公开(公告)号：US08320763B2

公开(公告)日：2012-11-27

申请号：US12517533

申请日：2007-10-31

Applicant: Byoung-Whi Kim ,  Manyong Park ,  Kyung-Hyun Park ,  Hyun-Ho Yun

Inventor： Byoung-Whi Kim ,  Manyong Park ,  Kyung-Hyun Park ,  Hyun-Ho Yun

IPC: H04J14/00

CPC classification number: G02B6/4204 ,  G02B6/1221 ,  G02B6/124 ,  G02B6/4201 ,  G02B6/4237 ,  H01L2224/48091 ,  H01L2924/181 ,  H01S5/02216 ,  H01S5/02252 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/02438 ,  H01S5/02453 ,  H01S5/0612 ,  H01S5/141 ,  H01S5/146 ,  H01L2924/00014 ,  H01L2924/00012

Abstract: In the manufacture and application of a PLC-ECL type wavelength tunable light source, provided is a wavelength tunable mechanism with improved performance and stability, a light source with improved packaging performance and mass productivity, and a light source applied to a WDM-PON with initialization and stabilization functions. The wavelength tunable light source having a PLC (planar lightwave circuit)-ECL (external cavity laser) structure includes a first housing in which a semiconductor optical gain medium is mounted, a second housing in which a PLC device is mounted, and a third housing in which an optical fiber is mounted. The first, second, and third housings make an optical axis alignment through an optical coupling lens and combined in a laser welding method.

Abstract translation: 在PLC-ECL型波长可调光源的制造和应用中，提供了具有改进的性能和稳定性的波长可调谐机构，具有改进的封装性能和批量生产率的光源以及应用于WDM-PON的光源， 初始化和稳定功能。 具有PLC（平面光波电路）-ECL（外腔激光器）结构的波长可调光源包括其中安装有半导体光学增益介质的第一壳体，安装有PLC装置的第二壳体和第三壳体 其中安装有光纤。 第一，第二和第三壳体通过光耦合透镜进行光轴对准，并以激光焊接方法组合。

公开(公告)号：US20110149368A1

公开(公告)日：2011-06-23

申请号：US12788244

申请日：2010-05-26

Applicant: Namje KIM ,  Kyung Hyun Park ,  Young Ahn Leem ,  Sang-Pil Han ,  Chul-Wook Lee ,  Eundeok Sim ,  Jaeheon Shin

Inventor： Namje KIM ,  Kyung Hyun Park ,  Young Ahn Leem ,  Sang-Pil Han ,  Chul-Wook Lee ,  Eundeok Sim ,  Jaeheon Shin

IPC: G02F1/015 ,  H01S5/50

CPC classification number: G02F1/3534 ,  G02F2203/13 ,  G02F2203/70 ,  H01S5/0092 ,  H01S5/02248 ,  H01S5/06216 ,  H01S5/50

Abstract: Provided are a photomixer module and a method of generating a terahertz wave. The photomixer module includes a semiconductor optical amplifier amplifying incident laser light and a photomixer that is excited by the amplified laser light to generate a continuous terahertz wave. The photomixer is formed as a single module together with the semiconductor optical amplifier.

Abstract translation: 提供了一种光混合器模块和一种产生太赫兹波的方法。 光混合器模块包括放大入射激光的半导体光放大器和由放大的激光激发以产生连续的太赫兹波的光混合器。 该混合器与半导体光放大器一起形成为单个模块。

公开(公告)号：US07813388B2

公开(公告)日：2010-10-12

申请号：US11932937

申请日：2007-10-31

Applicant: Kyung Hyun Park ,  Hyun Sung Ko ,  Young Ahn Leem ,  Min Yong Jeon ,  Eun Deok Sim ,  Sung Bock Kim

Inventor： Kyung Hyun Park ,  Hyun Sung Ko ,  Young Ahn Leem ,  Min Yong Jeon ,  Eun Deok Sim ,  Sung Bock Kim

IPC: H01S3/098

CPC classification number: H01S5/0625 ,  H01S5/0658

Abstract: Provided is a self-pulsating laser diode including: a distributed feedback (DFB) section serving as a reflector; a gain section connected to the DFB section and having an as-cleaved facet at one end; a phase control section interposed between the DFB section and the gain section; and an external radio frequency (RF) input portion applying an external RF signal to at least one of the DFB section and the gain section.

Abstract translation: 提供了一种自脉动激光二极管，包括：用作反射器的分布反馈（DFB）部分; 连接到DFB部分并且在一端具有劈裂小面的增益部分; 相位控制部，其插入在所述DFB部和所述增益部之间; 以及外部射频（RF）输入部分，将外部RF信号施加到DFB部分和增益部分中的至少一个。

公开(公告)号：US07583868B2

公开(公告)日：2009-09-01

申请号：US11295414

申请日：2005-12-06

Applicant: Dae Su Yee ,  Young Ahn Leem ,  Dong Churl Kim ,  Kyung Hyun Park ,  Sung Bock Kim

Inventor： Dae Su Yee ,  Young Ahn Leem ,  Dong Churl Kim ,  Kyung Hyun Park ,  Sung Bock Kim

IPC: G02B6/12 ,  G02B6/26 ,  G02F1/01 ,  G02F1/035 ,  G02F1/295

CPC classification number: H04B10/299 ,  G02B6/12004

Abstract: A full 3R (re-timing, re-shaping, re-amplifying) recovery system is provided. In the full 3R recovery system, a self-pulsating laser diode (SP-LD) and an electroabsorption modulator (EAM) are integrated and disposed on a semiconductor substrate.

Abstract translation: 提供了一个完整的3R（重新定时，重新整形，再放大）恢复系统。 在完整的3R恢复系统中，自脉冲激光二极管（SP-LD）和电吸收调制器（EAM）被集成并设置在半导体衬底上。

公开(公告)号：US07356263B2

公开(公告)日：2008-04-08

申请号：US11190755

申请日：2005-07-27

Applicant: Dong Churl Kim ,  Dae Su Yee ,  Young Ahn Leem ,  Eun Deok Sim ,  Kyung Hyun Park

Inventor： Dong Churl Kim ,  Dae Su Yee ,  Young Ahn Leem ,  Eun Deok Sim ,  Kyung Hyun Park

IPC: H04B10/02

CPC classification number: H04B10/516 ,  H04B2210/517

Abstract: Provided is a signal processor for converting a signal that converts a return to zero (RZ) signal into a non-return to zero (NRZ) signal, in which two 2R (re-amplifying, re-shaping) regenerators are connected in parallel between an input waveguide and an output waveguide with different lengths from each other. The 2R regenerator includes: two semiconductor optical amplifiers having different lengths from each other; and phase control means connected to a short semiconductor optical amplifier. The RZ signal input by a length difference of the waveguide is delayed by a time difference of a half of one bit so that the 2R regenerated NRZ signal can be obtained.

Abstract translation: 提供了一种信号处理器，用于转换将归零（RZ）信号转换为不归零（NRZ）信号的信号，其中两个2R（再放大，重整）再生器并联连接在 具有彼此不同长度的输入波导和输出波导。 2R再生器包括：具有彼此不同长度的两个半导体光放大器; 以及连接到短半导体光放大器的相位控制装置。 通过波导的长度差输入的RZ信号被延迟了一位的一半的时间差，从而可以获得2R再生的NRZ信号。

公开(公告)号：US20060092502A1

公开(公告)日：2006-05-04

申请号：US11288008

申请日：2005-11-28

Applicant: Dong Kim ,  Dae Su Yee ,  Young Ahn Leem ,  Eun Deok Sim ,  Kyung Hyun Park

Inventor： Dong Kim ,  Dae Su Yee ,  Young Ahn Leem ,  Eun Deok Sim ,  Kyung Hyun Park

IPC: H01S3/00

CPC classification number: H04B10/299 ,  G02F2001/211 ,  G02F2203/70

Abstract: Provided is a signal regenerator for correcting distortion of an optical signal transmitted via an optical fiber in an optical communication system, which includes semiconductor optical amplifiers having different lengths from each other, an asymmetric Mach-Zehnder interferometer that performs 2R (re-amplifying, re-shaping) regeneration, and a delay interferometer with optical waveguides having different lengths from each other, whereby the fabrication is easy and a high-speed signal regeneration is enable.

Abstract translation: 提供了一种用于校正光通信系统中经由光纤传输的光信号的失真的信号再生器，该光通信系统包括彼此不同长度的半导体光放大器，执行2R（再放大，重新）的非对称马赫 - 曾德干涉仪 成形）再生，以及具有彼此具有不同长度的光波导的延迟干涉仪，由此易于制造并且能够进行高速信号再生。

公开(公告)号：US20060078253A1

公开(公告)日：2006-04-13

申请号：US11284632

申请日：2005-11-22

Applicant: Young Ahn Leem ,  Dae Su Yee ,  Eun Deok Sim ,  Dong Churl Kim ,  Kyung Hyun Park

Inventor： Young Ahn Leem ,  Dae Su Yee ,  Eun Deok Sim ,  Dong Churl Kim ,  Kyung Hyun Park

IPC: G02B6/28

CPC classification number: H04B10/299 ,  H01S5/02248 ,  H01S5/4006

Abstract: The 3R regeneration system for a retiming, reshaping, and reamplifying an optical signal includes: first and second input ports in which a connected optical signal is input; an interferometer including first and second branches formed on a substrate, split at a common input node, combined at a common output node, semiconductor optical amplifiers in each of the first and second branches, the first branch being connected to the first input port, and the common input node being connected to the second input port; a self-pulsating laser diode monolithically integrated with the interferometer between one of the first input port and the first branch, and the second input port and the common input node on the substrate, receiving an optical signal, and outputting the optical signal regenerated by optical injection locking; and an output port connected to the common output node.

公开(公告)号：US06278720B1

公开(公告)日：2001-08-21

申请号：US09119391

申请日：1998-07-21

Applicant: Jung Kee Lee ,  Kyung Hyun Park ,  Dong Hoon Jang ,  Chul Soon Park

Inventor： Jung Kee Lee ,  Kyung Hyun Park ,  Dong Hoon Jang ,  Chul Soon Park

IPC: H01S510

CPC classification number: H01S5/16 ,  H01S5/10 ,  H01S5/1064 ,  H01S5/2231

Abstract: A 0.98 &mgr;m semiconductor laser of a ridge waveguide (RWG) structure includes: to be lengthen the durability of a semiconductor laser by increasing a catastrophic optical damage (COD) level, a ridge having a fixed width and length so that the strip may stop in the position of 30 &mgr;m on the basic of end portion of an output facet along length direction of a resonator; and a non-waveguide region in the end portion of both sides of a resonator.

Abstract translation: 脊波导（RWG）结构的0.98μm半导体激光器包括：通过增加灾难性光学损伤（COD）水平来延长半导体激光器的耐用性，具有固定的宽度和长度的脊，使得条可能停止 在沿着谐振器的长度方向的输出小面的端部的基础上的30um的位置; 以及谐振器两侧的端部中的非波导区域。

公开(公告)号：US20140246899A1

公开(公告)日：2014-09-04

申请号：US14350482

申请日：2011-10-12

Applicant: Kyung-Hyun Park

Inventor： Kyung-Hyun Park

IPC: B62D55/28 ,  B62D55/20

CPC classification number: B62D55/20 ,  B62D55/275 ,  B62D55/28

Abstract: Disclosed is a lower track for mounting rubber pads on a track shoe to be attachable and detachable after assembling a steel plate which is adhered with divisionally formed rubber pads as a single unit without additionally perforating coupling through-holes in the track shoe when the rubber pad which forms the lower track and the track shoe which is formed of a metal material are coupled. The lower track of a crawler excavator according to the present invention comprises: first and second rubber pads which are divisionally formed; a first steel plate which supports the bottom surface of the first rubber pad by surrounding the same, and has first hooks formed on the bottom surface thereof and coupling holes formed in a connection stepped-portion, which is formed at the opposite side of the first hooks; a second steel plate which supports the bottom surface of the second rubber pad by surrounding the same, and has second hooks formed on the bottom surface thereof, connection protrusions formed at the opposite side of the second hooks so as to be secured on the connection stepped-portion, and connection through-holes formed in the protrusions so as to correspond to the coupling holes; and coupling members sequentially passing through the through-holes formed in the second rubber pad and the through-holes formed in the second steel plate so as to be fixed in the coupling holes of the first steel plate.

Abstract translation: 公开了一种用于将橡胶垫安装在履带板上的下轨道，用于在组装钢板之后可附接和拆卸，该钢板以分开形成的橡胶垫作为单个单元，而不需要在履带板中另外穿孔耦合通孔，当橡胶垫 其形成下轨道，并且由金属材料形成的履带板被联接。 根据本发明的履带式挖掘机的下轨道包括：分开形成的第一和第二橡胶垫; 第一钢板，其通过围绕其而支撑第一橡胶垫的底面，并且具有形成在其底面上的第一钩和形成在连接阶梯部中的连接孔，该连接孔形成在第一橡胶垫的第一 钩子 第二钢板，其通过围绕第二橡胶垫的底表面而支撑，并且在其底表面上形成有第二钩，形成在第二钩的相对侧的连接突起，以便固定在连接台阶上 以及形成在所述突起中的连接通孔，以对应于所述联接孔; 以及依次穿过形成在第二橡胶垫中的通孔和形成在第二钢板中的通孔的联接构件，以固定在第一钢板的联接孔中。

公开(公告)号：US08599893B2

公开(公告)日：2013-12-03

申请号：US13225609

申请日：2011-09-06

Applicant: Namje Kim ,  Kyung Hyun Park ,  Young Ahn Leem ,  Hyunsung Ko ,  Sang-Pil Han ,  Chul-Wook Lee ,  Dong-Hun Lee

Inventor： Namje Kim ,  Kyung Hyun Park ,  Young Ahn Leem ,  Hyunsung Ko ,  Sang-Pil Han ,  Chul-Wook Lee ,  Dong-Hun Lee

IPC: H01S5/00

CPC classification number: H01S5/06258 ,  G02F1/3534 ,  G02F2/002 ,  G02F2203/13 ,  H01S5/026 ,  H01S5/1092 ,  H01S5/1215 ,  H01S5/1237 ,  H01S5/4087

Abstract: Disclosed is a terahertz wave generator which includes a dual mode semiconductor laser device configured to generate at least two laser lights having different wavelengths and to beat the generated laser lights; and a photo mixer formed on the same chip as the dual mode semiconductor laser device and to generate a continuous terahertz wave when excited by the beat laser light.

Abstract translation: 公开了一种太赫兹波发生器，其包括双模式半导体激光器装置，其被配置为产生具有不同波长的至少两个激光并且击发所产生的激光; 以及形成在与双模半导体激光器件相同的芯片上的光混合器，并且当由拍子激光激发时产生连续的太赫兹波。