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Common-Path Endoscopic Fourier Domain OCT with a Reference Michelson Interferometer

机译:带有参考迈克尔逊干涉仪的共路径内窥镜傅里叶域OCT

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摘要

A common-path Fourier-domain OCT for endoscopic imaging, which uses the distal-end surface of the fiber as a self-aligned reference mirror, is reported. A miniaturized probe is designed for this OCT system. A reference Michelson interferometer is used to compensate for the optical path difference and mismatch of dispersion and polarization states due to the miniaturized probe. This configuration allows arbitrary probe fiber length and provides sufficient working space for imaging optics and their package, and thus is suitable for OCT imaging of lumens of various sizes. Additionally, the reference intensity is able to be tuned by index match oil to optimize the signal to noise ratio of the system. Due to this common-path configuration, the OCT signal is immune to the bending or handling of the fiber connecting with the probe.
机译:据报道,用于内窥镜成像的共路径傅里叶域OCT使用光纤的远端表面作为自对准参考镜。为此OCT系统设计了一个微型探头。参考迈克尔逊干涉仪用于补偿光程差以及由于探头小型化而引起的色散和偏振态不匹配。这种配置允许任意的探针光纤长度,并为成像光学器件及其封装提供了足够的工作空间,因此适合于各种尺寸的腔的OCT成像。另外,参考强度能够通过折射率匹配油进行调整,以优化系统的信噪比。由于这种公共路径配置,OCT信号不受与探头连接的光纤弯曲或处理的影响。

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