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    Laser diode for controlling spatial hole burning and optical pulse generating method
    32.
    发明授权
    Laser diode for controlling spatial hole burning and optical pulse generating method 有权
    用于控制空穴燃烧的激光二极管和光脉冲发生方法

    公开(公告)号：US08837537B2

    公开(公告)日：2014-09-16

    申请号：US13614748

    申请日：2012-09-13

    Applicant: Young Ahn Leem

    Inventor： Young Ahn Leem

    IPC: H01S3/10 ,  H01S3/08

    CPC classification number: H01S5/06258 ,  H01S5/06256 ,  H01S5/0657 ,  H01S5/1221

    Abstract: A high-efficiency laser diode is provided. Since a λ/4 phase-shifted distributed feedback (DFB) laser diode has a great coupling coefficient, mode stability is poor due to spatial hole burning when multiplication of the coupling coefficient by length of a resonator is equal to or greater than 2. In the inventive concept, a region capable of controlling spatial hole burning is inserted into a semiconductor laser diode structure. Thus, an ultrahigh-speed pulse laser diode having a repetition rate in the band ranging from 100 GHz to 300 GHz is obtained. In addition, a single-mode laser diode with improved energy use efficiency is implemented by changing the configuration of a laser diode.

    Abstract translation: 提供高效率的激光二极管。 由于λ/ 4相移分布反馈（DFB）激光二极管具有很大的耦合系数，所以当谐振器的耦合系数乘以等于或大于2时，由于空间空穴燃烧，模式稳定性差。 将本发明的概念，能够控制空穴燃烧的区域插入到半导体激光二极管结构中。 因此，获得了在100GHz至300GHz范围内具有重复频率的超高速脉冲激光二极管。 此外，通过改变激光二极管的配置来实现具有改善的能量利用效率的单模激光二极管。

    Multiple distributed feedback laser devices
    36.
    发明授权
    Multiple distributed feedback laser devices 有权
    多个分布式反馈激光器件

    公开(公告)号：US08149890B2

    公开(公告)日：2012-04-03

    申请号：US12980907

    申请日：2010-12-29

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

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

    IPC: H01S5/00

    CPC classification number: H01S5/06258 ,  B82Y20/00 ,  H01S5/0265 ,  H01S5/0612 ,  H01S5/1017 ,  H01S5/1064 ,  H01S5/1231 ,  H01S5/227 ,  H01S5/34306

    Abstract: Provided is a multiple distributed feedback laser device which includes a first distributed feedback region, a modulation region, a second distributed feedback region, and an amplification region. An active layer is disposed on the substrate of the first distributed feedback region, the modulation region, the second distributed feedback region, and the amplification region. A first diffraction grating is disposed in the first distributed feedback region to be coupled to the active layer in the first distributed feedback region. A second diffraction grating is disposed in the second distributed feedback region to be coupled to the active layer in the second distributed feedback region. The multiple distributed feedback laser device further includes a first micro heater configured to supply heat to the first diffraction grating and a second micro heater configured to supply heat to the second diffraction grating.

    Abstract translation: 提供了一种多分布反馈激光装置，其包括第一分布反馈区域，调制区域，第二分布反馈区域和放大区域。 有源层设置在第一分布反馈区域，调制区域，第二分布反馈区域和放大区域的衬底上。 第一衍射光栅设置在第一分布反馈区域中，以耦合到第一分布反馈区域中的有源层。 第二衍射光栅设置在第二分布反馈区域中，以耦合到第二分布反馈区域中的有源层。 多分布式反馈激光装置还包括被配置为向第一衍射光栅供应热量的第一微加热器和被配置为向第二衍射光栅供热的第二微加热器。

    MULTIPLE DISTRIBUTED FEEDBACK LASER DEVICES
    37.
    发明申请
    MULTIPLE DISTRIBUTED FEEDBACK LASER DEVICES 有权
    多个分布式反馈激光器件

    公开(公告)号：US20110090932A1

    公开(公告)日：2011-04-21

    申请号：US12980907

    申请日：2010-12-29

    Applicant: Kyung Hyun PARK ,  Namje Kim ,  Young Ahn Leem ,  Sang-Pil Han ,  Hyunsung Ko ,  Chul-Wook Lee ,  Dong-Hun Lee ,  Jaeheon Shin ,  Eundeok Sim ,  Yongsoon Baek

    Inventor： Kyung Hyun PARK ,  Namje Kim ,  Young Ahn Leem ,  Sang-Pil Han ,  Hyunsung Ko ,  Chul-Wook Lee ,  Dong-Hun Lee ,  Jaeheon Shin ,  Eundeok Sim ,  Yongsoon Baek

    IPC: H01S5/125 ,  H01S3/08

    CPC classification number: H01S5/06258 ,  B82Y20/00 ,  H01S5/0265 ,  H01S5/0612 ,  H01S5/1017 ,  H01S5/1064 ,  H01S5/1231 ,  H01S5/227 ,  H01S5/34306

    Abstract: Provided is a multiple distributed feedback laser device which includes a first distributed feedback region, a modulation region, a second distributed feedback region, and an amplification region. An active layer is disposed on the substrate of the first distributed feedback region, the modulation region, the second distributed feedback region, and the amplification region. A first diffraction grating is disposed in the first distributed feedback region to be coupled to the active layer in the first distributed feedback region. A second diffraction grating is disposed in the second distributed feedback region to be coupled to the active layer in the second distributed feedback region. The multiple distributed feedback laser device further includes a first micro heater configured to supply heat to the first diffraction grating and a second micro heater configured to supply heat to the second diffraction grating.

    Abstract translation: 提供了一种多分布反馈激光装置，其包括第一分布反馈区域，调制区域，第二分布反馈区域和放大区域。 有源层设置在第一分布反馈区域，调制区域，第二分布反馈区域和放大区域的衬底上。 第一衍射光栅设置在第一分布反馈区域中，以耦合到第一分布反馈区域中的有源层。 第二衍射光栅设置在第二分布反馈区域中，以耦合到第二分布反馈区域中的有源层。 多分布式反馈激光装置还包括被配置为向第一衍射光栅供应热量的第一微加热器和被配置为向第二衍射光栅供热的第二微加热器。

    PHOTOELECTRIC DEVICE USING PN DIODE AND SILICON INTEGRATED CIRCUIT (IC) INCLUDING THE PHOTOELECTRIC DEVICE
    38.
    发明申请
    PHOTOELECTRIC DEVICE USING PN DIODE AND SILICON INTEGRATED CIRCUIT (IC) INCLUDING THE PHOTOELECTRIC DEVICE 失效
    使用包括光电装置的PN二极管和硅集成电路（IC）的光电装置

    公开(公告)号：US20100002978A1

    公开(公告)日：2010-01-07

    申请号：US12517802

    申请日：2007-08-07

    Applicant: Jeong-Woo Park ,  Gyungock Kim ,  Young-Ahn Leem ,  Hyun-Soo Kim ,  Bongki Mheen

    Inventor： Jeong-Woo Park ,  Gyungock Kim ,  Young-Ahn Leem ,  Hyun-Soo Kim ,  Bongki Mheen

    IPC: G02F1/035 ,  G02B6/12

    CPC classification number: H01L31/12 ,  H01L27/144

    Abstract: Provided are a photoelectric device using a PN diode and a silicon integrated circuit (IC) including the photoelectric device. The photoelectric device includes: a substrate; and an optical waveguide formed as a PN diode on the substrate, wherein a junction interface of the PN diode is formed in a direction in which light advances; and an electrode applying a reverse voltage to the PN diode, wherein N-type and P-type semiconductors of the PN diode are doped at high concentrations and the doping concentration of the N-type semiconductor is higher than or equal to that of the P-type semiconductor.

    Abstract translation: 提供了使用PN二极管的光电装置和包括光电装置的硅集成电路（IC）。 光电装置包括：基板; 以及在所述衬底上形成为PN二极管的光波导，其中所述PN二极管的结界面沿光前进的方向形成; 以及向PN二极管施加反向电压的电极，其中PN二极管的N型和P型半导体以高浓度掺杂，并且N型半导体的掺杂浓度高于或等于P 型半导体。

    Apparatus and method for wavelength conversion and clock signal extraction using semiconductor optical amplifiers
    39.
    发明授权
    Apparatus and method for wavelength conversion and clock signal extraction using semiconductor optical amplifiers 有权
    使用半导体光放大器进行波长转换和时钟信号提取的装置和方法

    公开(公告)号：US07277222B2

    公开(公告)日：2007-10-02

    申请号：US11491646

    申请日：2006-07-24

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

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

    IPC: H01S3/00

    CPC classification number: H04B10/299

    Abstract: Provided is an apparatus and method for simultaneous optical wavelength conversion and optical clock signal extraction using semiconductor optical amplifiers (SOAs). The apparatus includes: a wavelength converter receiving a pump beam having input information and a probe beam having a different wavelength from the pump beam, and outputting the pump beam with an overshoot shifted to a red wavelength and an undershoot shifted to a blue wavelength due to non-linear characteristics and self-phase modulation of semiconductor optical amplifiers (SOAs) and the probe beam delivered the input information from the pump beam; an optical divider dividing output paths of the probe beam to which the input information has been delivered and the pump beam having the overshoot and the undershoot; a converted-wavelength extractor filtering the probe beam received from the optical divider; and a clock data regenerator obtaining a pseudo return-to-zero (PRZ) signal from the pump beam received from the optical divider and extracting a clock signal from the PRZ signal.The apparatus and method can simultaneously perform wavelength conversion and optical clock signal extraction on an NRZ signal using an optical method, without converting the NRZ signal into an electrical signal.

    Abstract translation: 提供了一种使用半导体光放大器（SOA）同时进行光波长转换和光时钟信号提取的装置和方法。 该装置包括：波长转换器，其接收具有输入信息的泵浦光束和具有与泵浦光束不同的波长的探测光束，并且由于偏移到红色波长的过冲和由于由于 半导体光放大器（SOA）的非线性特性和自相位调制以及探测光束从泵浦光束传送输入信息; 分割器分割输入信息已被传送到的探测光束的输出路径和具有过冲和下冲的泵浦光束; 转换波长提取器对从分光器接收的探测光束进行滤波; 以及时钟数据再生器，从从光分路器接收的泵浦光束获得伪归零（PRZ）信号，并从PRZ信号提取时钟信号。 该装置和方法可以使用光学方法在NRZ信号上同时进行波长转换和光时钟信号提取，而不将NRZ信号转换成电信号。

    Apparatus for and method of generating millimeter waves
    40.
    发明申请
    Apparatus for and method of generating millimeter waves 有权
    仪器和产生毫米波的方法

    公开(公告)号：US20070212074A1

    公开(公告)日：2007-09-13

    申请号：US11500646

    申请日：2006-08-08

    Applicant: Kyung Hyun Park ,  Young Ahn Leem ,  Kwang Hyun Lee ,  Woo Young Choi

    Inventor： Kyung Hyun Park ,  Young Ahn Leem ,  Kwang Hyun Lee ,  Woo Young Choi

    IPC: H04B10/04

    CPC classification number: H04B1/04 ,  H04B10/50 ,  H04B2001/0491

    Abstract: Provided are an apparatus for and a method of generating millimeter waves, in which millimeter-wave generation and frequency up-conversion can be achieved at the same time using a single device. The apparatus includes a mode-locking laser diode (LD) which has a distributed feedback (DFB) sector and a gain sector and generates high-frequency optical pulses through a passive mode locking process, a modulator which modulates an external optical signal using an electric signal and injects the modulated optical signal to the mode-locking LD to lock the optical pulses, and a radio frequency (RF) locking signaling unit which injects the electric signal to the modulator.

    Abstract translation: 提供了一种产生毫米波的装置和方法，其中可以使用单个装置同时实现毫米波发生和上变频。 该装置包括具有分布式反馈（DFB）扇区和增益扇区的锁模激光二极管（LD），并通过无源模式锁定工艺产生高频光脉冲，调制器使用电动调制外部光信号 信号并将经调制的光信号注入锁模LD以锁定光脉冲;以及射频（RF）锁定信令单元，其将电信号注入调制器。

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