Image quality improvement using speckle method in in-line digital holography by means of multi-mode fiber
Image quality improvement using speckle method in in-line digital holography by means of multi-mode fiber
复制标题
利用多模光纤在线数字全息术中使用散斑方法改善图像质量
DOI：
10.1016/j.optcom.2013.04.061
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发表时间：
2013
影响因子：
2.4
通讯作者：
S. Shimoma and Y. Aizu
中科院分区：
文献类型：
--
作者：
H. Funamizu;S. Shimoma and Y. Aizu
介绍了利用多模光纤在同轴数字全息术中用散斑方法改善像质的方法。在所提出的方法中，我们使用多模光纤发出的散斑场作为参考波和照明物体的波前。散斑参考波和物波的干涉图样以数字全息图的形式记录在CCD相机上。为了在散斑法中捕获多幅全息图，利用振子振动多模光纤来改变散斑场。该方法的优点在于，由于使用光纤，光学系统变得更简单，并且可以通过使用从具有振荡器的多模光纤发射的散斑场来容易地执行散斑方法。
We present image quality improvement using speckle method in an in-line digital holography by means of a multi-mode fiber. In the proposed method, we use the speckle field emitted from the multi-mode fiber as both a reference wave and the wavefront illuminating an object. The interference pattern of a speckled reference wave and an object wave is recorded as digital holograms on a CCD camera. To capture multiple holograms in speckle method, speckle fields are changed by vibrating the multi-mode fiber using a vibrator. This method has the advantages in that an optical system becomes simpler due to the use of an optical fiber and speckle method can be readily performed by using speckle fields emitted from the multi-mode fiber with a vibrator.