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    • 2. 发明授权
    • Measurement of nonlinear refractive index coefficient of optical fiber
by Sagnac interferometer
    • 通过Sagnac干涉仪测量光纤的非线性折射率系数
    • US5774217A
    • 1998-06-30
    • US734265
    • 1996-10-21
    • Hak-Kyu LeeKyong-Hon KimSeo-Yeon ParkEl-Hang Lee
    • Hak-Kyu LeeKyong-Hon KimSeo-Yeon ParkEl-Hang Lee
    • G02B6/00G01N21/45G01B9/02
    • G01N21/45
    • A measurement of nonlinear refractive index coefficient of an optical fiber with a Sagnac interferometer, comprises the steps of employing the optical fiber in a Sagnac interferometer, splitting a signal beam into two signals, launching the two split signals into the interferometer in opposite directions, combining and detecting the signals counter-propagated in the interferometer, and detecting the refractive index coefficient of the optical fiber in accordance with the difference between the two signal powers determined by a control beam. The quasi-static phase shift of the signal beam counter-propagating the same paths of the interferometer is induced by rotating the optical fiber loop of the interferometer. The present invention gives rise to little error because it does not require precise information about the pulse width of a used beam or a high-power light.
    • 使用Sagnac干涉仪测量光纤的非线性折射率系数包括以下步骤:在Sagnac干涉仪中采用光纤,将信号光束分成两个信号,将两个分离信号以相反方向发射到干涉仪中,组合 并检测在干涉仪中反向传播的信号,并且根据由控制光束确定的两个信号功率之差检测光纤的折射率系数。 通过旋转干涉仪的光纤环来感应反向传播干涉仪相同路径的信号光束的准静态相移。 由于不需要关于使用光束或大功率光的脉冲宽度的精确信息,本发明产生很小的误差。
    • 3. 发明授权
    • All-optical signal processing apparatus of non-linear fiber loop mirror
type
    • 非线性光纤环路镜全光信号处理装置
    • US5592319A
    • 1997-01-07
    • US360140
    • 1994-12-20
    • Hak-Kyu LeeKyong-Hon KimSeo-Yeon ParkEl-Hang Lee
    • Hak-Kyu LeeKyong-Hon KimSeo-Yeon ParkEl-Hang Lee
    • G02B6/00G02B26/02G02B26/08G02F1/313G02F1/35H04Q11/00H04J14/02
    • H04Q11/0001
    • An all-optical signal processing apparatus of a non-linear fiber loop mirror type comprises a very high-speed all-optical switch that can be used as a reverse multiplexed switch in a high-speed time division optical communication. The apparatus includes a non-linear loop mirror for switching signal light by adjusting light using the non-linear effect of an optical fiber and the characteristics of a sagnac interferometer as the fundamental configuration. The all-optical switch is constructed so that another adjustment light having an appropriate time delay with respect to an existing adjusting light is additionally introduced in order to compensate for the limitation on the switching bandwidth imposed by the walk-off between adjusting and signal lights in a conventional non-linear optical fiber loop mirror. This compensates for the cross-talk of the noise signals due to DC components generated in the conventional apparatus. A switching window of a desirable size is obtained by properly adjusting the time delay between two adjusting lights and resolving the bandwidth limitation of the switch due to the walk-off of the adjusting and signal lights according to the timing jitter of signal light.
    • 非线性光纤环路反射镜的全光信号处理装置包括可以用作高速时分光通信中的反向多路复用开关的非常高速的全光开关。 该装置包括一个用于通过使用光纤的非线性效应调节光和用作基本结构的萨尼亚克干涉仪的特性来切换信号光的非线性环路镜。 全光开关被构造成使得对于现有的调节光具有适当的时间延迟的另一个调节光被额外地引入,以便补偿由调节和信号光之间的偏移所施加的开关带宽的限制 传统的非线性光纤环路镜。 这补偿了由于常规装置中产生的DC分量引起的噪声信号的串扰。 通过适当地调节两个调节灯之间的时间延迟并根据信号光的定时抖动由于调节和信号灯的脱离而解决开关的带宽限制,获得所需尺寸的开关窗口。
    • 4. 发明授权
    • System for measuring electro-optic coefficient by using interference fringe measurement, and method of measuring electro-optic coefficient by using the system
    • 通过使用干涉条纹测量来测量电光系数的系统,以及使用该系统测量电光系数的方法
    • US08724117B2
    • 2014-05-13
    • US12779236
    • 2010-05-13
    • Kyong-Hon KimSeoung-Hun LeeSeung-Hwan KimEl-Hang Lee
    • Kyong-Hon KimSeoung-Hun LeeSeung-Hwan KimEl-Hang Lee
    • G01B9/02
    • G01N21/636G01N21/1717G01N21/21G01N21/23G01N21/45G01N2021/1721
    • Measuring of an electro-optic coefficient and a thermo-optic coefficient of an optical device and an optical material, and more specifically, to measurement systems and methods of evaluating the electro-optic and thermo-optic coefficients by using interference fringe measurement techniques, wherein those optical characteristics can be precisely measured over a wide wavelength intended without using a complicated measuring equipment. The system for measuring an electro-optic coefficient includes: a light source for outputting an optical beam of multi-wavelengths, an optical interferometer including an optical beam splitter for dividing the optical beam received from the light source into two separate beams, a reference arm for receiving any one of the divided optical beams, a sample arm for receiving the other of the divided optical beams and applying a voltage to an optical sample to be measured by being connected to the optical sample, and an optical beam combiner for combining and mutually interfering optical beams that are output through the reference arm and the sample arm, and an optical spectrum analyzing device for receiving the mutually interfered optical beam from the optical interferometer and analyzing a spectrum of the mutually interfered optical beam.
    • 测量光学器件和光学材料的电光系数和热光学系数,更具体地说,涉及通过使用干涉条纹测量技术来评估电光和热光学系数的测量系统和方法,其中 可以在不使用复杂的测量设备的情况下在宽的波长上精确地测量这些光学特性。 用于测量电光系数的系统包括:用于输出多波长光束的光源;光干涉仪,包括用于将从光源接收的光束分成两束单独光束的光束分离器;参考臂 用于接收分割光束中的任何一个,用于接收另外的划分的光束并通过连接到光学样本向待测量的光学样本施加电压的采样臂以及用于组合和相互的光束组合器 通过参考臂和样本臂输出的干涉光束,以及用于从光学干涉仪接收相互干涉的光束并分析相互干涉的光束的光谱的光谱分析装置。
    • 6. 发明申请
    • SYSTEMS FOR MEASURING ELECTRO-OPTIC AND THERMO-OPTIC COEFFICIENTS BY USING INTERFERENCE FRINGE MEASUREMENT, AND METHODS OF MEASURING ELECTRO-OPTIC AND THERMO-OPTIC COEFFICIENTS BY USING THE SYSTEMS
    • 通过使用干涉测量法测量电光和热电离系数的系统以及使用该系统测量电光和热光系数的方法
    • US20100290055A1
    • 2010-11-18
    • US12779236
    • 2010-05-13
    • Kyong-Hon KimSeoung-Hun LeeSeung-Hwan KimEl-Hang Lee
    • Kyong-Hon KimSeoung-Hun LeeSeung-Hwan KimEl-Hang Lee
    • G01J3/45
    • G01N21/636G01N21/1717G01N21/21G01N21/23G01N21/45G01N2021/1721
    • Measuring of an electro-optic coefficient and a thermo-optic coefficient of an optical device and an optical material, and more specifically, to measurement systems and methods of evaluating the electro-optic and thermo-optic coefficients by using interference fringe measurement techniques, wherein those optical characteristics can be precisely measured over a wide wavelength intended without using a complicated measuring equipment. The system for measuring an electro-optic coefficient includes: a light source for outputting an optical beam of multi-wavelengths, an optical interferometer including an optical beam splitter for dividing the optical beam received from the light source into two separate beams, a reference arm for receiving any one of the divided optical beams, a sample arm for receiving the other of the divided optical beams and applying a voltage to an optical sample to be measured by being connected to the optical sample, and an optical beam combiner for combining and mutually interfering optical beams that are output through the reference arm and the sample arm, and an optical spectrum analyzing device for receiving the mutually interfered optical beam from the optical interferometer and analyzing a spectrum of the mutually interfered optical beam.
    • 测量光学器件和光学材料的电光系数和热光学系数,更具体地说,涉及通过使用干涉条纹测量技术来评估电光和热光学系数的测量系统和方法,其中 可以在不使用复杂的测量设备的情况下在宽的波长上精确地测量这些光学特性。 用于测量电光系数的系统包括:用于输出多波长光束的光源;光干涉仪,包括用于将从光源接收的光束分成两束单独光束的光束分离器;参考臂 用于接收分割光束中的任何一个,用于接收另外的划分的光束并通过连接到光学样本向待测量的光学样本施加电压的采样臂以及用于组合和相互的光束组合器 通过参考臂和样本臂输出的干涉光束,以及用于从光学干涉仪接收相互干涉的光束并分析相互干涉的光束的光谱的光谱分析装置。
    • 7. 发明授权
    • Wavelength-varying multi-wavelength optical filter laser using a single
pump light source
    • 使用单泵浦光源的波长变化多波长光学滤波器激光器
    • US5524118A
    • 1996-06-04
    • US358532
    • 1994-12-19
    • Kyong-Hon KimHak-Kyu LeeSeo-Yeon ParkEl-Hang Lee
    • Kyong-Hon KimHak-Kyu LeeSeo-Yeon ParkEl-Hang Lee
    • H01S3/07H01S3/06H01S3/067H01S3/08H01S3/083H01S3/10H01S3/102H01S3/106H01S3/23H04B10/00H04B10/25H01S3/30
    • H01S3/067H01S3/08086H01S3/083H01S3/2383
    • A wavelength-varying multi-wavelength optical filter laser using a single pump light source is disclosed. The laser comprises a wavelength-division multiplexing coupler for applying an output from a single pump light source, a first multi-branch optical fiber coupler for branching the light from the single pump light source into a plurality of optical paths, an erbium-doped fiber located at each of optical paths, wavelength-varying optical filters located at rear of each erbium-doped fiber in each optical paths, said wavelength-varying optical filters for generating laser outputs of different wavelengths in each optical paths, optical isolators located between the erbium-doped fiber and the wavelength-varying optical filter in each optical paths, said optical isolators for reducing interference between laser outputs to be stable, optic attenuators located at rear of the wavelength-varying optical filter in each optical paths, said attenuators for regulating a mode beating between laser outputs of different wavelengths, thereby causing the multi-wavelength laser oscillation to be possible, a second multi-branch optical fiber coupler for coupling branched-optical paths, and a variable optical fiber coupler located at rear of the second multi-branch optical fiber, said variable optical fiber coupler for regulates a coupling ratio of the second variable optical fiber coupler, thereby making the output thereof to be maximum.
    • 公开了使用单个泵浦光源的波长变化的多波长光学滤波器激光器。 激光器包括用于施加来自单个泵浦光源的输出的波分复用耦合器,用于将来自单个泵浦光源的光分支到多个光路中的第一多分支光纤耦合器,掺铒光纤 位于每个光路中的每个光路中位于每个掺铒光纤后面的波长变化滤光器,用于在每个光路中产生不同波长的激光输出的所述波长变化滤光器,位于铒之间的光隔离器 每个光路中的掺杂光纤和波长变化滤光器,用于减少激光输出之间的干扰的光隔离器是稳定的,位于每个光路中的波长变化滤光器后面的光衰减器,所述衰减器用于调节 在不同波长的激光输出之间进行模式跳动,从而使多波长激光振荡成为可能, 用于耦合分支光路的第二多分支光纤耦合器和位于第二多分支光纤后面的可变光纤耦合器,所述可变光纤耦合器用于调节第二可变光纤耦合器的耦合比 ,从而使其输出最大。
    • 8. 发明授权
    • Vertical modulator with dual mode DBR
    • 双模式DBR垂直调制器
    • US5751468A
    • 1998-05-12
    • US717127
    • 1996-09-20
    • Kyung-Sook HyunO-Kyun KwonKwang-Joon KimEl-Hang Lee
    • Kyung-Sook HyunO-Kyun KwonKwang-Joon KimEl-Hang Lee
    • G02B26/00G02F1/017G02F1/09
    • B82Y20/00G02F1/017G02F2201/346
    • A vertical modulator with a dual mode distributed Bragg reflection (DBR), includes a pair of integrated elements using different wavelengths to provide functions of logical operation, data switching and wavelength conversion. The optical device includes a first optical structure operating at a first wavelength (.lambda..sub.1) and a second optical structure operating at a second wavelength (.lambda..sub.2). The first and second optical structures are formed over a semiconductor substrate. The first optical structure, which operates at the first wavelength (.lambda..sub.1), transmits its data to the second optical structure so that data corresponding to the second wavelength (.lambda..sub.2) can be output. Since the wavelength of input light is different from the wavelength of output light, the optical device serves as a modulator which performs a logic operation and switching function while carrying out wavelength conversion.
    • 具有双模式分布式布拉格反射(DBR)的垂直调制器包括使用不同波长的一对集成元件,以提供逻辑运算,数据切换和波长转换的功能。 光学器件包括以第一波长(λ1)工作的第一光学结构和以第二波长(λ2)操作的第二光学结构。 第一和第二光学结构形成在半导体衬底上。 在第一波长(λ1)下操作的第一光学结构将其数据传输到第二光学结构,使得可以输出对应于第二波长(λ2)的数据。 由于输入光的波长与输出光的波长不同,所以光学器件用作在执行波长转换时执行逻辑运算和切换功能的调制器。
    • 9. 发明授权
    • Apparatus for adsorbing atomic hydrogen on surface
    • 用于在表面吸附原子氢的装置
    • US5500047A
    • 1996-03-19
    • US354037
    • 1994-12-06
    • Kang-Ho ParkJeong-Sook HaSeong-Ju ParkEl-Hang Lee
    • Kang-Ho ParkJeong-Sook HaSeong-Ju ParkEl-Hang Lee
    • H01L21/203C01B3/00C23C16/00C23C16/452G21K5/00
    • C01B3/0094C23C16/452Y02E60/327
    • A surface adsorption apparatus for dissociating H.sub.2 molecules into atomic hydrogen in a vacuum vessel and adsorbing the atomic hydrogen on a sample surface is disclosed. A vacuum tube is mounted in the vacuum vessel. A nozzle is connected to the vacuum tube having a plurality of bent portions. A heating member receives electrical power from a power supply source and heats the nozzle to a predetermined temperature. A heat shielding member is located in a path of the atomic hydrogen between one end of the nozzle and the sample surface for shielding the sample surface from heat radiating from the nozzle. The H.sub.2 molecules collide with inner wall surfaces of the bent portions to be readily dissociate into the atomic hydrogen. The atomic dissociated hydrogen propagates toward the sample surface and is adsorbed on the sample surface. Since the nozzle comprises bent portions, H.sub.2 molecules frequently collide with inner wall surfaces of the nozzle to readily dissociate into atomic hydrogen. The H.sub.2 collision efficiency is significantly improved by increased surface collisions with the bent portions. Because the bent portions of the nozzle are heated by the heating member, the construction of the apparatus is simplified.
    • 公开了一种用于在真空容器中将H 2分子解离成原子氢并将样品表面上的氢原子吸附的表面吸附装置。 真空管安装在真空容器中。 喷嘴连接到具有多个弯曲部分的真空管。 加热构件从电源接收电力并将喷嘴加热至预定温度。 热屏蔽构件位于喷嘴的一端和样品表面之间的原子氢的路径中,用于屏蔽样品表面免受从喷嘴辐射的热。 H2分子与弯曲部分的内壁表面碰撞,容易解离成原子氢。 原子解离的氢向样品表面传播并吸附在样品表面上。 由于喷嘴包括弯曲部分,所以H2分子经常与喷嘴的内壁表面碰撞以容易地解离成原子氢。 通过增加与弯曲部分的表面碰撞,H2碰撞效率显着提高。 由于喷嘴的弯曲部分被加热部件加热,因此简化了装置的结构。