公开(公告)号：KR100411480B1

公开(公告)日：2003-12-18

申请号：KR1020010008722

申请日：2001-02-21

Applicant: 에스케이씨 주식회사 ,  광주과학기술원

Inventor： 백운출 ,  정영주 ,  김덕영 ,  최재호

IPC: C03B37/029

CPC classification number: B29D11/00682 ,  B29C2035/0822 ,  G02B6/02038

Abstract: PURPOSE: A heating system for drawing plastic optical fiber is provided to melt the surface and inside of optical fiber preform homogeneously by using infrared lamp as heat sources. Therefore, this system enables long distance drawing, uniform fiber diameter and step-index and graded-index fiber production. CONSTITUTION: The heating system(30) is characterized by comprising the parts of: a furnace body(31) made of stainless steel or glass, wherein an infrared reflecting film(32) obtained by coating glass with metals with excellent infrared reflection such as Au, Cr, Al, etc. is formed inside the furnace to maximize energy efficiency; a heating source, infrared lamp(40), to melt an optical fiber preform(50), wherein the linear infrared lamp is placed along the circumference(length) of the preform, being paralleled to the preform, at regular intervals; a furnace tube(35), being the inside of the infrared lamp, into which the preform is inserted from the upper part. The heating system using infrared lamp(2500K) is effective to melt polymer preform with large diameter.

Abstract translation: 目的：提供一种用于塑料光纤拉伸的加热系统，用红外灯作为热源使光纤预制棒的表面和内部均匀熔化。 因此，该系统可实现长距离拉伸，均匀的纤维直径和阶跃折射率以及渐变折射率光纤生产。 （30）的特征在于包括以下部件：由不锈钢或玻璃制成的炉体（31），其中红外反射膜（32）通过用具有优良红外反射的金属涂覆玻璃获得，如Au ，在炉内形成Cr，Al等以使能量效率最大化; 用于熔化光纤预制棒（50）的加热源，红外灯（40），其中线性红外灯沿预制棒的圆周（长度）放置，与预制棒平行，等间隔; 作为红外灯内部的炉管（35），预制棒从上部插入其中。 使用红外灯（2500K）的加热系统可以有效地熔化大直径的聚合物预制件。

公开(公告)号：KR100393644B1

公开(公告)日：2003-08-06

申请号：KR1020010071466

申请日：2001-11-16

Applicant: 광주과학기술원

Inventor： 김덕영 ,  박용우 ,  성낙현 ,  이지용 ,  윤기성

IPC: G01J9/02

Abstract: PURPOSE: An apparatus for simultaneously measuring a refractive index and an absorption coefficient of material is provided to simply measure the refractive index and the absorption coefficient of material by using Fourier transform analysis. CONSTITUTION: A beam splitter(110) is provided to divide beam generated from a light source(100) into first and second beam paths having the same beam intensity. Beam passing through a material(120) positioned in the first beam path is reflected into a moving path by a first reflection mirror(130a). A second reflection mirror(130b) is provided to reflect beam into the moving path based on the second beam path. Beam reflected from the first and second reflection mirrors(130a,130b) is detected by a beam detector(140). A scan motor(150) is driven to scan a distance of an interferometer from the second reflection mirror(130b). A computer(160) analyzes a refractive index and an absorption coefficient of material to be measured.

Abstract translation: 目的：提供一种用于同时测量材料的折射率和吸收系数的设备，以通过使用傅里叶变换分析简单地测量材料的折射率和吸收系数。 构成：提供分束器（110）以将从光源（100）产生的光束分成具有相同光束强度的第一和第二光束路径。 穿过位于第一光束路径中的材料（120）的光束被第一反射镜（130a）反射到移动路径中。 提供第二反射镜（130b）以基于第二光束路径将光束反射到移动路径中。 由光束检测器（140）检测从第一和第二反射镜（130a，130b）反射的光束。 驱动扫描电机（150）以扫描来自第二反射镜（130b）的干涉仪的距离。 计算机（160）分析要测量的材料的折射率和吸收系数。

公开(公告)号：KR100385017B1

公开(公告)日：2003-05-23

申请号：KR1020010005331

申请日：2001-02-05

Applicant: 광주과학기술원 ,  에스케이씨 주식회사

Inventor： 백운출 ,  정영주 ,  김덕영 ,  최재호 ,  구자승

IPC: G02B6/00

Abstract: PURPOSE: A large caliber optical fiber for a local area network(LAN) optical communication using a photonic crystal structure is provided, which are installed easily with a wide optical transmission bandwidth, and has a small number of induced modes regardless of the large caliber. CONSTITUTION: The optical fiber of a photonic crystal structure comprises a cylindrical body(110) of the first material, and a cylindrical opening aperture(120) of a small caliber filled with the second material which is arranged in the photonic crystal structure in the above cylindrical body. The first material is a plastic, and the second material is air. A refractive index of the first material is larger than that of the second material. The size of the cylindrical opening aperture is about 0.5-5 micrometer.

Abstract translation: 目的：提供使用光子晶体结构的用于局域网（LAN）光通信的大口径光纤，其容易安装，具有宽的光传输带宽，并且无论大口径都具有少量的感应模式。 构成：光子晶体结构的光纤包括第一材料的圆柱体（110）和填充有第二材料的小口径圆柱形开孔（120），第二材料布置在上述光子晶体结构中 圆柱体。 第一种材料是塑料，第二种材料是空气。 第一材料的折射率大于第二材料的折射率。 圆柱形开口孔的尺寸约为0.5-5微米。

公开(公告)号：KR1020020022882A

公开(公告)日：2002-03-28

申请号：KR1020000055422

申请日：2000-09-21

Applicant: 광주과학기술원

Inventor： 육영춘 ,  김덕영

IPC: C03C17/06

CPC classification number: G02B6/241 ,  C03C25/46 ,  C03C27/046 ,  G02B6/262

Abstract: PURPOSE: A simple production method of optical fiber mirror used for optical fiber interferometric sensor is provided, which is characterized in that an auxiliary rod is attached to an optical fiber for increasing a coating area of optical fiber in coating of optical fiber. CONSTITUTION: The optical fiber mirror is produced by the following steps: flattening the end section of optical fiber by cutting an optical fiber(10) peeled off a polymer coating to make a level, and polishing; attaching the side of an auxiliary rod(14), fused silica glass rod(10cm length) melted at 1600deg.C, to the optical fiber with a binder so that the end section of optical fiber can be laid as same as or a little lower than the end section of auxiliary rod lies; putting metal(12) in a crucible, and melting it in a chamber which is 50-150deg.C higher than melting point of metal; dipping the rod attached the fiber into the melted metal, and taking out it with stirring.

Abstract translation: 目的：提供一种用于光纤干涉测量传感器的光纤镜的简单制造方法，其特征在于，辅助杆附接到光纤上，以增加光纤涂层中光纤的涂覆面积。 构成：通过以下步骤制造光纤镜：通过切割从聚合物涂层上剥离的光纤（10）来平坦化光纤的端部以进行抛光; 将粘合剂将辅助棒（14），熔融石英玻璃棒（10厘米长）的侧面粘合到光纤上，使得光纤的端部可以铺设成相同或稍低一点 比辅助杆的末端部位; 将金属（12）放入坩埚中，并在比金属熔点高50-150℃的室内熔化; 将连接纤维的杆浸入熔融的金属中，并在搅拌下取出。

公开(公告)号：KR1020010047156A

公开(公告)日：2001-06-15

申请号：KR1019990051246

申请日：1999-11-18

Applicant: 광주과학기술원

Inventor： 김덕영 ,  박용우

IPC: G01B11/14

Abstract: PURPOSE: A device for measuring fine distance using an optical fiber interferometer is provided to reduce measurement error caused by changing a path of interferometer due to change of air flow, temperature and pressure or external vibration. CONSTITUTION: A device for measuring fine distance using the optical fiber interferometer includes a laser light source(210), an optical fiber coupler(230) coupling light emitted from the light source, dividing into lights of the same intensity, transferring to a measuring path and a standard path and coupling reflected light, an optical fiber mirror(250) disposed on the standard path for reflecting light transferred from the optical fiber coupler, an optical fiber polarizing adjustor(240) disposed on the standard path, an optical fiber collimater(260) aligning light transferred from the optical fiber coupler, transferring in a straight line and reflecting reflected light to the optical fiber coupler, a mirror(270) reflecting light transferred from the optical fiber collimater in straight line to the optical fiber collimater, an optical detector(280) for detecting intensity of interference pattern by light generated during the coupling process, and a microprocessor(290) calculating phase of interference pattern in a real time and displaying.

Abstract translation: 目的：提供一种使用光纤干涉仪测量精细距离的设备，以减少由于空气流量，温度和压力或外部振动的变化而改变干涉仪路径引起的测量误差。 构成：使用光纤干涉仪测量精细距离的装置包括激光源（210），耦合从光源发出的光的光纤耦合器（230），将光分成相同强度的光，转移到测量路径 以及标准路径和耦合反射光，设置在用于反射从光纤耦合器传送的光的标准路径上的光纤反射镜（250），设置在标准路径上的光纤偏振调节器（240），光纤准直器 260）将从所述光纤耦合器传送的光对准，将直线传输并将反射光反射到所述光纤耦合器;反射镜（270），其将从所述光纤准直器传输的光直线反射到所述光纤准直器，光 检测器（280），用于通过在耦合过程期间产生的光来检测干涉图案的强度;以及微处理器（290），用于计算pha 干涉图案实时显示。

公开(公告)号：KR1020110107179A

公开(公告)日：2011-09-30

申请号：KR1020100026392

申请日：2010-03-24

Applicant: 광주과학기술원

Inventor： 송우섭 ,  김덕영 ,  문석배

IPC: G01N21/64 ,  G02B21/00 ,  G01N33/483

Abstract: 본 발명의 적어도 일 실시예에 따른 형광 측정 장치 및 방법은, 샘플의 형광 이미지를 획득하고 획득된 형광 이미지가 소정 이미지 면에 결상되도록 형광 빛을 출력하는 형광 현미경에 '그 이미지 면 상의 일정 위치에 말단이 위치한 광섬유', '그 형광 이미지와 광섬유 말단이 특정 위치에 위치함을 동시에 보여주는 이미지 센서' 및 '그 광섬유를 통해 입사된 형광 빛을 이용해 그 샘플의 특정 위치의 형광 정보를 획득하는 광신호 처리부'를 포함함으로써, 샘플의 특정 위치의 형광 정보를 획득할 수 있다. 또한, 본 발명의 적어도 일 실시예에 따르면 상기 형광 측정 장치에 그 소정 이미지 면으로부터 일정 거리만큼 이격된 면인 이격 면에 이미지 센서를 더 구비함으로써, 샘플을 이미지로 모니터링 함과 동시에 그 샘플의 특정 위치에서의 형광 정보를 쉽고 빠르게 얻을 수 있는 것이다.

公开(公告)号：KR100963237B1

公开(公告)日：2010-06-11

申请号：KR1020080005811

申请日：2008-01-18

Applicant: 광주과학기술원

Inventor： 이지용 ,  김덕영

IPC: G01J3/46

Abstract: 본 발명은 간섭계와 광검출기를 이용하여 간섭무늬를 측정하고, 이 간섭무늬에서 얻어진 위상값을 수학적 신호처리함으로써 광섬유의 색분산을 측정하는 색분산 계산 장치 및 그 방법, 색분산 측정 시스템 및 그 방법, 상기 방법들을 구현하는 프로그램이 저장된 기록매체에 관한 것이다. 본 발명은 (a) 간섭 성분을 가지는 입력 신호에 가우시안 필터들이 소정의 간격으로 이격된 가우시안 필터군을 적용하여 복수개의 서브 스펙트럼군들을 생성하는 단계; (b) 생성된 복수개의 서브 스펙트럼군들로부터 피크 성분들을 추출하고, 추출된 피크 성분 각각에 따른 시간 지연값을 계산하는 단계; (c) 피팅용 함수를 이용하여 피크 성분의 주파수와 시간 지연값을 변수로 하는 색분산 계산용 함수를 생성하는 단계; 및 (d) 생성된 색분산 계산용 함수를 이용하여 색분산을 계산하는 단계를 포함하는 것을 특징으로 하는 색분산 계산 방법을 제공한다. 본 발명에 따르면, 첫째, 광섬유의 모드나 길이에 관계없이 상기 광섬유의 색분산을 측정할 수 있다. 둘째, 광섬유의 색분산을 고속 측정할 수 있다. 세째, 생산공정이 빠르며, 종전보다 비용 부담도 적다.
색분산(chromatic dispersion) 측정, 간섭계(interferometer), 광섬유(FUT), 퓨리에 변환(fourier transform), 마하젠더(mach-zehnder) 간섭계, 간섭무늬, 가우 시안 필터, 최소제곱법(method of least squares), 커브 피팅(curve fitting), 광도파로(optical waveguide)

公开(公告)号：KR100929202B1

公开(公告)日：2009-12-01

申请号：KR1020080017799

申请日：2008-02-27

Applicant: 광주과학기술원

Inventor： 김덕영 ,  조승범

IPC: G01N21/65

CPC classification number: G01N21/65 ,  G01J3/44 ,  G01N2021/653

Abstract: 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 (401) and a stokes light source (402) that irradiate pump light and stokes light on a sample (S) to generate anti-stokes light having anti-stokes frequency; a reference light source (410) that generates reference light; and an image obtaining unit (430) 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 provides an apparatus for obtaining images using coherent anti-stokes Raman scattering that is not affected by non-resonant background signals, that has strong resistance against noise even for weak signals, and that has excellent sensitivity and resolution.

Abstract translation: 公开了一种使用相干反斯托克斯拉曼散射来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（401）和斯托克斯光源（402），其对样品（S）上的泵浦光和斯托克斯光进行照射以产生抗 具有反斯托克斯频率的触发光; 参考光源（410），其生成参考光; 以及图像获得单元（430），其使用由于反斯托克斯频率附近的样本的折射率变化而引起的参考光的相位变化来获得样本的图像。 从而，本发明提供了一种使用相干反斯托克斯拉曼散射获得图像的装置，其不受非谐振背景信号的影响，即使对于弱信号也具有很强的抵抗噪声的能力，并且具有优异的灵敏度和分辨率。

公开(公告)号：KR1020090083816A

公开(公告)日：2009-08-04

申请号：KR1020080009831

申请日：2008-01-30

Applicant: 광주과학기술원

Inventor： 김덕영 ,  이지용

IPC: G01J3/46

Abstract: A device for measuring the spectral interferometer using an optical waveguide and optical fiber and a method for measuring the same are provided to get a phase value from the interference fringe measured by an interferometer and a wavelength component photo detector to measure the spectral interferometer value. A device for measuring the spectral interferometer using an optical waveguide comprises a first and second optical splitters(20,30) and a wavelength component detector(40). The first optical splitter distributes light source(10) to a standard light path(2) and measurement light path. The second optical splitter binds the standard light path and the measurement light path. The second optical splitter causes the dark fringe. A wavelength components detector detects the waveform with the dark fringe and calculates the spectral interferometer value based on the calculated phase value of the whole wavelength area.

Abstract translation: 提供一种使用光波导和光纤测量光谱干涉仪的装置及其测量方法，以从由干涉仪和波长分量光检测器测量的干涉条纹获得相位值，以测量光谱干涉仪值。 用于使用光波导测量光谱干涉仪的装置包括第一和第二光分路器（20,30）和波长分量检测器（40）。 第一光分路器将光源（10）分配到标准光路（2）和测量光路。 第二光分路器结合标准光路和测量光路。 第二个光分路器引起黑色条纹。 波长分量检测器用黑色条纹检测波形，并根据计算的整个波长区域的相位值计算光谱干涉仪值。

公开(公告)号：KR1020090079671A

公开(公告)日：2009-07-22

申请号：KR1020080005811

申请日：2008-01-18

Applicant: 광주과학기술원

Inventor： 이지용 ,  김덕영

IPC: G01J3/46

Abstract: A device and a method for calculating the CHROMATIC DISPERSION, a system and a method for measuring the CHROMATIC DISPERSION and a RECORDING MEDIUM storing a program implementing the method for the same are provided to make simplification of the device with a simplified method. A method for calculating the chromatic dispersion comprises: a step of generating a plurality of sub-spectrum groups by applying a Gaussian filter group in an input signal with the interference component; a step of extracting a peak component from a plurality of sub-spectrum groups and calculating a time delay value(S315); a step of generating a function for the chromatic dispersion calculation which has the frequency and time delay value of the peak component as variable using the function for fitting(S320); and a step of calculating the chromatic dispersion using the generated chromatic dispersion calculation function(S325).

Abstract translation: 提供了一种用于计算色谱分离的装置和方法，用于测量色谱的系统和方法以及存储执行其方法的程序的记录介质，以简化方法简化装置。 一种用于计算色散的方法包括：通过在具有干扰分量的输入信号中应用高斯滤波器组来产生多个子频谱组的步骤; 从多个子谱组中提取峰分量并计算时间延迟值的步骤（S315）; 使用所述拟合函数生成具有峰值分量的频率和时间延迟值的变量的色散计算的功能的步骤（S320）; 以及使用所生成的色散计算功能计算色散的步骤（S325）。