公开(公告)号：US07995625B2

公开(公告)日：2011-08-09

申请号：US12499069

申请日：2009-07-07

Applicant: Young Ahn Leem ,  Jung-Ho Song ,  Kisoo Kim ,  Gyungock Kim

Inventor： Young Ahn Leem ,  Jung-Ho Song ,  Kisoo Kim ,  Gyungock Kim

IPC: H01S3/098 ,  H01S3/03 ,  H01S3/082

CPC classification number: H01S5/026 ,  H01S5/021 ,  H01S5/0215 ,  H01S5/0655 ,  H01S5/1014 ,  H01S5/1025 ,  H01S5/1032 ,  H01S5/1064 ,  H01S5/125

Abstract: Provided is a resonator of a hybrid laser diode. The resonator includes: a substrate including a semiconductor layer where a hybrid waveguide, a multi-mode waveguide, and a single mode waveguide are connected in series; a compound semiconductor waveguide, provided on the hybrid waveguide of the semiconductor layer, having a tapered coupling structure at one end of the compound semiconductor waveguide, the tapered coupling structure overlapping the multi-mode waveguide partially; and a reflection part provided on one end of the single mode waveguide. The multi-mode waveguide has a narrower width than the hybrid waveguide and the single mode waveguide has a narrower width than the multi-mode waveguide.

Abstract translation: 提供了一种混合激光二极管的谐振器。 谐振器包括：包括混合波导，多模波导和单模波导串联连接的半导体层的基板; 复合半导体波导，设置在半导体层的混合波导上，在化合物半导体波导的一端具有锥形耦合结构，锥形耦合结构部分地与多模波导重叠; 以及设置在单模波导的一端的反射部。 多模波导具有比混合波导窄的宽度，并且单模波导具有比多模波导窄的宽度。

公开(公告)号：US08213478B2

公开(公告)日：2012-07-03

申请号：US12856172

申请日：2010-08-13

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

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

IPC: H01S5/00

CPC classification number: H01S5/1003 ,  B82Y20/00 ,  H01S1/02 ,  H01S5/02461 ,  H01S5/0261 ,  H01S5/028 ,  H01S5/0612 ,  H01S5/1092 ,  H01S5/125 ,  H01S5/3434

Abstract: Provided is a laser device. In the laser device, an active layer is connected to a stem core of a 1×2 splitter on a substrate, a first diffraction grating is coupled to a first twig core of the 1×2 splitter, and a second diffraction grating is coupled to a second twig core of the 1×2 splitter. An active layer-micro heater is designed to supply heat to the active layer. First and second micro heaters are designed to supply heats to the first and second diffraction gratings, respectively, thereby varying a Bragg wavelength.

Abstract translation: 提供了一种激光装置。 在激光装置中，有源层连接到基板上的1×2分离器的芯体芯，第一衍射光栅耦合到1×2分离器的第一分支芯，并且第二衍射光栅耦合到 1×2分路器的第二个枝芯。 有源层 - 微加热器被设计成向活性层提供热量。 第一和第二微加热器被设计成分别向第一和第二衍射光栅提供热量，从而改变布拉格波长。

公开(公告)号：US20070091942A1

公开(公告)日：2007-04-26

申请号：US11438201

申请日：2006-05-22

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

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

IPC: H01S3/098 ,  H01S3/08

CPC classification number: H01S5/065 ,  H01S5/0625 ,  H01S5/0657 ,  H01S5/1039 ,  H01S5/1203

Abstract: Provided are a laser diode generating passive mode locking that does not contain non-linear sector of an SA, and a method of creating an optical pulse using the same diode. The laser diode includes a DFB sector serving as a reflector and a gain sector. The gain sector is connected to the DFB sector and includes an as-cleaved facet formed at the end of the gain sector. When a current less than a threshold current is applied to the DFB sector to allow the DFB sector to operate as a reflector, passive mode locking occurs swiftly and therefore a sector of the SA is not required, which makes manufacturing simple. Also, it is possible to effectively extend a frequency variable region compared to using of the SA.

Abstract translation: 提供了一种激光二极管，其产生不包含SA的非线性扇区的无源模式锁定，以及使用相同二极管产生光脉冲的方法。 激光二极管包括用作反射器的DFB扇区和增益扇区。 增益扇区连接到DFB扇区，并包括在增益扇区末端形成的切割面。 当将小于阈值电流的电流施加到DFB扇区以允许DFB扇区作为反射器操作时，被动模式锁定迅速发生，因此不需要SA的扇区，这使制造变得简单。 此外，与使用SA相比，可以有效地扩展频率可变区域。

公开(公告)号：US07174070B2

公开(公告)日：2007-02-06

申请号：US10883955

申请日：2004-07-01

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

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

IPC: G02B6/26

CPC classification number: H01S5/146 ,  G02B6/02195 ,  G02B6/2804 ,  G02B6/2813 ,  H01S5/0612 ,  H01S5/0623 ,  H01S5/1003 ,  H01S5/1096 ,  H01S5/141

Abstract: A light source has a structure in which a 3-dB beam splitter is integrated with a Febry-Perot laser diode having a cleaved plane. A first waveguide grating and a first refractive index modifier changing a Bragg wavelength of the first waveguide grating are provided at one branch of the 3-dB beam splitter. A second waveguide grating and a second refractive index modifier changing a Bragg wavelength of the second waveguide grating are provided at another branch of the 3-dB beam splitter.

Abstract translation: 光源具有其中3分贝分束器与具有劈开平面的Febry-Perot激光二极管集成的结构。 改变第一波导光栅的布拉格波长的第一波导光栅和第一折射率修正器设置在3-dB分束器的一个分支处。 改变第二波导光栅的布拉格波长的第二波导光栅和第二折射率修正器设置在3-dB分束器的另一分支处。

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.