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11. 发明授权

US07369249B2 Apparatus for measuring differential mode delay of multimode optical fiber 失效
标题翻译：用于测量多模光纤的差模延迟的装置
公开(公告)号：US07369249B2
公开(公告)日：2008-05-06
申请号：US11387170
申请日：2006-03-23
申请人： Dug Young Kim , Tae Jung Ahn
发明人： Dug Young Kim , Tae Jung Ahn
IPC分类号： G01B9/02 , G01N21/00
CPC分类号： G01M11/3172
摘要： Disclosed herein is an apparatus for measuring the differential mode delay of multimode optical fiber. The apparatus includes a tunable laser source, an interferometer, a data collecting device, and a computer. The tunable laser source outputs light, frequencies of which vary linearly. The interferometer generates multimode light and single mode light by separating light, which is output from the tunable laser source, transmitting the multimode light and the single mode light to the multimode optical fiber, which is a measurement target, and a single mode path, which is a reference, and generating a beating signal by causing the multimode light and the single mode light to interfere with each other. The data collecting device collects the beating signal from the interferometer. The computer converts the frequency components of the beating signal into components in a time domain, and calculating the mode delay of the multimode light.
摘要翻译：本文公开了一种用于测量多模光纤的差模延迟的装置。该装置包括可调谐激光源，干涉仪，数据采集装置和计算机。可调激光源输出光，其频率线性变化。干涉仪通过从可调激光源输出的分离光产生多模光和单模光，将多模光和单模光传输到作为测量对象的多模光纤和单模路径，其中是参考，并且通过使多模光和单模光彼此干扰而产生跳动信号。数据收集装置从干涉仪中收集跳动信号。计算机将拍频信号的频率分量转换为时域中的分量，并计算多模光的模式延迟。

12. 发明授权

US06678433B2 Apparatus and method for measuring residual stress and photoelastic effect of optical fiber 有权
标题翻译：用于测量光纤的残余应力和光弹效应的装置和方法
公开(公告)号：US06678433B2
公开(公告)日：2004-01-13
申请号：US09939877
申请日：2001-08-27
申请人： Jin-Han Kim , Sung-Koog Oh , Yong-Woo Park , Un-Chul Paek , Dug-Young Kim
发明人： Jin-Han Kim , Sung-Koog Oh , Yong-Woo Park , Un-Chul Paek , Dug-Young Kim
IPC分类号： G02B626
CPC分类号： G01M11/088 , G01L1/242
摘要： An apparatus and method for measuring residual stress and photoelastic effect of an optical fiber is disclosed. The apparatus includes a rotating light diffuser for providing temporally averaged uniform image by restraining spatial coherence of light emitted from a light source to be completely scattered, a collecting lens for aligning the light passed through the rotating light diffuser in an optical fiber, a linear birefringence device for linearly controlling the polarization state of the aligned light input from the collecting lens, a condenser for condensing the light passed through the linear birefringence device on a place where the optical fiber is located, a fixed polarizer for transforming the polarization state of the light passed through the optical fiber to the intensity distribution by allowing the light emitted from the linear birefringence device to transmit the optical fiber, an objective lens for obtaining a magnified optical fiber image having the intensity distribution of the light transmitted the optical fiber, and a unit for measuring transmittance variation given to the optical fiber depending on locations.
摘要翻译：公开了一种用于测量光纤的残余应力和光弹性效应的装置和方法。该装置包括旋转光漫射器，用于通过抑制从光源发射的光完全散射的空间相干性来提供时间上均匀的图像，用于将通过旋转光扩散器的光对准在光纤中的聚光透镜，线性双折射用于线性控制从收集透镜输入的对准光的偏振状态的装置，用于将通过线性双折射装置的光聚光在光纤所处的位置的聚光器，用于变换光的偏振状态的固定偏振器通过允许从线性双折射装置发射的光透射光纤而使光纤通过光强分布，用于获得具有透射光纤的光的强度分布的放大光纤图像的物镜和单元用于测量给予操作的透射率变化取决于位置。

13. 发明申请

US20090213370A1 APPARATUS AND METHOD FOR OBTAINING IMAGES USING COHERENT ANTI-STOKES RAMAN SCATTERING 失效
标题翻译：使用相关反倾销拉曼散射获取图像的装置和方法
公开(公告)号：US20090213370A1
公开(公告)日：2009-08-27
申请号：US12370581
申请日：2009-02-12
申请人： Dug Young KIM , Seung Bum CHO
发明人： Dug Young KIM , Seung Bum CHO
IPC分类号： G01J3/44
CPC分类号： G01N21/65 , G01J3/44 , G01N2021/653
摘要： Disclosed is an apparatus and method for obtaining images using coherent anti-stokes Raman scattering. The apparatus for obtaining images using coherent anti-stokes Raman scattering according to the present invention comprises: a pump light source and a stokes light source that irradiate pump light and stokes light on a sample to generate anti-stokes light having anti-stokes frequency; a reference light source that generates reference light; and an image obtaining unit that obtains the images of the sample using a change in phase of the reference light due to a change in the refractive index of the sample in the vicinity of the anti-stokes frequency. Thereby, the present invention can provide the apparatus for obtaining images using coherent anti-stokes Raman scattering that is not affected by a non-resonant background signal phenomenon, strong resistance against noise even in a weak signal, and has excellent sensitivity and resolution.
摘要翻译：公开了一种使用相干反斯托克斯拉曼散射获得图像的装置和方法。根据本发明的使用相干反斯托克斯拉曼散射获得图像的装置包括：泵浦光源和斯托克斯光源，其照射泵浦光并将光束照射在样品上以产生具有反斯托克斯频率的反斯托克斯光; 产生参考光的参考光源; 以及图像获取单元，其由于在反斯托克斯频率附近的样品的折射率的变化而使用参考光的相位变化来获得样本的图像。因此，本发明可以提供使用不受非谐振背景信号现象影响的相干反斯托克斯拉曼散射获得图像的装置，即使在弱信号中也具有很强的抵抗噪声，并且具有优异的灵敏度和分辨率。

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