公开(公告)号：KR1020130112548A

公开(公告)日：2013-10-14

申请号：KR1020120035014

申请日：2012-04-04

Applicant: 한국전자통신연구원

Inventor： 권오기 ,  이철욱 ,  이동훈 ,  임영안 ,  한영탁 ,  백용순 ,  정윤철

IPC: G02B6/122 ,  G02B6/13

CPC classification number: G02B6/1228 ,  G02B6/305

Abstract: PURPOSE: A spot size converter and a manufacturing method thereof are provided to improve the yield of manufactured elements, thereby improving the productivity. CONSTITUTION: A spot size converter comprises a first waveguide (31) and a second waveguide (51). The substrate contains indium phosphide (InP) or gallium arsenide (GaAs). The first waveguide comprises a core layer (30). The core layer is tapered in a first direction in one side of the substrate and extends in a predetermined width in the other side. The second waveguide comprises a waveguide layer (50). The second waveguide covers the first waveguide in one side of the substrate, extends while being tapered in a second direction opposite to the first direction, and has the waveguide layer with the same width as the core layer in the other side of the substrate.

Abstract translation: 目的：提供点尺寸转换器及其制造方法以提高制造元件的产量，从而提高生产率。 构成：点尺寸转换器包括第一波导（31）和第二波导（51）。 衬底包含磷化铟（InP）或砷化镓（GaAs）。 第一波导包括芯层（30）。 芯层在基板的一侧沿第一方向逐渐变细，并在另一侧以预定的宽度延伸。 第二波导包括波导层（50）。 第二波导覆盖基板的一侧的第一波导，沿与第一方向相反的第二方向呈锥形延伸，并且在基板的另一侧具有与芯层相同的宽度的波导层。

公开(公告)号：KR1020130003913A

公开(公告)日：2013-01-09

申请号：KR1020110065556

申请日：2011-07-01

Applicant: 한국전자통신연구원

Inventor： 권오기 ,  임영안 ,  이동훈 ,  이철욱 ,  백용순 ,  정윤철

IPC: H01S5/12

CPC classification number: H01S5/124 ,  H01S5/1003 ,  H01S5/2077 ,  H01S2301/163

Abstract: PURPOSE: A distributed feedback laser diode and a manufacturing method thereof are provided to obtain a single mode characteristic by equipping a diffraction grid layer having asymmetry coupling coefficient. CONSTITUTION: A first area(111) has a first grating formed shaft. A second area(112) is formed to be adjacent to the first area. The second area has the second diffraction grid layer. An active layer is formed on first and second area frames. The first and second areas form respectively different coupling coefficients of the first and second diffraction grid layers. A distribution feedback laser diode moves a phase of diffraction grid in order to perform single longitudinal mode operation. [Reference numerals] (AA) Λ/4 phase shift diffraction grating; (BB) Diffraction grating; (CC) Active layer; (DD) Spacer

Abstract translation: 目的：提供分布式反馈激光二极管及其制造方法，通过装配具有不对称耦合系数的衍射栅格层来获得单模特性。 构成：第一区域（111）具有第一格栅形成的轴。 第二区域（112）形成为与第一区域相邻。 第二区域具有第二衍射栅格层。 在第一和第二区域框架上形成有源层。 第一和第二区域分别形成第一和第二衍射栅格层的不同耦合系数。 分布反馈激光二极管移动衍射网格的相位，以执行单纵模运行。 （标号）（AA）Λ/ 4相移衍射光栅; （BB）衍射光栅; （CC）活性层; （DD）间隔

公开(公告)号：KR1020130085498A

公开(公告)日：2013-07-30

申请号：KR1020110133028

申请日：2011-12-12

Applicant: 한국전자통신연구원

Inventor： 권오기 ,  한영탁 ,  이철욱 ,  이동훈 ,  임영안 ,  신장욱 ,  박상호 ,  정윤철 ,  백용순

IPC: H04B10/50 ,  G02B6/42 ,  G02B6/12

CPC classification number: H04B10/506 ,  H04B10/2575

Abstract: PURPOSE: An optical module for a multichannel transmitter is provided to reduce crosstalk and to be integrated into a small size. CONSTITUTION: A plurality of optical source parts (110a-110d) generates light. A plurality of electro absorption modulators (EAMs) (120a-120d) converts the light to an optical signal through a high frequency signal. A plurality of high frequency transmission paths (142a-142d) applies the high frequency signals to the EAMs. A combiner (130) integrates the converted optical signals. The high frequency transmission paths are connected to the EAMs by a TW electrode method. [Reference numerals] (110a) First light source; (110b) Second light source; (110c) Third light source; (110d) Fourth light source; (120a) First EAM; (120b) Second EAM; (120c) Third EAM; (120d) Fourth EAM; (130) Combiner

Abstract translation: 目的：提供用于多通道发射器的光学模块，以减少串扰并集成到小尺寸。 构成：多个光源部（110a-110d）产生光。 多个电吸收调制器（EAM）（120a-120d）通过高频信号将光转换成光信号。 多个高频传输路径（142a-142d）将高频信号施加到EAM。 组合器（130）对转换的光信号进行积分。 高频传输路径通过TW电极方法连接到EAM。 （附图标记）（110a）第一光源; （110b）第二光源; （110c）第三光源; （110d）第四光源; （120a）第一EAM; （120b）第二EAM; （120c）第三次EAM; （120d）第四次EAM; （130）组合器

公开(公告)号：KR100734873B1

公开(公告)日：2007-07-03

申请号：KR1020050121985

申请日：2005-12-12

Applicant: 한국전자통신연구원

Inventor： 김병휘 ,  이우람 ,  정윤철 ,  손의승 ,  채장원

IPC: H04B10/2581 ,  H04J14/02 ,  H04B10/00

CPC classification number: H04J14/02 ,  H04J14/0221 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

Abstract: Provided are an apparatus and method for tracking a wavelength in a passive optical subscriber network in which a central base station and at least one subscriber terminal are connected via a remote node. The apparatus includes a first wavelength aligning unit multiplexing and aligning wavelengths of optical signals from a plurality of single-mode optical sources of the central base station; a second wavelength aligning unit multiplexing and aligning wavelengths of optical signals transmitted to the remote node from a plurality of single-mode optical sources of the subscriber terminal; and a third wavelength aligning unit demultiplexing and aligning wavelengths of optical signals from the second wavelength aligning unit, the third wavelength aligning unit being included in the central base station. Accordingly, when the wavelengths of passbands of a multiplexer/demultiplexer (MUX/DEMUX) of a remote station change due to a change in the ambient temperature, wavelength tracking is performed by making aligned the wavelengths of optical sources of a central base station, a multiplexer/demultiplexer, and subscriber terminals, thereby minimizing optical channel loss and enabling reliable management of WDM-PON.

公开(公告)号：KR1020070062200A

公开(公告)日：2007-06-15

申请号：KR1020050121985

申请日：2005-12-12

Applicant: 한국전자통신연구원

Inventor： 김병휘 ,  이우람 ,  정윤철 ,  손의승 ,  채장원

IPC: H04B10/2581 ,  H04J14/02 ,  H04B10/00

CPC classification number: H04J14/02 ,  H04J14/0221 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

Abstract: An apparatus and a method for tracking wavelength in a WDM(Wavelength-Division-Multiplexed) PON(Passive Optical Network) are provided to construct a reliable WDM-PON system by stably transmitting a downlink signal and an uplink signal to a subscriber terminal and a central office, respectively, even with respect to a local base station where power is not supplied. The first wavelength aligning unit multiplexes and aligns output wavelengths of plural single mode light sources at a central office. The second wavelength aligning unit multiplexes and aligns output wavelengths of plural single mode light sources received from a subscriber terminal at a local base station. The third wavelength aligning unit demultiplexes and aligns output wavelengths of the second wavelength aligning unit at the central office.

Abstract translation: 提供了一种用于跟踪WDM（波分多路复用）PON（无源光网络）中的波长的装置和方法，通过向用户终端稳定地发送下行链路信号和上行链路信号来构造可靠的WDM-PON系统， 中央办公室，即使是没有供电的本地基站也是如此。 第一波长对准单元在中心局复用并对准多个单模光源的输出波长。 第二波长对准单元将从用户终端接收的多个单模光源的输出波长复用并对齐在本地基站。 第三波长对准单元在中心局对第二波长对准单元的输出波长进行解复用和对齐。

公开(公告)号：KR1020130120266A

公开(公告)日：2013-11-04

申请号：KR1020120043378

申请日：2012-04-25

Applicant: 한국전자통신연구원

Inventor： 권오기 ,  오수환 ,  임영안 ,  권오균 ,  한영탁 ,  백용순 ,  정윤철

IPC: H01S5/12

CPC classification number: H01S5/22 ,  B82Y20/00 ,  H01S5/1039 ,  H01S5/1225 ,  H01S5/1243 ,  H01S5/2213 ,  H01S5/222 ,  H01S5/2231 ,  H01S5/3213 ,  H01S5/34306

Abstract: The present invention suggests a distributed feedback laser diode. The laser diode of the present invention includes: a substrate; a lower clad layer having a diffraction grid on the substrate; an active layer arranged on the lower clad layer; a first upper clad layer arranged on the active layer; a phase shift region arranged on the first upper clad layer in a first direction; and a ridge waveguide layer arranged on the phase shift region in a second direction crossing the first direction.

Abstract translation: 本发明提出一种分布式反馈激光二极管。 本发明的激光二极管包括：基板; 在所述基板上具有衍射栅格的下包层; 布置在下包层上的有源层; 布置在有源层上的第一上包层; 在第一方向上布置在第一上包层上的相移区域; 以及在与所述第一方向交叉的第二方向上配置在所述相移区域上的脊状波导层。