公开(公告)号：KR100452617B1

公开(公告)日：2004-10-12

申请号：KR1020010059367

申请日：2001-09-25

Applicant: 한국과학기술연구원

Inventor： 변영태 ,  전영민 ,  김재헌 ,  이석 ,  우덕하 ,  김선호 ,  김광남

IPC: G02F3/00

CPC classification number: H01S3/067 ,  G02F3/00 ,  G02F2002/006 ,  G02F2203/70 ,  H01S5/5054

Abstract: The present invention is related to an all-optical OR device embodied by using the gain saturation and wavelength conversion characteristics of semiconductor optical amplifier (SOA), and more particularly, to a technique to embody an all-optical OR gate that performs all-optical logic operation by utilizing optical signals transmitted at arbitrary points of optical circuits such as optical computing circuits as the pump signal and the probe signal.

Abstract translation: 本发明涉及通过使用半导体光放大器（SOA）的增益饱和和波长转换特性来体现的全光OR器件，并且更具体地涉及一种体现执行全光学 通过利用在诸如光计算电路的光电路的任意点传输的光信号作为泵信号和探测信号进行逻辑操作。

公开(公告)号：KR100418654B1

公开(公告)日：2004-02-11

申请号：KR1020010058131

申请日：2001-09-20

Applicant: 한국과학기술연구원

Inventor： 김재헌 ,  변영태 ,  전영민 ,  이석 ,  우덕하 ,  김선호 ,  강광남

IPC: H03K19/14

CPC classification number: G02F3/00

Abstract: A method for forming an electrooptic XOR logic device using an semiconductor optical amplifier is provided to form an electrooptic XOR logic device by using a characteristic of an inverter of an semiconductor optical amplifier. Characteristics of inverters of semiconductor optical amplifiers(SOA1,SOA2) are controlled by current, incident irradiation signals, and pump signals applied to the semiconductor optical amplifiers(SOA1,SOA2). The characteristics of inverters of semiconductor optical amplifiers(SOA1,SOA2) are obtained by increasing the amount of current, inputting the irradiation signals, and changing intensity of the pump signals. In the first semiconductor optical amplifiers(SOA1), B signal becomes the pump signal and A signal becomes the irradiation signal. In the second semiconductor optical amplifiers(SOA2), A signal becomes the pump signal and B signal becomes the irradiation signal. An XOR logic device is formed by adding two output signals of the semiconductor optical amplifiers(SOA1,SOA2). In the XOR logic device, the output signal has logic 1 if any one of A signal and B signal is logic 1 and the output signal has logic 0 if A signal and B signal have the same logic level.

Abstract translation: 提供一种使用半导体光学放大器形成电光XOR逻辑器件的方法，以通过使用半导体光学放大器的反相器的特性来形成电光XOR逻辑器件。 半导体光放大器（SOA1，SOA2）的反相器的特性由施加到半导体光放大器（SOA1，SOA2）的电流，入射照射信号和泵浦信号控制。 通过增加电流量，输入照射信号和改变泵浦信号的强度来获得半导体光放大器（SOA1，SOA2）的反相器的特性。 在第一半导体光放大器（SOA1）中，B信号成为泵浦信号，A信号成为照射信号。 在第二半导体光放大器（SOA2）中，A信号成为泵浦信号，B信号成为照射信号。 XOR逻辑器件通过增加两个半导体光放大器（SOA1，SOA2）的输出信号而形成。 在XOR逻辑器件中，如果A信号和B信号中的任何一个是逻辑1，则输出信号具有逻辑1，如果A信号和B信号具有相同的逻辑电平，则输出信号具有逻辑0。

公开(公告)号：KR100417162B1

公开(公告)日：2004-02-05

申请号：KR1020000005949

申请日：2000-02-09

Applicant: 한국과학기술연구원

Inventor： 김성일 ,  박영균 ,  김춘근 ,  김용태 ,  김선호

IPC: B64C11/00

Abstract: PURPOSE: A rotor device for a small vehicle and a method for checking characteristic of an aeroengine are provided to supply a rotor device and a helicopter blade with a high accuracy. CONSTITUTION: A rotor device for a small vehicle comprises a blade having a shape of peripheral curved face of a cylinder body; a hole formed on a crossed position of diagonal lines; a groove formed on front face and a rear face; and a hub formed by processing a hexahedron member. The groove of the front face is formed on a middle portion by using a left directional slant line. The groove of the rear face is formed on a middle portion by using a right directional slant line. The rotor device is produced by mixing fiberglass, carbon glass, Kevlar, carbon-carbon, FRP material into polyester and resin of epoxy.

Abstract translation: 目的：提供一种用于小型车辆的转子装置和用于检查航空发动机特性的方法，以高精度地供应转子装置和直升机桨叶。 用于小型车辆的转子装置包括具有圆柱体的周边曲面形状的刀片; 在对角线的交叉位置形成的孔; 形成在正面和背面上的凹槽; 以及通过处理六面体构件而形成的轮毂。 正面的凹槽通过使用左方向倾斜线形成在中间部分上。 后表面的凹槽通过使用右方向倾斜线形成在中间部分上。 该转子装置是通过将玻璃纤维，碳玻璃，凯夫拉尔，碳 - 碳，FRP材料混合到聚酯和环氧树脂中而制成的。

公开(公告)号：KR100414347B1

公开(公告)日：2004-01-07

申请号：KR1020010023860

申请日：2001-05-02

Applicant: 한국과학기술연구원

Inventor： 김성일 ,  김춘근 ,  김용태 ,  김선호

IPC: B64C11/20

CPC classification number: Y02T50/44

Abstract: PURPOSE: A subminiature helicopter is provided to promote the manufacturing by making the structure and shape simplified and to precisely measure aeromechanic characteristic value of a subminiature helicopter. CONSTITUTION: A subminiature helicopter comprises a pair of blades(2) having sections of an airfoil shape, a rotor device(4) for giving driving force for rotation of the blades, a guide device, and a power source supply unit(10) for applying power source to the rotor device. The guide device prevents rotation of the rotor device and makes rectilinear movement of the rotor device possible together when the rotor device moves up and down by rotation of the blades. The guide device comprises a guide bracket(6) and a guide rod(8). The guide bracket is installed on the outer surface of the rotor device for rectilinear movement of the rotor device. The guide rod is installed vertically to guide the guide bracket up and down. The guide bracket comprises a pair of guide connection units extended from the rotor device and guide pipes installed to the upper and lower side of both ends of the guide connection units to reduce the weight of the helicopter.

Abstract translation: 目的：提供超小型直升机，通过简化结构和形状来促进制造，并精确测量超小型直升机的航空机械特性值。 一种超小型直升机，包括一对具有翼型形状的叶片（2），一个用于给予叶片转动驱动力的转子装置（4），一个导向装置和一个电源供应单元（10），用于 将电源施加到转子装置。 当转子装置通过叶片的旋转而上下移动时，引导装置防止转子装置的旋转并且使得转子装置能够一起进行直线运动。 导向装置包括导向支架（6）和导向杆（8）。 导向支架安装在转子装置的外表面上，用于转子装置的直线运动。 导杆垂直安装以引导导向架上下。 导向支架包括一对从转子装置延伸的导向连接单元和安装在导向连接单元两端的上侧和下侧的导向管，以减轻直升机的重量。

公开(公告)号：KR1020030039650A

公开(公告)日：2003-05-22

申请号：KR1020010070655

申请日：2001-11-14

Applicant: 한국과학기술연구원

Inventor： 김재헌 ,  변영태 ,  전영민 ,  이석 ,  우덕하 ,  김선호

IPC: G06F7/48

CPC classification number: H01S5/50 ,  G02F3/00 ,  H01S3/06754 ,  H01S5/509

Abstract: PURPOSE: A method and device for implementing an electrooptic half adder using an element based on an SOA(Semiconductor Optical Amplifier) is provided to combine optical devices easily and to realize an independence of a polarized light and a wavelength by implementing an electrooptic XOR logic element using an inverter characteristic of the SOA and by implementing an electrooptic AND logic element using an XPM wavelength conversion. CONSTITUTION: A pulse signal having 400ps interval is created using a fiber ring laser(10) and a pulse generator(14). A coupler inputs and divides the pulse signal. An optical delay(20a) delays one portion of the divided pulse signal. A coupler combines the delayed signal with other divided portion and makes 'A' signal having 1100 pattern. An optical delay(20b) delays the 'A' signal and makes 'B' signal having 0110 pattern. The first semiconductor optical amplifier(SOA1) inputs the 'A' signal as a probe signal, inputs the 'B' signal as a pump signal, and outputs a logic signal. The second semiconductor optical amplifier(SOA2) inputs the 'A' signal as a pump signal, inputs the 'B' signal as a probe signal, and outputs a logic signal. An XPM wavelength converter(28) inputs the 'A' signal and the 'B' signal simultaneously and outputs a logic signal having 0100 pattern.

Abstract translation: 目的：提供一种使用基于SOA（半导体光放大器）的元件实现电光半加法器的方法和装置，以便容易地组合光学器件，并通过实施电光XOR逻辑元件实现偏振光和波长的独立性 使用SOA的逆变器特性，并通过使用XPM波长转换实现电光AND逻辑元件。 构成：使用光纤环形激光器（10）和脉冲发生器（14）产生具有400ps间隔的脉冲信号。 耦合器输入并分频脉冲信号。 光延迟（20a）延迟分割脉冲信号的一部分。 耦合器将延迟信号与其他分割部分相结合，使“A”信号具有1100模式。 光延迟（20b）延迟“A”信号并使具有0110模式的“B”信号。 第一个半导体光放大器（SOA1）输入“A”信号作为探测信号，输入“B”信号作为泵浦信号，并输出逻辑信号。 第二个半导体光放大器（SOA2）输入“A”信号作为泵浦信号，输入“B”信号作为探测信号，并输出逻辑信号。 XPM波长转换器（28）同时输入“A”信号和“B”信号，并输出具有0100模式的逻辑信号。

公开(公告)号：KR1020030028674A

公开(公告)日：2003-04-10

申请号：KR1020010059367

申请日：2001-09-25

Applicant: 한국과학기술연구원

Inventor： 변영태 ,  전영민 ,  김재헌 ,  이석 ,  우덕하 ,  김선호 ,  김광남

IPC: G02F3/00

CPC classification number: H01S3/067 ,  G02F3/00 ,  G02F2002/006 ,  G02F2203/70 ,  H01S5/5054

Abstract: PURPOSE: An apparatus for realizing an electric light OR logic element using a semiconductor optical amplifier is provided to realize the electric light OR logic element by using gain saturation and wavelength conversions characteristics. CONSTITUTION: A pulse generator(100) generates light pulses. An MLFL(Mode Locked Fiber Laser)(102) generates input signal patterns A and B of an electric light OR logic element from the pulse generator. A first FC(Fiber Combiner)(106) divides output light of the MLFL at a ratio of 50 to 50 through an optical isolator(104). A first optical delay obtains time delay of the output light from the first FC through a variable delay(108) and an SMF(Single-Mode Fiber)(110). A first optical controller controls the strength and polarization of the output light of the first FC through an attenuator(112) and a polarization controller(114). A second FC(116) combines the output light of the first optical delay and the first optical controller for generating the input signal pattern A. A third FC(118) divides the output light of the second FC at a ratio of 10 to 90. A second optical delay obtains time delay of the output light from the second FC through a variable delay(120) and an SMF(122). A fourth FC(124) detects the input signal pattern B generated from the second optical delay. A second optical controller controls the strength and polarization of the output light of the third FC through an attenuator(126) and a polarization controller(128). A fifth FC(130) combines the input signal patterns A and B for generating an input signal pattern A+B. An optical detecting and measuring element detects and measures the input signal pattern A+B.

Abstract translation: 目的：提供一种使用半导体光放大器实现电光或逻辑元件的装置，通过使用增益饱和度和波长转换特性来实现电光OR逻辑元件。 构成：脉冲发生器（100）产生光脉冲。 MLFL（模式锁定光纤激光器）（102）从脉冲发生器产生电光OR逻辑元件的输入信号模式A和B. 第一FC（光纤组合器）（106）通过光隔离器（104）将MLFL的输出光以50至50的比例分压。 第一光延迟获得来自第一FC的输出光通过可变延迟（108）和SMF（单模光纤）（110）的时间延迟。 第一光学控制器通过衰减器（112）和偏振控制器（114）来控制第一FC的输出光的强度和极化。 第二FC（116）将第一光学延迟的输出光和第一光学控制器组合以产生输入信号模式A.第三FC（118）以10至90的比例对第二FC的输出光进行分频。 第二光延迟通过可变延迟（120）和SMF（122）获得来自第二FC的输出光的时间延迟。 第四FC（124）检测从第二光延迟产生的输入信号模式B. 第二光学控制器通过衰减器（126）和偏振控制器（128）来控制第三FC的输出光的强度和极化。 第五FC（130）组合用于产生输入信号模式A + B的输入信号模式A和B. 光学检测和测量元件检测并测量输入信号模式A + B。

公开(公告)号：KR100368793B1

公开(公告)日：2003-01-24

申请号：KR1020000050420

申请日：2000-08-29

Applicant: 한국과학기술연구원

Inventor： 변영태 ,  김상혁 ,  우덕하 ,  이석 ,  김동환 ,  김선호

IPC: G02F3/00

CPC classification number: G02F3/00 ,  G02F2203/70 ,  Y10S359/90

Abstract: An apparatus and method for realizing an all-optical NOR logic device includes a distributed feedback laser diode and a tunable laser diode respectively generating two pump signals of different wavelengths. The apparatus also includes a pulse generator and a Mach-Zehnder modulator modulating the pump signals. The apparatus also includes a delay line adapted to delay a pump signal that has been split from the modulated pump signals and that travels along one optical path, and a polarization controller and an optical attenuator adapted to control another pump signal that has been split from the modulated pump signals and that travels along another optical path, to have the same polarization and intensity as those of the pump signal passing through the delay line. An Er-doped amplifier amplifies the sum of the pump signals so that the amplified pump signal sum saturates a semiconductor optical amplifier. The semiconductor optical amplifier exhibits gain saturation and wavelength conversion characteristics in response to an output signal from the Er-doped fiber amplifier and a probe signal passing therethrough. A plurality of 50:50 fiber couplers are coupled to respective output ends of the laser diodes, the Mach-Zehnder modulator, the attenuator, and the Er-doped fiber amplifier in order to conduct coupling and splitting operations for the pump signals.

Abstract translation: 用于实现全光学NOR逻辑器件的装置和方法包括分布式反馈激光二极管和可调谐激光二极管，分别产生不同波长的两个泵浦信号。 该设备还包括脉冲发生器和调制泵信号的Mach-Zehnder调制器。 该设备还包括延迟线，该延迟线适于延迟已经从调制的泵浦信号中分离并且沿着一个光路行进的泵浦信号，以及偏振控制器和光学衰减器，适合于控制已经从 调制后的泵浦信号并且沿着另一光路传播，以具有与通过延迟线路的泵浦信号相同的极化和强度。 掺铒放大器放大泵浦信号的总和，使得放大的泵浦信号总和饱和半导体光放大器。 响应来自掺铒光纤放大器的输出信号和通过其的探测信号，半导体光放大器表现出增益饱和和波长转换特性。 多个50:50光纤耦合器耦合到激光二极管，Mach-Zehnder调制器，衰减器和掺铒光纤放大器的相应输出端，以便对泵浦信号进行耦合和分离操作。

公开(公告)号：KR100368790B1

公开(公告)日：2003-01-24

申请号：KR1020010001650

申请日：2001-01-11

Applicant: 한국과학기술연구원

Inventor： 김대신 ,  이석 ,  강병권 ,  박윤호 ,  우덕하 ,  김재헌 ,  김선호

IPC: G02B6/293

Abstract: PURPOSE: A method for implementing an electro-optic wavelength convertor by using a horizontal coupling of semiconductor laser and a semiconductor optical amplifier is provided to secure a wide range of input power since the method does not need a conventional Mach-Zender interferometer structure, thereby utilizing a characteristics of a conventional semiconductor laser such as a variable wavelength laser diode. CONSTITUTION: A method for implementing an electro-optic wavelength convertor by using a horizontal coupling of semiconductor laser and a semiconductor optical amplifier includes steps of etching end portions(100a,100b) of at least one of a first and a second waveguides(100,200), anti-reflection coating the end portions(100a,100b) and dividing the first and the second waveguides(100,200) by cleaving to thereby obtain a divided reflection surface and a divided anti-reflection surface, respectively. An active laser provided thereon with the first and the second waveguides(100,200) utilized in the method is made of InGaAsP and constructed into a multi-quantum well structure.

Abstract translation: 目的：提供一种通过使用半导体激光器和半导体光学放大器的水平耦合来实现电光波长转换器的方法，以确保宽范围的输入功率，因为​​该方法不需要传统的Mach-Zender干涉仪结构， 利用诸如可变波长激光二极管的常规半导体激光器的特性。 本发明涉及一种通过使用半导体激光器和半导体光学放大器的水平耦合来实现电光波长转换器的方法，包括以下步骤：蚀刻第一和第二波导（100,200）中的至少一个的端部（100a，100b） ，防反射涂覆端部（100a，100b）并且通过劈开分割第一和第二波导（100,200），从而分别获得分开的反射表面和分开的防反射表面。 其上提供有用于该方法中的第一和第二波导（100,200）的有源激光器由InGaAsP制成并构建成多量子阱结构。

公开(公告)号：KR100361035B1

公开(公告)日：2002-11-18

申请号：KR1020000005631

申请日：2000-02-07

Applicant: 한국과학기술연구원

Inventor： 우덕하 ,  이석 ,  한일기 ,  김선호 ,  최원준 ,  변영태 ,  김회종 ,  김재헌 ,  강광남 ,  김대식 ,  양지상

IPC: H01L31/14

Abstract: 본 발명은 스스로 뭉쳐서 형성된 양자점에서 나오는 광의 스펙트럼이 매우 넓은 것을 이용하여 반도체 광 증폭기의 이득 대역폭을 확장하는 방법에 관한 것이다.
더 상세하게는 InGaAs/InGaAsP/InP 양자우물 반도체 광증폭기의 이득 대역폭 확장방법에 있어서, 소정 두께의 InP 버퍼층을 성장시키는 과정과, 상기 InP 버퍼층 성장후 소정 가스를 공급하는 제1 가스 공급 과정과, 상기 InP 버퍼층 위로 InAs 단일 우물 구조층을 성장시키는 과정과, 상기 InAs 층 성장 후 소정 가스를 공급하여 격자 상수가 맞지 않는 상기 InAs 층이 서로 뭉쳐서 양자점을 형성하도록 하는 제2 가스 공급 과정과, 상기 InAs 층 위로 소정 두께의 InP 캡층을 성장시키는 과정으로 양자점을 생성하여 반도체 광 증폭기의 이득영역으로 양자점을 도입하고, 상기 InAs가 서로 뭉치면서 각 점들의 크기와 높이가 불균일하게 서로 독립적인 점을 형성하게 함을 특징으로 한다.

公开(公告)号：KR1020020049493A

公开(公告)日：2002-06-26

申请号：KR1020000078678

申请日：2000-12-19

Applicant: 한국과학기술연구원

Inventor： 강병권 ,  이석 ,  박윤호 ,  김선호 ,  우덕하 ,  양정수 ,  송종한

IPC: G02B26/02

CPC classification number: G02B5/1857 ,  G03H2260/14

Abstract: PURPOSE: A method for generating a large area holographic grating and an apparatus thereof are provided, which fabricates a large area grating below an effective area of a lens as using an optical system of small caliber. CONSTITUTION: A light projected by an ultraviolet ray laser(10) of a single wavelength is focused to a pin hole(14) with an object lens(12) and then passes through a spatial lens removing noise in the air, and then the beam extended using a collimating lens(16) and passes through an inverse Gaussian transparent filter(22) and is irradiated to a sample(18) in parallel. The sample is located to have an angle to a path of the light, and a mirror(20) is attached to the sample so that a reflected light has a specific angle with the incident light to control an interval of an interference pattern.

Abstract translation: 目的：提供一种用于生成大面积全息光栅的方法及其装置，其使用小口径光学系统在透镜的有效区域下方制造大面积的光栅。 构成：将由单一波长的紫外线激光器（10）投影的光聚焦到具有物镜（12）的针孔（14），然后通过空间透镜去除空气中的噪声，然后将光束 使用准直透镜（16）延伸并通过反相高斯透明滤光器（22）并且平行地照射到样品（18）。 样品被定位成与光的路径成一角度，并且反射镜（20）附着到样品上，使得反射光与入射光具有特定的角度，以控制干涉图案的间隔。