公开(公告)号：US07340173B2

公开(公告)日：2008-03-04

申请号：US10776720

申请日：2004-02-11

申请人： Dong-Jae Shin ,  Dae-Kwang Jung ,  Jea-Hyuck Lee ,  Jung-Kee Lee ,  Jeong-Seok Lee ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Dong-Jae Shin ,  Dae-Kwang Jung ,  Jea-Hyuck Lee ,  Jung-Kee Lee ,  Jeong-Seok Lee ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H04J14/02 ,  H04J14/00

CPC分类号： H04J14/02 ,  H04B10/506

摘要： A WDM (Wavelength Division Multiplexing) optical transmitter using a Fabry-Perot laser is disclosed. The WDM optical transmitter includes a light source for outputting incoherent light of a prescribed wavelength bandwidth, a circulator having the first to the third ports, for outputting the incoherent light received at the first port coupled to the light source to the second port, and outputting an optical signal received at the second port to the third port coupled to the external waveguide, a WGR (Waveguide Grating Router) having a multiplexing port (MP) coupled to the second port of the circulator and a plurality of demultiplexing ports (DPs), for performing WD (Wavelength Division) demultiplexing on the incoherent light received at the MP to output WD-demultiplexed signals to the plurality of DPs, and performing WD multiplexing on a plurality of channel signals received at the plurality of DPs to output WD-multiplexed signals to the MP, and a plurality of FB (Fabry-Perot) lasers respectively connected to the DPs of the WGR, each FP laser is comprised of a laser cavity, an antireflection coating layer deposited at one end of the laser cavity facing a corresponding DP, and a high reflection coating layer deposited at the other end of the laser cavity, whereby an optical injection efficiency increases and an influence of reflected light is reduced, resulting in facilitation of a wavelength-locked phenomenon.

摘要翻译： 公开了一种使用法布里 - 珀罗激光器的WDM（波分复用）​​光发射机。 WDM光发射机包括用于输出规定波长带宽的非相干光的光源，具有第一至第三端口的循环器，用于将耦合到光源的第一端口处接收到的非相干光输出到第二端口，并输出 在第二端口处接收到耦合到外部波导的第三端口的光信号，具有耦合到循环器的第二端口的复用端口（MP）的WGR（波导光栅路由器）和多个解复用端口（DP） 用于对在MP处接收到的非相干光进行WD（波分）解复用，以将WD分离的信号输出到多个DP，并且对在多个DP上接收的多个信道信号执行WD复用以输出WD复用信号 MP和分别连接到WGR的DP的多个FB（Fabry-Perot）激光器，每个FP激光器由激光腔，抗雷 在激光腔的面对相应的DP的一端沉积的吸收层，以及沉积在激光腔的另一端的高反射涂层，由此光注入效率增加并且反射光的影响减小，导致促进 的波长锁定现象。

公开(公告)号：US07187700B2

公开(公告)日：2007-03-06

申请号：US10730568

申请日：2003-12-08

申请人： Dong-Jae Shin ,  Dae-Kwang Jung ,  Jea-Hyuck Lee ,  Jung-Kee Lee ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Dong-Jae Shin ,  Dae-Kwang Jung ,  Jea-Hyuck Lee ,  Jung-Kee Lee ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H01S3/13

CPC分类号： H04B10/572 ,  H01S5/4006

摘要： Disclosed is a method for maintaining wavelength-locking of a Fabry-Perot laser regardless of a change of external temperature even though a temperature controller is not used, and a wavelength division multiplexing (WDM) light source using the method, as an economical light source used in a WDM optical communication field. The WDM light source comprises a Fabry-Perot laser for injecting spectrum-spliced incoherent light to amplify and output only an oscillation mode matching with a wavelength of the injected light, and a bias controlling unit for adjusting a bias current supplied to the Fabry-Perot laser to a value adjacent to a threshold current of the Fabry-Perot laser, whose threshold current is changed according to a temperature and a relationship between the injected light changed depending to a temperature and a wavelength of the oscillation mode. Therefore, the bias current having a value adjacent to the threshold current of the Fabry-Perot laser is supplied to the Fabry-Perot laser, so that the Fabry-Perot laser can maintain an excellent transmission characteristic regardless of a change of temperature even though a temperature controller is not used.

摘要翻译： 公开了即使不使用温度控制器也能够保持法布里 - 珀罗激光器的波长锁定的方法，而不管外部温度的变化如何，并且使用该方法作为经济光源的波分复用（WDM）光源 用于WDM光通信领域。 WDM光源包括用于注入频谱拼接的非相干光的法布里 - 珀罗激光器，以放大和仅输出与注入的光的波长匹配的振荡模式;以及偏置控制单元，用于调节提供给法布里 - 珀罗 激光到与Fabry-Perot激光器的阈值电流相邻的值，其阈值电流根据温度改变，并且注入的光随温度变化和振荡模式的波长之间的关系而改变。 因此，具有与法布里 - 珀罗激光器的阈值电流相邻的值的偏置电流被提供给法布里 - 珀罗激光器，使得法布里 - 珀罗激光器可以保持优异的传输特性，而不管温度的变化，即使 温度控制器不使用。

公开(公告)号：US20050089270A1

公开(公告)日：2005-04-28

申请号：US10841051

申请日：2004-05-07

申请人： Dong-Jae Shin ,  Jung-Kee Lee ,  Jeong-Seok Lee ,  Seong-Taek Hwang

发明人： Dong-Jae Shin ,  Jung-Kee Lee ,  Jeong-Seok Lee ,  Seong-Taek Hwang

IPC分类号： G02B6/12 ,  G02B6/10 ,  G02B6/26 ,  H01L27/15 ,  H01S5/026 ,  H01S5/028 ,  H01S5/50

CPC分类号： H01S5/50 ,  H01L27/15 ,  H01S5/0265 ,  H01S5/028

摘要： An optical transmitter module for creating an optical signal having the same wavelength as an incoherent light inputted thereinto is provided. The module includes a substrate, a multi-layer crystal growth layer including a first area for amplifying the incoherent light and the optical signal and a second area for creating an optical signal having the same wavelength as the incoherent light amplified by means of the first area, and an electrode unit for independently injecting currents into the areas of the multi-layer crystal growth layer. A light generated at a broadband light source is spectrum-sliced and injected into the optical transmitter module so that a wavelength division multiplexing light source is realised.

摘要翻译： 提供了一种用于产生具有与输入的非相干光相同波长的光信号的光发射机模块。 该模块包括衬底，多层晶体生长层，其包括用于放大非相干光和光信号的第一区域和用于产生与通过第一区域放大的非相干光波长相同的波长的光信号的第二区域 ，以及用于独立地向多层晶体生长层的区域注入电流的电极单元。 在宽带光源处产生的光被频谱分片并注入到光发射机模块中，从而实现波分复用光源。

公开(公告)号：US07099530B2

公开(公告)日：2006-08-29

申请号：US10841051

申请日：2004-05-07

申请人： Dong-Jae Shin ,  Jung-Kee Lee ,  Jeong-Seok Lee ,  Seong-Taek Hwang

发明人： Dong-Jae Shin ,  Jung-Kee Lee ,  Jeong-Seok Lee ,  Seong-Taek Hwang

IPC分类号： G02B6/26

CPC分类号： H01S5/50 ,  H01L27/15 ,  H01S5/0265 ,  H01S5/028

摘要： An optical transmitter module for creating an optical signal having the same wavelength as an incoherent light inputted thereinto is provided. The module includes a substrate, a multi-layer crystal growth layer including a first area for amplifying the incoherent light and the optical signal and a second area for creating an optical signal having the same wavelength as the incoherent light amplified by means of the first area, and an electrode unit for independently injecting currents into the areas of the multi-layer crystal growth layer. A light generated at a broadband light source is spectrum-sliced and injected into the optical transmitter module so that a wavelength division multiplexing light source is realised.

摘要翻译： 提供了一种用于产生具有与输入的非相干光相同波长的光信号的光发射机模块。 该模块包括衬底，多层晶体生长层，其包括用于放大非相干光和光信号的第一区域和用于产生与通过第一区域放大的非相干光波长相同的波长的光信号的第二区域 ，以及用于独立地向多层晶体生长层的区域注入电流的电极单元。 在宽带光源处产生的光被频谱分片并注入到光发射机模块中，从而实现波分复用光源。

公开(公告)号：US20050063704A1

公开(公告)日：2005-03-24

申请号：US10890477

申请日：2004-07-13

申请人： Eun-Hwa Lee ,  Dong-Jae Shin ,  Jung-Kee Lee ,  Dae-Kwang Jung ,  Jun-Youn Kim

发明人： Eun-Hwa Lee ,  Dong-Jae Shin ,  Jung-Kee Lee ,  Dae-Kwang Jung ,  Jun-Youn Kim

IPC分类号： H04B10/04 ,  H04B10/155 ,  H04J14/02 ,  H04J14/00

CPC分类号： H04B10/506 ,  H04J14/02

摘要： A WDM optical transmitter using a wideband gain laser comprises a plurality of wideband gain lasers and a wavelength division multiplexer. Each wideband gain laser includes a gain medium with a 3 dB bandwidth of 40 nm or more at a threshold current, and it amplifies corresponding incoherent light injected into the gain medium and outputs a corresponding channel. The multiplexer multiplexes channels, outputted from the wideband gain lasers, into an optical signal in a WDM scheme and outputs the multiplexed optical signal.

摘要翻译： 使用宽带增益激光器的WDM光发射机包括多个宽带增益激光器和波分复用器。 每个宽带增益激光器包括在阈值电流下具有40nm或更大的3dB带宽的增益介质，并且其放大注入到增益介质中的相应非相干光并输出相应的通道。 多路复用器将从宽带增益激光器输出的信道复用为WDM方案中的光信号，并输出复用的光信号。

公开(公告)号：US08855398B2

公开(公告)日：2014-10-07

申请号：US13564347

申请日：2012-08-01

申请人： Dong-Hyuk Lee ,  Jung-Kee Lee ,  Seong-Taek Hwang ,  Do-Hyeon Kim

发明人： Dong-Hyuk Lee ,  Jung-Kee Lee ,  Seong-Taek Hwang ,  Do-Hyeon Kim

IPC分类号： G06K9/00 ,  G07D7/20 ,  G06K9/20 ,  G07D7/12

CPC分类号： G07D7/2025 ,  G06F17/30244 ,  G06K9/2018 ,  G07D7/12 ,  G07D7/202

摘要： A method and a portable terminal for identifying a counterfeit bill. The method includes receiving, by the portable terminal, an image of a bill photographed using visible rays and an image of the bill photographed using infrared rays; determining a denomination of the bill by comparing the image photographed using the visible rays with a denomination database; obtaining correction information for making the image photographed using the visible rays correspond to a corresponding bill image in the denomination database; forming a corrected image by correcting the image photographed using the infrared rays using the correction information; binary-coding the corrected image; and determining whether the bill is counterfeit by comparing the binary-coded corrected image with an image of the corresponding bill pre-stored in a genuine bill database.

摘要翻译： 一种用于识别伪钞的方法和便携式终端。 该方法包括：由便携式终端接收使用可见光拍摄的纸币的图像和使用红外线拍摄的纸币的图像; 通过将使用可见光拍摄的图像与面额数据库进行比较来确定纸币的面额; 获取用于使使用可见光拍摄的图像的校正信息对应于面额数据库中的对应的纸币图像; 通过使用校正信息校正使用红外线拍摄的图像来形成校正图像; 二进制编码校正图像; 以及通过将所述二进制编码的校正图像与预先存储在真实账单数据库中的相应账单的图像进行比较来确定所述票据是否是伪造的。

公开(公告)号：US20110102599A1

公开(公告)日：2011-05-05

申请号：US12914542

申请日：2010-10-28

申请人： Jin-Wook KWON ,  Mun-Kue Park ,  Jung-Kee Lee ,  Seong-Taek Hwang ,  Mu-Sik Kwon ,  Joung-Min Seo

发明人： Jin-Wook KWON ,  Mun-Kue Park ,  Jung-Kee Lee ,  Seong-Taek Hwang ,  Mu-Sik Kwon ,  Joung-Min Seo

IPC分类号： H04N5/33

CPC分类号： H04N5/33 ,  G06F1/1639 ,  G06F3/0304 ,  G06F3/03542 ,  G06F3/0386 ,  H04M1/0272 ,  H04M2250/52 ,  H04N9/3176 ,  H04N9/3194 ,  H04N2007/145

摘要： Disclosed is a mobile terminal for providing a blackboard function to an image projected through a projector, which includes a projector for projecting an image on a screen, a camera for photographing the image projected through the projector and transferring the photographed image to an image processor. The image processor processes the image transferred from the camera and transfers the processed image to a controller. The controller controls the operation of the mobile terminal including recognizing an effective region for the projected image where infrared rays are detected from the photographed image so as to recognize an indication position of an indication device. The indication device generates infrared rays, in the projected image, and when the infrared rays are detected, a preset mark is displayed on a position of the detected infrared rays by using the projector.

摘要翻译： 公开了一种用于向通过投影仪投影的图像提供黑板功能的移动终端，该投影仪包括用于在屏幕上投影图像的投影仪，用于拍摄通过投影仪投射的图像并将拍摄图像传送到图像处理器的照相机。 图像处理器处理从相机传送的图像，并将处理的图像传送到控制器。 控制器控制移动终端的操作，包括从拍摄的图像中识别出检测到红外线的投影图像的有效区域，以识别指示装置的指示位置。 指示装置在投影图像中产生红外线，并且当检测到红外线时，通过使用投影仪在检测到的红外线的位置上显示预设标记。

公开(公告)号：US20070273953A1

公开(公告)日：2007-11-29

申请号：US11649058

申请日：2007-01-03

申请人： Sun-Lyeong Hwang ,  Jung-Kee Lee ,  Du-Chang Heo

发明人： Sun-Lyeong Hwang ,  Jung-Kee Lee ,  Du-Chang Heo

IPC分类号： G02F1/01

CPC分类号： G02B27/48 ,  G02B27/0933

摘要： Disclosed is a method of reducing speckles appearing in a laser beam. The method includes the steps of splitting the laser beam into two polarized light modes perpendicular to each other; modifying the phase of at least one of the two polarized light modes, and combining the two polarized light modes into a single laser beam outputted. The method is performed by using an apparatus that includes a light source to generate a laser beam, a polarization split filter to split the laser beam into two polarized light modes perpendicular to each other and then re-combine said two polarized light modes, and a multi-angle reflection mirror to reflect one of the two polarized light modes to the polarization split filter, wherein the polarization split filter is inserted in the multi-angle reflection mirror.

摘要翻译： 公开了一种减少出现在激光束中的斑点的方法。 该方法包括将激光束分成彼此垂直的两个偏振光模式的步骤; 修改两个偏振光模式中的至少一个的相位，并将两个偏振光模式组合成输出的单个激光束。 该方法通过使用包括光源以产生激光束的装置，将激光束分裂为彼此垂直的两个偏振光模式并且然后将所述两个偏振光模式重新组合的偏振分割滤光器来执行，以及 多角度反射镜，以将两个偏振光模式中的一个反射到偏振分离滤光器，其中偏振分离滤光器插入多角度反射镜中。

公开(公告)号：US20070258050A1

公开(公告)日：2007-11-08

申请号：US11584727

申请日：2006-10-20

申请人： Mun-Kue Park ,  Jung-Kee Lee ,  Ki-Tae Kim ,  Bum-Jin Kim

发明人： Mun-Kue Park ,  Jung-Kee Lee ,  Ki-Tae Kim ,  Bum-Jin Kim

IPC分类号： G03B21/00

CPC分类号： H04N9/3129

摘要： Provided is a laser projector. The laser projector includes a light module to generate green light, and laser light sources to generate red and blue light. The light generated in the light module and the laser light sources travels in a rectangular or a tetragonal path inside the laser projector. It can then outputted outside the laser projector.

摘要翻译： 提供了一种激光投影机。 激光投影仪包括产生绿光的光模块和产生红色和蓝色光的激光光源。 在光模块和激光源中产生的光在激光投影仪内部以矩形或四边形路径行进。 然后可以在激光投影机外部输出。

公开(公告)号：US06781211B2

公开(公告)日：2004-08-24

申请号：US10346315

申请日：2003-01-17

申请人： Hwa-Young Kang ,  Jung-Kee Lee

发明人： Hwa-Young Kang ,  Jung-Kee Lee

IPC分类号： H01L310328

CPC分类号： H01L31/035281 ,  H01L31/02327 ,  Y02E10/50

摘要： Disclosed is a photodiode with improved light-receiving efficiency and coupling effect with an optical fiber, whose capacitance may be decreased. The inventive photodiode includes a substrate; a buffer layer and a light-absorbing layer laminated in sequence on the substrate; an epitaxial layer formed on the upper surface of the light absorbing layer and having an active region with a surface in a convex lens shape so that it has greater surface area and more effective light-receiving area than an active region defined in a two-dimensional plane, the active region further having a convex surface can harvest light with its convex-lens characteristics; a dielectric layer formed on the upper surface of the epitaxial layer; a first metal electrode formed on an upper surface of the dielectric layer; and, a second metal electrode formed on an under surface of the substrate.

摘要翻译： 公开了一种具有光接收效率和与光纤的耦合效应的光电二极管，其光电容可能减小。 本发明的光电二极管包括基片; 缓冲层和光吸收层依次层压在基板上; 形成在光吸收层的上表面上的外延层，具有凸形透镜形状的表面的活性区域，使其具有比二维中限定的有源区域更大的表面积和更有效的光接收面积 平面，进一步具有凸面的有源区域可以收获其凸透镜特性的光; 形成在所述外延层的上表面上的电介质层; 形成在所述电介质层的上表面上的第一金属电极; 以及形成在所述基板的下表面上的第二金属电极。