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首页> 外文会议>Optical fibers and sensors for medical diagnostics and treatment applications XVI >Towards mid-infrared fiber-optic devices and systems for sensing, mapping and imaging
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Towards mid-infrared fiber-optic devices and systems for sensing, mapping and imaging

机译：迈向用于感应，测绘和成像的中红外光纤设备和系统

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摘要

Novel chalcogenide glass-based fiber opens up the mid-infrared (MIR) range for real-time monitoring and control in medical diagnostics and chemical processing. Fibers with long wavelength cut-off are of interest here. Sulfide, selenide and telluride based chalcogenide glass are candidates, but there are differences in their glass forming region, thermal stability and in the short and long wavelength cut-off positions. In general sulfide and selenide glasses have greater glass stability, but shorter long-wavelength cut-off edge, compared to telluride glasses; selenide-telluride glasses are a good compromise. Low optical loss selenide-telluride based long wavelength fibers could play a substantial role in improving medical diagnostic systems, chemical sensing, and processing, and in security and agriculture. For biological tissue, the molecular finger print lies between ～3-15 μm wavelengths in the MIR region. Using MIR spectral mapping, information about diseased tissue may be obtained with improved accuracy and in vivo using bright broadband MIR super-continuum generation (SCG) fiber sources and low optical loss fiber for routing. The Ge-As-Se-Te chalcogenide glass system is a potential candidate for both MIR SCG and passive-routing fiber, with good thermal stability, wide intrinsic transparency from ～1.5 to 20 μm and low phonon energy. This paper investigates Ge-As-Se-Te glass system pairs for developing high numerical aperture (NA) small-core, step-index optical fiber for MIR SCG and low NA passive step-index optical fiber for an in vivo fiber probe. Control of fiber geometry of small-core optical fiber and methods of producing the glass material are also included in this paper.
机译：新型基于硫属化物的玻璃纤维开辟了中红外（MIR）范围，可在医学诊断和化学处理中进行实时监控。具有长波长截止的光纤在这里很受关注。基于硫化物，硒化物和碲化物的硫属化物玻璃是候选物，但是它们的玻璃形成区域，热稳定性以及短波长和长波长截止位置存在差异。通常，与碲化物玻璃相比，硫化物和硒化物玻璃具有更高的玻璃稳定性，但长波长截止边缘更短；硒化物-碲化物眼镜是一个很好的折衷方案。低光损耗的硒化碲化物为基础的长波长光纤在改善医学诊断系统，化学传感和处理以及安全和农业方面可以发挥重要作用。对于生物组织，分子指纹位于MIR区域的〜3-15μm波长之间。使用MIR光谱映射，可以使用明亮的宽带MIR超连续谱生成（SCG）光纤源和低光损耗光纤进行路由，从而在体内获得有关病变组织的信息，从而提高准确性。 Ge-As-Se-Te硫族化物玻璃系统是MIR SCG和无源路由光纤的潜在候选者，具有良好的热稳定性，从约1.5到20μm的宽固有透明性和低声子能量。本文研究了Ge-As-Se-Te玻璃系统对，以开发用于MIR SCG的高数值孔径（NA）小芯，阶跃折射率光纤和用于体内光纤探针的低NA被动阶跃折射率光纤。本文还包括对小芯光纤的纤维几何形状的控制以及玻璃材料的生产方法。

著录项

  • 来源
  • 会议地点 San Francisco CA(US)
  • 作者

    D. Jayasuriya; B. Wilson; D. Furniss; Z. Tang; E. Barney; T.M. Benson; A.B. Seddon;

  • 作者单位

    Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research Faculty of Engineering, University Park, University of Nottingham, Nottingham, NG7 2RD, UK;

    Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research Faculty of Engineering, University Park, University of Nottingham, Nottingham, NG7 2RD, UK;

    Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research Faculty of Engineering, University Park, University of Nottingham, Nottingham, NG7 2RD, UK;

    Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research Faculty of Engineering, University Park, University of Nottingham, Nottingham, NG7 2RD, UK;

    Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research Faculty of Engineering, University Park, University of Nottingham, Nottingham, NG7 2RD, UK;

    Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research Faculty of Engineering, University Park, University of Nottingham, Nottingham, NG7 2RD, UK;

    Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research Faculty of Engineering, University Park, University of Nottingham, Nottingham, NG7 2RD, UK;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    mid-infrared; low numerical aperture fibers; high numerical aperture fibers; remote sensing; chalcogenide glasses; supercontinuum generation;

    机译：中红外低数值孔径纤维；高数值孔径纤维；遥感;硫属化物玻璃;超连续谱;

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