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：US20100316383A1

公开(公告)日：2010-12-16

申请号：US12582211

申请日：2009-10-20

Applicant: Hyun Soo KIM ,  Kisoo Kim ,  Dong Churl Kim ,  Byung-Seok Choi ,  O-Kyun Kwon ,  Dae Kon Oh

Inventor： Hyun Soo KIM ,  Kisoo Kim ,  Dong Churl Kim ,  Byung-Seok Choi ,  O-Kyun Kwon ,  Dae Kon Oh

IPC: H04J14/02

CPC classification number: H04J14/0282

Abstract: Provided is a wavelength division multiplexed-passive optical network (WDM-PON) apparatus. The WDM-PON includes an optical source unit, an optical mux, and a chirped Bragg grating. The optical source unit generates an optical signal. The optical mux receives the optical signal from the optical source unit through one end of the optical mux, multiplexes the optical signal, and outputs the multiplexed optical signal. The chirped Bragg grating is connected to the other end of the optical mux. The chirped Bragg grating again reflects the optical signal having passed the optical mux to re-input a certain portion of the optical signal into the optical mux and the optical source unit. The optical mux performs a spectrum slicing on the re-inputted optical signal and operates the optical source unit using a channel wavelength of the optical mux as a main oscillation wavelength.

Abstract translation: 提供了一种波分复用无源光网络（WDM-PON）装置。 WDM-PON包括光源单元，光复用器和啁啾布拉格光栅。 光源单元产生光信号。 光复用器通过光复用器的一端从光源单元接收光信号，复用光信号，并输出复用的光信号。 啁啾布拉格光栅连接到光复用器的另一端。 啁啾布拉格光栅再次反射已经通过光复用器的光信号，以将光信号的某一部分重新输入光复用器和光源单元。 光复用器对重新输入的光信号执行频谱分片，并使用光复用器的信道波长作为主振荡波长来操作光源单元。

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：US20090154505A1

公开(公告)日：2009-06-18

申请号：US12181734

申请日：2008-07-29

Applicant: Kwang Ryong OH ,  Jong Hoi Kim ,  Dong Churl Kim ,  Oh Kee Kwon ,  Ki Soo Kim ,  Ki Hong Yoon

Inventor： Kwang Ryong OH ,  Jong Hoi Kim ,  Dong Churl Kim ,  Oh Kee Kwon ,  Ki Soo Kim ,  Ki Hong Yoon

IPC: H01S3/10

CPC classification number: H01S5/1071 ,  G02B6/12007 ,  H01S5/026 ,  H01S5/1032 ,  H01S5/50

Abstract: A wavelength tunable laser diode using a double coupled ring resonator is provided. A new double coupled ring resonator structure is formed by a connection of two ring resonators having different radii so that stable laser oscillation occurs only in a resonant wavelength at which the two ring resonators are simultaneously resonated, and the effective refractive index of the two ring resonators is properly controlled differently for tunable laser oscillation wavelengths. The reproducibility of the optical coupling characteristics of the passive waveguides and the ring resonator can be assured by multi-mode couplers. This results in improved manufacturing productivity of the wavelength tunable laser diode. It is possible to amplify and output an output light without having an effect on oscillation wavelength characteristic by means of an optical amplifier integrated in an output end.

Abstract translation: 提供了使用双耦合环形谐振器的波长可调激光二极管。 通过具有不同半径的两个环形谐振器的连接形成新的双重耦合环形谐振器结构，使得仅在两个环形谐振器同时谐振的谐振波长下发生稳定的激光振荡，并且两个环形谐振器的有效折射率 对于可调谐的激光振荡波长来说，它们被适当地控制不同。 通过多模耦合器可以确保无源波导和环形谐振器的光耦合特性的重现性。 这导致波长可调激光二极管的制造生产率提高。 可以通过集成在输出端的光放大器对放大和输出输出光而不影响振荡波长特性。

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：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：US08594469B2

公开(公告)日：2013-11-26

申请号：US12640627

申请日：2009-12-17

Applicant: Byung-Seok Choi ,  Dae Kon Oh ,  O-Kyun Kwon ,  Dong Churl Kim ,  Kisoo Kim ,  Hyun Soo Kim

Inventor： Byung-Seok Choi ,  Dae Kon Oh ,  O-Kyun Kwon ,  Dong Churl Kim ,  Kisoo Kim ,  Hyun Soo Kim

IPC: G02F1/035

CPC classification number: H01S5/50 ,  G02F1/2955 ,  G02F2001/0155 ,  G02F2001/0156 ,  G02F2202/06 ,  G02F2202/101 ,  G02F2202/102 ,  G02F2203/02 ,  G02F2203/15 ,  G02F2203/20 ,  G02F2203/70

Abstract: An optical amplifier includes a passive waveguide region and an active waveguide region. The passive waveguide region is configured to receive an incident optical signal and adjust a mode of the optical signal. The active waveguide region is integrated to the passive waveguide region and configured to perform gain modulation on the optical signal received from the passive waveguide region by changing density of carriers in response to a current applied to the active waveguide region. Internal loss of the active waveguide region is adjusted to produce a resonance effect and thereby to increase bandwidth of the active waveguide. Therefore, the optical amplifier can have a wide bandwidth under a low-current condition.

Abstract translation: 光放大器包括无源波导区域和有源波导区域。 无源波导区域被配置为接收入射光信号并调整光信号的模式。 有源波导区域被集成到无源波导区域，并被配置为响应于施加到有源波导区域的电流改变载波的密度，对从无源波导区域接收的光信号执行增益调制。 有源波导区域的内部损耗被调节以产生共振效应，从而增加有源波导的带宽。 因此，光放大器可以在低电流条件下具有宽带宽。

公开(公告)号：US20110134513A1

公开(公告)日：2011-06-09

申请号：US12773196

申请日：2010-05-04

Applicant: Dong Churl Kim ,  Byung-seok Choi ,  Hyun Soo Kim ,  Kisoo Kim ,  O-Kyun Kwon ,  Dae Kon Oh

Inventor： Dong Churl Kim ,  Byung-seok Choi ,  Hyun Soo Kim ,  Kisoo Kim ,  O-Kyun Kwon ,  Dae Kon Oh

IPC: H01S5/026 ,  G02B6/26 ,  G02B6/42

CPC classification number: H01S5/0265 ,  G02B6/1228 ,  G02B6/125 ,  G02B6/2813 ,  H01S5/1014 ,  H01S5/1085 ,  H01S5/50

Abstract: Provided is an optical device module that can improve miniaturization and integration. The optical device module includes a semiconductor optical amplifier having a buried structure and including a first active layer buried in a clad layer disposed on a first substrate, an optical modulator in which a sidewall of a second active layer disposed in a direction of the first active layer on a second substrate junctioned to the first substrate is exposed, the optical modulator having a ridge structure, and at least one multi-mode interference coupler in which the second active layer junctioned to the first active layer is buried in the clad layer, the multi-mode interference coupler sharing the second active layer on the second substrate between the optical modulator and the semiconductor optical amplifier and integrated with the second optical device.

Abstract translation: 提供了可以改善小型化和集成的光学装置模块。 光学器件模块包括具有掩埋结构的半导体光学放大器，并且包括掩埋在第一衬底上的覆盖层中的第一有源层，光调制器，其中第二有源层的侧壁沿着第一有源层 暴露在与第一衬底相交的第二衬底上的层，光学调制器具有脊结构，以及至少一个多模干涉耦合器，其中与第一有源层结合的第二有源层被掩埋在覆盖层中， 所述多模干涉耦合器在所述光调制器和所述半导体光放大器之间的所述第二基板上共享所述第二有源层并与所述第二光学装置集成。

公开(公告)号：US20110110391A1

公开(公告)日：2011-05-12

申请号：US13002026

申请日：2008-11-24

Applicant: Kwang-Ryong Oh ,  Dong-Churl Kim ,  Kisoo Kim

Inventor： Kwang-Ryong Oh ,  Dong-Churl Kim ,  Kisoo Kim

IPC: H01S5/323 ,  H01S5/10

CPC classification number: H01S5/1014 ,  B82Y20/00 ,  G02B6/1225 ,  G02B19/0028 ,  G02B19/0052 ,  G02B27/0977 ,  G02B27/0988 ,  G02B27/0994 ,  H01S5/0655 ,  H01S5/10 ,  H01S5/1025 ,  H01S5/12

Abstract: Provided is a semiconductor laser diode having a waveguide lens. The semiconductor laser diode includes at least one first waveguide having a narrow width, at least one second waveguide having a wide width wider, and at least one waveguide lens having an increasing width from the first waveguide toward the second waveguide and connecting the first waveguide to the second waveguide. Sidewalls of the waveguide lens connecting the first waveguide to the second waveguide may be curved. The second waveguide may be a waveguide providing an optical gain.

Abstract translation: 提供了具有波导透镜的半导体激光二极管。 半导体激光二极管包括具有窄宽度的至少一个第一波导，宽宽度更宽的至少一个第二波导和从第一波导朝向第二波导的宽度增加的至少一个波导透镜，并将第一波导连接到 第二波导。 将第一波导连接到第二波导的波导透镜的侧壁可以是弯曲的。 第二波导可以是提供光学增益的波导。