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公开(公告)号：KR1020150097166A
公开(公告)日：2015-08-26
申请号：KR1020140018376
申请日：2014-02-18
Applicant: 조선대학교산학협력단 , (주)옵토네스트
IPC: G01J1/02
CPC classification number: G01J1/0219 , G01J1/0492 , G01J1/34 , G01J2001/0496
Abstract: 본 발명은 아조벤젠 폴리머가 코팅된 광섬유 브래그 격자(FBG:Fiber Bragg Grating) 기반의 광 반응부, 및 상기 광 반응부의 상부에 구비되어 자외선 광에 노출시 상기 광 반응부에 자외선을 집광시키는 렌즈를 포함하는 렌즈를 결합한 광섬유 브래그 격자 기반 자외선 광센서를 제공한다.
본 발명의 렌즈를 결합한 광섬유 브래그 격자 기반 자외선 광센서에 따르면, 아조벤젠 폴리머가 코팅된 광섬유 브래그 격자(FBG:Fiber Bragg Grating) 기반의 광 반응부에 자외선 광을 집광시키는 렌즈가 구비되어 자외선 광을 광 반응부에 고르게 집속시킴으로써 아조벤젠 폴리머의 부피 변화가 빠르게 발생되고 이로 인하여 광섬유 브래그 격자의 간격변형이 빠르게 발생되며 아울러 광섬유의 중심파장에 변화가 민감하게 발생하여 자외선 광에 대한 반응도(민감도)를 크게 높일 수 있게 되는 효과가 있다.Abstract translation: 本发明提供了一种与透镜组合的基于光纤光栅的UV光传感器，其包括：基于光纤布拉格光栅（FBG）的光反应单元，其涂覆有偶氮苯聚合物; 以及通过安装在光反应单元的上部而在光反应单元中收集UV的透镜。 通过在涂布有偶氮苯聚合物的基于FBG的光反应单元中收集紫外光并且在光反应单元中均匀地收集UV光的透镜，改变了偶氮苯的体积，从而产生FBG的快速间隔变化 和纤维的中心波动，此外，反应性和灵敏度可以显着提高。
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公开(公告)号：KR101415376B1
公开(公告)日：2014-07-04
申请号：KR1020130028709
申请日：2013-03-18
Applicant: 조선대학교산학협력단
CPC classification number: G01J1/36 , G01J1/0228 , G01J1/0492 , G01J2001/0496 , G01J2001/366
Abstract: The present invention relates to an ultraviolet ray sensor based on an etched optical fiber Bragg grating and an azobenzene polymer, which improves a reaction velocity as to an ultraviolet ray and a recovery velocity to an initial value in case the ultraviolet ray disappears, as maintaining the function of the ultraviolet ray sensor based on an optical fiber grating coated with the conventional azobenzene polymer as it is, by forming an etching area in a fixed section along the length direction of an optical fiber and then forming an optical reaction part by coating an azobenzene polymer on the etching area. The ultraviolet ray sensor based on an etched optical fiber Bragg grating and an azobenzene polymer according to the present invention includes an optical fiber which has a fiber Bragg grating (FBG) formed in the etching area as including the etching area; and the azobenzene polymer for inducing a tensile force in the fiber Bragg grating when exposed to an ultraviolet ray by being coated in the etching area of the optical fiber in the state of surrounding the fiber Bragg grating. Here, the etching area is formed by etching a whole cladding or a part of a core of a fixed section along the length direction of the optical fiber.
Abstract translation: 本发明涉及一种基于蚀刻光纤布拉格光栅和偶氮苯聚合物的紫外线传感器，其在紫外线消失的情况下将紫外线的反应速度和恢复速度提高到初始值，因为保持 基于通过常规偶氮苯聚合物涂覆的光纤光栅的紫外线传感器的功能，通过沿着光纤的长度方向在固定部分中形成蚀刻区域，然后通过涂覆偶氮苯来形成光学反应部分 聚合物在蚀刻区域上。 根据本发明的基于蚀刻光纤布拉格光栅和偶氮苯聚合物的紫外线传感器包括在蚀刻区域中形成有包括蚀刻区域的光纤布拉格光栅（FBG）的光纤; 以及偶氮苯聚合物，当在围绕光纤布拉格光栅的状态下被涂覆在光纤的蚀刻区域中时，在光纤布拉格光栅中暴露于紫外线时产生张力。 这里，通过沿着光纤的长度方向蚀刻整个包层或固定部分的芯部的一部分来形成蚀刻区域。
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公开(公告)号：KR101449296B1
公开(公告)日：2014-10-13
申请号：KR1020130064953
申请日：2013-06-05
Applicant: 조선대학교산학협력단
CPC classification number: G02B6/0288 , G01J3/02 , G01M11/3172 , H04J14/02
Abstract: The present invention relates to an apparatus for measuring inter-mode dispersion of a multimode fiber, which can improve reliability of the measurement result by detecting a point logically and accurately where inter-mode dispersion of the multimode fiber occurs, and a method thereof. According to the present invention, the apparatus for measuring inter-mode dispersion of a multimode fiber includes: a light source which emits light with a continuous wavelength in an area adjacent to a wavelength for communications; an optical circulator which receives light from the light source, transmits the light to an end of the multimode fiber, receives light reflected by the other end of the multimode fiber, and transmits the light to spectrum analysis equipment; the multimode fiber which has the one end receiving light from the light source via the optical circulator, and the other end reflecting the light; a wavelength division optical detector which receives light reflected by the other end of the multimode fiber via the optical circulator and measures the intensity of the light according to each wavelength of the light; and a phase calculator which performs Fourier transform for spectrum of light obtained by the wavelength division optical detector to calculate the phase of the Fourier transform value.
Abstract translation: 本发明涉及一种用于测量多模光纤的模间色散的装置及其方法，该装置可以通过在多模光纤的模式间色散发生时逻辑地和精确地检测点来提高测量结果的可靠性。 根据本发明，用于测量多模光纤的模间色散的装置包括：在与用于通信的波长相邻的区域中发射具有连续波长的光的光源; 从光源接收光的光循环器将光传输到多模光纤的一端，接收由多模光纤的另一端反射的光，并将光传输到光谱分析设备; 该多模光纤具有通过光循环器从光源接收光的一端，另一端反射光; 波长分割光学检测器，其经由所述光循环器接收由所述多模光纤的另一端反射的光，并根据所述光的每个波长测量所述光的强度; 以及相位计算器，对由波分解光检测器获得的光谱进行傅立叶变换，以计算傅里叶变换值的相位。
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公开(公告)号：KR101576598B1
公开(公告)日：2015-12-17
申请号：KR1020140018376
申请日：2014-02-18
Applicant: 조선대학교산학협력단 , (주)옵토네스트
IPC: G01J1/02
Abstract: 본발명은아조벤젠폴리머가코팅된광섬유브래그격자(FBG:Fiber Bragg Grating) 기반의광 반응부, 및상기광 반응부의상부에구비되어자외선광에노출시상기광 반응부에자외선을집광시키는렌즈를포함하는렌즈를결합한광섬유브래그격자기반자외선광센서를제공한다. 본발명의렌즈를결합한광섬유브래그격자기반자외선광센서에따르면, 아조벤젠폴리머가코팅된광섬유브래그격자(FBG:Fiber Bragg Grating) 기반의광 반응부에자외선광을집광시키는렌즈가구비되어자외선광을광 반응부에고르게집속시킴으로써아조벤젠폴리머의부피변화가빠르게발생되고이로인하여광섬유브래그격자의간격변형이빠르게발생되며아울러광섬유의중심파장에변화가민감하게발생하여자외선광에대한반응도(민감도)를크게높일수 있게되는효과가있다.
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