| Related citation: | Zongjie Bi,Songlin Yin,Yanchao Zhang,Zihao Cui,Zhaoshuo Tian,Shiyou Fu.Common Transceiver LIF-Lidar Based on Y-Type Optical Fiber for Marine Oil Spill Detection[J].Journal of Harbin Institute Of Technology(New Series),2021,28(5):9-14.DOI:10.11916/j.issn.1005-9113.2020003. |
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| Author Name | Affiliation | | Zongjie Bi | Information Optoelectronics Research Institute, Harbin Institute of Technology Weihai, Weihai 264209, Shandong, China | | Songlin Yin | Information Optoelectronics Research Institute, Harbin Institute of Technology Weihai, Weihai 264209, Shandong, China | | Yanchao Zhang | Information Optoelectronics Research Institute, Harbin Institute of Technology Weihai, Weihai 264209, Shandong, China
Shandong Institute of Shipbuilding Technology, Weihai 264209, Shandong, China | | Zihao Cui | Information Optoelectronics Research Institute, Harbin Institute of Technology Weihai, Weihai 264209, Shandong, China
Shandong Institute of Shipbuilding Technology, Weihai 264209, Shandong, China | | Zhaoshuo Tian | Information Optoelectronics Research Institute, Harbin Institute of Technology Weihai, Weihai 264209, Shandong, China
Shandong Institute of Shipbuilding Technology, Weihai 264209, Shandong, China | | Shiyou Fu | Information Optoelectronics Research Institute, Harbin Institute of Technology Weihai, Weihai 264209, Shandong, China
Shandong Institute of Shipbuilding Technology, Weihai 264209, Shandong, China |
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| Abstract: |
| This paper presents a novel laser-induced fluorescence (LIF) Lidar system for marine oil spilling detection. A bifurcated Y-type optical fiber and an optical collimating lens compose a coaxial configuration transceiver for this LIF-Lidar system. This LIF-Lidar system was further applied to measure the excitation spectra from floating oil slicks with different thicknesses on top of seawater at different distances. The system presents several advantages such as compact structure, stable optical path, and convenient operation, which offers a wide application prospect in ocean exploration. |
| Key words: LIF-Lidar Y-type optical fiber common transceiver oil spill detection |
| DOI：10.11916/j.issn.1005-9113.2020003 |
| Clc Number:TN247 |
| Fund: |
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| Descriptions in Chinese: |
| 一种基于Y型光纤的海洋溢油检测收发合置激光诱导荧光雷达 毕宗杰1，尹松林1，张延超1,2，崔子浩1,2，田兆硕1,2，付石友1,2* （1．哈尔滨工业大学（威海）信息光电子研究所，山东 威海 264209； 2．山东船舶技术研究院，山东 威海 264209） 中文说明：近年来，随着石油资源的开发和石油工业的发展，溢油事件时有发生，对海洋及人类健康造成威胁，激光诱导荧光（LIF）能够快速的检测和鉴别石油中的荧光物质，具有无采样、无接触、无损伤等优点，是一种很有前途的方法。通常来说，LIF系统中的光学系统有收发分置和收发合置两种类型。在收发分置方案中，发射激光束与光学系统接收视场不同轴，增加了调整光路的复杂性，不利于LIF系统的普遍应用。而通常在收发合置方案中，为防止发射激光干扰接收光信号，需要增加偏振分束、滤光片等一些辅助光学元件保证发射与接收隔离。本文采用一种基于Y型光纤的收发合置LIF系统，Y型光缆由8+1根环形光纤组成。发射端为单石英光纤，与激光器连接，发射的激光经过透射光学系统准直出射到远处目标。接收端口由一个8根光纤束组成，与探测器连接，用于传输回波光信号并连接到信号处理系统。实验中，首先利用设计的LIF系统对清洁海水进行光谱测量，在2-10m范围内，激光激发水的拉曼散射峰、有色可溶性有机物（CDOM）的荧光峰和叶绿素的荧光峰会随着距离的增加强度逐渐减弱；然后对受到柴油污染的海水进行检测，调整海水表面漂浮着油膜的荧光光谱厚度在25-200μm范围内，拉曼散射峰等强度会按照朗伯-比尔吸收定律衰减；其对数值与油膜厚度近似呈线性关系，故可以用来对油膜厚度进行测量和分析。此系统具有结构紧凑、体积小、调试方便等优点，相对于反射式卡塞格林光学系统，无中心遮拦，因此效率高。采用Y型光纤结构的收发合置激光雷达在海洋探测中具有广阔的应用前景。 关键词 激光诱导荧光雷达；Y型光纤；收发合置；溢油检测 |
