High-Frequency Optical Scanner Based on Bending Vibration of Optical Fiber
High-Frequency Optical Scanner Based on Bending Vibration of Optical Fiber
复制标题
基于光纤弯曲振动的高频光学扫描仪
DOI：
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
S. Ueha
中科院分区：
文献类型：
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作者：
R. Isago;Shunsuke Domae;D. Koyama;Kentaro Nakamura;S. Ueha
本文提出了一种基于振动光纤的高频光学扫描器，其中光纤端部的横向位移和旋转以及由振动在纤芯中产生的应力引起的声光效应提供了大的光束偏转角。首先，在简支梁理论的基础上，描述了利用压电元件激励光纤高频弯曲振动的结构，并讨论了谐振频率与光纤长度之间的关系。然后，介绍了利用振动和球面透镜实现光束偏转的原理。其次，利用几何光学方法估算弯曲光纤的偏转角，并利用光纤的应力分布来模拟声光效应。声光效应是在显微镜下用频闪观察法观察到的。随着大气压力的降低，可能的最大振动位移增大，并在42 kHz的光纤振动和460 Hz的0.5 mm球透镜位移下进行了二维扫描。
In this paper, we present a high-frequency optical scanner based on a vibrating optical fiber where the lateral displacement and rotation of the optical fiber end and the acoustooptic effect due to the stress induced in the fiber core by the vibration provide a large deflection angle of the light beam. First, the configuration used to excite high-frequency bending vibrations on the optical fiber using a piezoelectric element is described, and the relationship between the resonant frequency and the fiber length is reviewed, on the basis of the simple beam theory. Then, the principle of deflecting the light beam with the vibration and a ball lens is presented. Second, the deflection angle is estimated through the geometrical optics for the bending optical fiber, while the acoustooptic effect is simulated using the stress distribution along the optical fiber. The acoustooptic effect is observed by the stroboscope method under a microscope. The possible maximum vibration displacement was increased as the atmospheric pressure was reduced, and two-dimensional (2D) scanning was demonstrated with the fiber vibration at 42 kHz and the 0.5-mm-diameter ball lens displacement at 460 Hz.
影响因子：
3.6
作者：
Zara, JM;Yazdanfar, S;Smith, SW
通讯作者：
Smith, SW