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首页> 外文期刊>Optical engineering >Common-path all-fiber optical coherence tomography probe based on high-index elliptical epoxy-lensed fiber
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Common-path all-fiber optical coherence tomography probe based on high-index elliptical epoxy-lensed fiber

机译：基于高折射率椭圆环氧透镜光纤的共径全光纤相干层析成像探头

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摘要

We propose and demonstrate high-index elliptical epoxy-lensed fiber probes designed specifically for endoscopic common-path (CP) swept-source optical coherence tomography (OCT) imaging inside wet tissues. The high-index epoxy lens uses a beam expansion region of a few hundred microns, which is capped with a spherical surface mounted at the end of an optical fiber. The probe is designed to operate inside wet tissues and shows improved performance over a long imaging depth, compared to bare or simple half-ball-lensed fiber probes. It allows optimal CP-OCT imaging in wet tissues by providing a stable reference power level and optimal beam waist for a long imaging depth. We have fabricated an array of these probes and one with a beam expansion region length of 288 and with a lens surface radius of 61 exhibiting 25-dB signal-to-noise ratio improvement compared to a bare fiber probe at 1.5-mm distance in water. The proposed probe is tested using a phantom sample comprising several layers of tape in water. The OCT images show that the probe is capable of high-resolution imaging over a distance of 1.5 mm.
机译：我们提出并演示了高折射率椭圆形环氧透镜光纤探头，该探头专为湿组织内部的内窥镜共通（CP）扫描源光学相干断层扫描（OCT）成像而设计。高折射率环氧透镜使用几百微米的光束扩展区域，该区域用安装在光纤末端的球形表面覆盖。与裸露或简单的半球形透镜光纤探头相比，该探头设计用于在潮湿的组织内部工作，并在较长的成像深度上显示出更高的性能。通过提供稳定的参考功率水平和最佳的束腰以实现长成像深度，它可以在湿组织中实现最佳CP-OCT成像。我们制造了这些探头的阵列，其中一个探头的光束扩展区域长度为288，透镜表面半径为61，与水中1.5 mm距离的裸光纤探头相比，具有25 dB的信噪比改善。 。所提出的探针是使用幻像样品进行测试的，该幻像样品在水中包含多层胶带。 OCT图像显示该探头能够在1.5毫米的距离上进行高分辨率成像。

著录项

  • 来源
    《Optical engineering》 |2019年第2期|026116.1-026116.5|共5页
  • 作者

    Soohyun Lee; Changho Lee; Ruben Verkade; Gyeong Woo Cheon; Jin U. Kang;

  • 作者单位

    Johns Hopkins University, Department of Electrical and Computer Engineering, Baltimore, Maryland, United States;

    Chonnam National University Medical School and Hwasun Hospital, Department of Nuclear Medicine, Hwasun, Republic of Korea;

    Eindhoven University of Technology, Department of Mechanical Engineering, Eindhoven, The Netherlands;

    Johns Hopkins University, Department of Electrical and Computer Engineering, Baltimore, Maryland, United States;

    Johns Hopkins University, Department of Electrical and Computer Engineering, Baltimore, Maryland, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    optical coherence tomography; lenses; fiber optic application; imaging system;

    机译：光学相干断层扫描;镜片;光纤应用;成像系统;

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