公开(公告)号：US20150155428A1

公开(公告)日：2015-06-04

申请号：US14616149

申请日：2015-02-06

Applicant: Electronics and Telecommunications Research Institute

Inventor： Su Hwan OH ,  Ki-Hong YOON ,  Kisoo KIM ,  O-Kyun KWON ,  Oh Kee KWON ,  Byung-Seok CHOI ,  Jongbae KIM

IPC: H01L33/00

CPC classification number: H01L33/005 ,  B82Y20/00 ,  G02B6/305 ,  G02B6/4206 ,  H01L33/0045 ,  H01L33/20 ,  H01L2933/0016 ,  H01L2933/0058 ,  H01S5/02216 ,  H01S5/02284 ,  H01S5/026 ,  H01S5/06226 ,  H01S5/101 ,  H01S5/1014 ,  H01S5/141 ,  H01S5/2213 ,  H01S5/2224 ,  H01S5/2231 ,  H01S5/34306 ,  H01S2301/176

Abstract: Provided are a high-speed superluminescent diode, a method of manufacturing the same, and a wavelength-tunable external cavity laser including the same. The superluminescent diode includes a substrate having an active region and an optical mode size conversion region, waveguides including an ridge waveguide in the active region and a deep ridge waveguide in the optical mode size conversion region connected to the active waveguide, an electrode disposed on the ridge waveguide; planarizing layers disposed on sides of the ridge waveguide and the deep ridge waveguide on the substrate, and a pad electrically connected to the electrode, the pad being disposed on the planarizing layers outside the active waveguide.

Abstract translation: 提供了一种高速超发光二极管，其制造方法，以及包括该发光二极管的波长可调谐外腔激光器。 超发光二极管包括具有有源区和光模尺寸转换区的衬底，在有源区中包括脊波导的波导和连接到有源波导的光模尺寸转换区中的深脊波导， 脊波导; 设置在脊波导的侧面上的平坦化层和基板上的深脊波导，以及与该电极电连接的焊盘，该焊盘设置在有源波导的外侧的平坦化层上。

公开(公告)号：US20190219760A1

公开(公告)日：2019-07-18

申请号：US16215416

申请日：2018-12-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Duk Jun KIM ,  Young-Ho KO ,  Dong-Young KIM ,  Jong-Hoi KIM ,  Yongsoon BAEK ,  Jung-Ho SONG ,  Dong Hyo LEE ,  Byung-Seok CHOI ,  Won Seok HAN

IPC: G02B6/122

CPC classification number: G02B6/122 ,  G02B2006/12152

Abstract: An optical waveguide structure includes a substrate and a core structure disposed on the substrate. The substrate includes a first waveguide region, a second waveguide region, and a transition region between the first waveguide region and the second waveguide region. The core structure includes first core segments arranged in a first direction and a second direction crossing the first direction on the transition region. The core structure includes second core segments arranged in the first direction and the second direction on the second waveguide region. The first direction and the second direction are parallel to a top surface of the substrate.

公开(公告)号：US20220066245A1

公开(公告)日：2022-03-03

申请号：US17464470

申请日：2021-09-01

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kap-Joong KIM ,  Chun Ju YOUN ,  Young-Ho KO ,  Minchul KIM ,  Kyongchun LIM ,  Byung-Seok CHOI ,  Joong-Seon CHOE

IPC: G02F1/035 ,  G02F1/01

Abstract: Provided is a light modulation device includes a substrate, a lower clad layer disposed on the substrate, a core layer disposed on the lower clad layer to extend in a first direction which is parallel to a top surface of the substrate, and an upper clad layer covering the core on the lower clad layer. The core layer includes a waveguide layer extending in the first direction; and photonic crystal structures disposed in the waveguide layer and periodically arranged along the first direction.

公开(公告)号：US20190353918A1

公开(公告)日：2019-11-21

申请号：US16415708

申请日：2019-05-17

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kap-Joong KIM ,  Chun Ju YOUN ,  Heasin KO ,  Byung-Seok CHOI ,  Joong-Seon CHOE

IPC: G02B27/28 ,  H04K1/08

Abstract: Provided is a polarization decomposition device. The polarization decomposition device includes a polarization beam splitter configured to split an optical signal into a first polarized light having a first polarization direction and a second polarized light having a second polarization direction different from the first polarized light, a phase shifter configured to delay a phase of the first polarized light, a polarization rotator configured to rotate the second polarized light so that the polarization direction of the second polarized light is changed, and an interference beam splitter configured to allow the first polarized light in which the phase is delayed and the second polarized light in which the polarization direction is rotated to interfere with each other and split them into a third polarized light and a fourth polarized light.

公开(公告)号：US20170163009A1

公开(公告)日：2017-06-08

申请号：US15229432

申请日：2016-08-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Byung-Seok CHOI

IPC: H01S5/0683 ,  H01S5/068 ,  H01S5/14

Abstract: Provided herein are a method and apparatus for controlling the wavelength of an external-cavity wavelength-tunable laser. The reflectivity or transmittance characteristics of a wavelength depend on the phase difference between light reflected by a wavelength-tunable filter and parasitic reflective light. Thus, when the temperature of a module and current applied to a phase control electrode and an external reflector are changed, the characteristics are changed in a periodic manner. The present disclosure relates to a wavelength control algorithm of determining combinations of these parameters to set conditions having optimum chirping characteristics at a desired wavelength.

公开(公告)号：US20150125159A1

公开(公告)日：2015-05-07

申请号：US14258699

申请日：2014-04-22

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyun Soo KIM ,  Dong-Hun LEE ,  Mi-Ran PARK ,  Byung-Seok CHOI ,  Kisoo KIM ,  O-Kyun KWON

IPC: H04B10/50 ,  H04B10/516

CPC classification number: H04B10/501 ,  H04B10/2587 ,  H04B10/272 ,  H04B10/516

Abstract: Provided is a reflective colorless optical transmitter receiving a carrier signal, which is a continuous wave, and outputting a modulated optical signal. The reflective colorless optical transmitter includes a semiconductor optical amplifier (SOA) amplifying an input optical signal allowing the input optical signal to have a gain, an optical modulator connected to the SOA and outputting a modulated optical signal, a high reflectivity facet reflecting the modulated optical signal from the optical modulator, and a Bragg reflection mirror connected to the high reflectivity facet, the optical modulator, and the SOA in series, wherein a Bragg resonator is formed by the Bragg reflecting mirror and the high reflectivity facet.

Abstract translation: 提供了一种反射无色光发射机，其接收作为连续波的载波信号，并输出调制的光信号。 反射无色光发射机包括放大输入光信号以允许输入光信号具有增益的半导体光放大器（SOA），连接到SOA并输出调制光信号的光调制器，反映调制光的高反射面 来自光调制器的信号，以及连接到高反射面的布拉格反射镜，光调制器和SOA串联，其中由布拉格反射镜和高反射面形成布拉格谐振器。

公开(公告)号：US20140233945A1

公开(公告)日：2014-08-21

申请号：US14185351

申请日：2014-02-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jong Sool JEONG ,  Hyun Soo KIM ,  Mi-Ran PARK ,  Byung-Seok CHOI ,  O-Kyun KWON

IPC: H04J14/02 ,  H04B10/079

CPC classification number: H04J14/0221 ,  H04B10/506 ,  H04B10/564

Abstract: Provided is a wavelength division multiplexing (WDM) optical transmitting apparatus including first to n-th optical transmitters configured to output first to n-th optical signals having different wavelengths, respectively; a wavelength multiplexer configured to multiplex the first to n-th optical signals and generate an output optical signal; a tap coupler configured to receive the output optical signal and generate a controlling optical signal based on some of the output optical signal; a controlling photodetector configured to receive the controlling optical signal and output an optical current based on the controlling optical signal; and a controller configured to control each of the first to n-th optical transmitters based on the optical current, wherein the controller comprises a look-up table, sequentially detects driving conditions for the first to n-th optical transmitters, stores the detected driving conditions in the look-up table, and controls the first to n-th optical transmitters based on the detected driving conditions.

Abstract translation: 提供了一种波分复用（WDM）光发送装置，其包括分别输出具有不同波长的第一至第n光信号的第一至第n光发送器; 波长多路复用器，被配置为复用第一至第n光信号并产生输出光信号; 抽头耦合器，被配置为接收所述输出光信号并且基于所述输出光信号中的一些产生控制光信号; 控制光电检测器，被配置为基于所述控制光信号接收所述控制光信号并输出​​光电流; 以及控制器，其被配置为基于所述光电流来控制所述第一至第n光发送器中的每一个，其中所述控制器包括查找表，顺序地检测所述第一至第n光发送器的驱动条件，存储检测到的驱动 查找表中的条件，并且基于检测到的驾驶条件来控制第一至第n光发射机。