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An Optical Scanner Based on Electromagnetically Actuated Optical Fiber

机译：基于电磁驱动光纤的光学扫描仪

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To meet the performance requirements for some applications, including small sizes, precise optics, low power consumption and non-electrical control in the devices, an optical fiber scanner using electromagnetic actuation has been developed. This paper acquaints a compact external magnetic field actuated fiber optic scanner, in which the main structure is an optical fiber coated with nickel magnetic gel. The advantages of device architecture are: (1) the scanner dimensions are in the same scales of an optical fiber diameter, (2) optical properties and information are well preserved in the fiber, and (3) the actuation control is external and requires no electrical wiring in scanner design and zero power consumption. In this work, magnetic properties of the nickel based ferromagnetic gel were measured hi order to carry out the theoretical calculations of static response and resonant frequencies. With the dynamic waveforms of input and output signals from the position sensing device at both modes of resonant frequencies, we conclude that it is significant to operate at the resonant frequencies so that the scanner requires less power to reach large displacement and the oscillating motion of the scanner is purely sinusoidal. A simple and versatile rotary gel coating technique, static and dynamic performance characterization and potential applications of the fiber scanner will be discussed. Moreover, we will also discuss the practical issues in operation and possible waveform distortion that affects imaging and display quality.
机译：为了满足某些应用的性能要求，包括小尺寸，精确的光学器件，低功耗和设备中的非电气控制，已经开发了使用电磁驱动的光纤扫描仪。本文介绍了一种紧凑的外部磁场驱动的光纤扫描仪，其中的主要结构是涂覆有镍磁凝胶的光纤。设备架构的优点是：（1）扫描仪的尺寸与光纤直径相同，（2）光纤中的光学特性和信息得到很好的保存，并且（3）致动控制是外部的，不需要扫描仪设计中的电气布线，零功耗。在这项工作中，对镍基铁磁凝胶的磁性进行了测量，以进行静态响应和共振频率的理论计算。利用来自位置感测设备在共振频率的两种模式下的输入和输出信号的动态波形，我们得出结论，在共振频率下工作非常重要，因此扫描仪需要较少的功率来达到较大的位移和振动的振荡运动。扫描仪是纯正弦的。将讨论一种简单而通用的旋转凝胶涂层技术，静态和动态性能表征以及光纤扫描仪的潜在应用。此外，我们还将讨论操作中的实际问题以及可能影响成像和显示质量的波形失真。

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