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| 作者姓名： | 刘国栋 尹哲 刘炳国 卢丙辉 魏富鹏 庄志涛 甘雨 陈凤东 张大权 |
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| 作者单位： | 1.哈尔滨工业大学 电气工程及自动化学院,黑龙江 哈尔滨 150001; |
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| 基金项目： | 国家自然科学基金（51275120） |
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| 摘 要： | 针对现有多模光纤数字扫描成像方法，形成扫描聚焦光斑计算量大、速度慢的问题，提出了一种基于自适应并行坐标（Adaptive Parallel Coordinate，APC）算法的单根多模光纤数字扫描成像方法，通过控制多模光纤输入端的光场，在单根多模光纤出射端实现光斑的聚焦和扫描。建立了单根多模光纤数字扫描成像数学模型；采用自适应并行坐标算法对空间光调制器（Spatial Light Modulator，SLM）加载相位进行优化，有效缩短了扫描聚焦光斑的形成时间，提高了成像速度。实际生成3030个聚焦光斑，对50 m50 m范围的分辨率板进行扫描成像。实验证明，该方法实现了单根多模光纤对距离光纤端面60 m处平面内的目标成像，分辨率达到2.46 m。
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| 关 键 词： | 自适应并行坐标算法 多模光纤 数字扫描成像 空间光调制器 |
| 收稿时间： | 2016-08-05 |
Single multi-mode fiber digital scanning imaging method |
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| Affiliation: | 1.School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China;2.School of Automation and Electrical Engineering,Shenyang Ligong University,Shenyang 110159,China |
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| Abstract: | For the problem of large computation and slow speed to generate the focused spots in the multimode fiber digital scanning imaging method, the digital scanning imaging method with a single multi-mode fiber (MMF) was proposed based on adaptive parallel coordinate(APC) algorithm. By controlling the input field of the MMF, the focused spots were formed. The theoretical imaging model of single MMF digital scanning was established. APC algorithm was adopted to optimize the phase on the spatial light modulator(SLM), which can effectively reduce the time to form focused spots and improve the imaging speed. 3030 focused spots were formed to sample the resolution target in 50 m50 m region. The experiment demonstrates that the object on the sample plane 60 m far from the MMF output end can be reconstructed. The resolution is 2.46 m. |
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