公开(公告)号：US20230227960A1

公开(公告)日：2023-07-20

申请号：US17968126

申请日：2022-10-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： O-Kyun KWON ,  Namje KIM ,  Ho Sung KIM ,  Miran PARK ,  SEUNGCHUL LEE ,  Won Seok HAN

IPC: C23C14/04 ,  G02B6/132

CPC classification number: C23C14/042 ,  G02B6/132 ,  G02B2006/12173

Abstract: Provided is a method of manufacturing an optical integrated device. The method includes forming a lower clad layer on a substrate, forming a plurality of mask patterns arranged in one direction on the lower clad layer, forming a core layer on a portion of the lower clad layer by a selective area growth method using the mask patterns as deposition masks, and forming an upper clad layer on the core layers, wherein the mask patterns have different widths or include mask layers of different materials.

公开(公告)号：US20200212652A1

公开(公告)日：2020-07-02

申请号：US16561420

申请日：2019-09-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Namje KIM ,  O-Kyun KWON ,  Miran PARK ,  Tae-Soo KIM ,  Shinmo AN ,  Won Seok HAN

IPC: H01S5/12 ,  H01S5/028 ,  H01S5/026 ,  H01S5/042 ,  H01S5/024

Abstract: Provided is a quarter-wavelength shifted distributed feedback laser diode. The laser diode includes a substrate having a laser diode section and a phase adjustment section, a waveguide layer on the substrate, a clad layer on the waveguide layer, a grating disposed in the clad layer in the laser diode section, an anti-reflection coating disposed on one side walls, of the substrate, the waveguide layer, and the clad layer, adjacent to the laser diode section, and a high reflection coating disposed on the other side walls, of the substrate, the waveguide layer, and the clad layer, adjacent to the phase adjustment section.

公开(公告)号：US20140183441A1

公开(公告)日：2014-07-03

申请号：US14063361

申请日：2013-10-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kyung Hyun PARK ,  Sang-Pil HAN ,  Jeong Woo PARK ,  Han-Cheol RYU ,  Kiwon MOON ,  Namje KIM ,  Hyunsung KO

IPC: H01L33/34 ,  H01L31/028

CPC classification number: H01L31/028 ,  H01L31/085

Abstract: Provided is a terahertz wave generating/detecting apparatus and a method for manufacturing the same. The terahertz wave generating/detecting apparatus includes; a substrate having an active region and a transmitting region; a lower metal layer extending in a first direction on the active region and the transmitting region of the substrate; a graphene layer disposed on the lower metal layer on the active region; and upper metal layers extending in the first direction on the graphene layer of the active region and the substrate in the transmission region, wherein a terahertz wave is generated or amplified by a surface plasmon polariton that is induced on a boundary surface between the graphene layer and the lower metal layer by beated laser light applied to the graphene layer and the metal layer.

Abstract translation: 提供一种太赫兹波发生/检测装置及其制造方法。 太赫兹波发生/检测装置包括： 具有有源区和发射区的衬底; 在所述有源区域和所述基板的透射区域上沿第一方向延伸的下金属层; 设置在有源区上的下金属层上的石墨烯层; 以及在有源区域的石墨烯层和透射区域中的衬底的第一方向上延伸的上金属层，其中通过在石墨烯层和石墨烯层之间的边界表面上诱导的表面等离子体激元产生或放大太赫兹波 通过施加到石墨烯层和金属层上的激光的下部金属层。

公开(公告)号：US20140166881A1

公开(公告)日：2014-06-19

申请号：US14049059

申请日：2013-10-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang-Pil HAN ,  Kyung Hyun PARK ,  Namje KIM ,  Han-Cheol RYU ,  Jeong Woo PARK ,  Hyunsung KO ,  Kiwon MOON

IPC: F21K99/00

CPC classification number: G01N21/3581

Abstract: A terahertz wave generating module includes a bidirectional light source which provides a first dual-mode beam in a first direction and a second dual-mode beam in a second direction; a forward lens unit which focuses the first dual-mode beam; a photomixer unit which converts the first dual-mode beam focused by the forward lens unit into a terahertz wave; a backward lens unit which focuses the second dual-mode beam; and a light output unit which uses the second dual-mode beam focused by the backward lens unit as a light signal, wherein the bidirectional light source, the forward lens unit, the photomixer unit, the backward lens unit, and the light output unit are integrated in a housing.

Abstract translation: 太赫兹波发生模块包括双向光源，其在第一方向上提供第一双模光束，而在第二方向上提供第二双模光束; 聚焦第一双模光束的前透镜单元; 将由前向透镜单元聚焦的第一双模光束转换为太赫兹波的光混合器单元; 聚焦第二双模光束的反向透镜单元; 以及使用由后向透镜单元聚焦的第二双模光束作为光信号的光输出单元，其中双向光源，前透镜单元，光混合器单元，后透镜单元和光输出单元是 融入住房。

公开(公告)号：US20240313503A1

公开(公告)日：2024-09-19

申请号：US18606448

申请日：2024-03-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Namje KIM ,  O-Kyun KWON ,  Ho Sung KIM ,  Miran PARK ,  Seungchul LEE

IPC: H01S5/026 ,  H01S5/042 ,  H01S5/12

CPC classification number: H01S5/0265 ,  H01S5/04256 ,  H01S5/12

Abstract: Provided is an electro-absorption modulated lasers with identical-active layer. The lasers include a substrate having a passive waveguide region, an LD region on one side of the passive waveguide region, and an EAM region on the other side of the passive waveguide region, an active layer provided on the substrate and extending from the LD region to the EAM region, a grating layer provided on the active layer, a clad layer provided on the grating layer, and electrodes provided in the LD region and the EAM region of the clad layer.

公开(公告)号：US20190165863A1

公开(公告)日：2019-05-30

申请号：US15855825

申请日：2017-12-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： O-Kyun KWON ,  Namje KIM ,  Miran PARK ,  Shinmo AN ,  Won Seok HAN

IPC: H04B10/54 ,  H04B10/2575

Abstract: An optical signal generating apparatus according to an embodiment of the inventive concept includes a first optical intensity modulator for modulating a first optical signal to generate a 2N-level (where N is a positive integer) second optical signal in the form of a binary signal, a first optical amplifier for amplifying the second optical signal to generate a third optical signal, and a second optical intensity modulator for modulating the third optical signal to generate a 2N+1-level fourth optical signal in the form of a binary signal. The optical signal generating apparatus according to an embodiment of the inventive concept may generate a low-cost, high-quality optical signal by using an optical device to generate a multi-level optical signal. Additionally, the optical signal generating apparatus according to an embodiment of the inventive concept may generate a multi-level optical signal by sequentially performing optical modulation and optical amplification operations.

公开(公告)号：US20140175306A1

公开(公告)日：2014-06-26

申请号：US14023257

申请日：2013-09-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Namje KIM ,  Sang-Pil HAN ,  Kyung Hyun PARK ,  Han-Cheol RYU ,  Hyunsung KO ,  Jeong Woo PARK

IPC: G01J9/04

CPC classification number: G01J9/04

Abstract: The inventive concept relates to a beating signal monitoring module and a terahertz wave generation device and an optical signal monitoring device that including the beating signal monitoring module. The beating signal monitoring module includes a nonlinear unit generating an optical signal including a FWM light in response to a beating signal generated from a first light and a second light; a filter unit separating the FWM light from the optical signal and outputting the separated FWM light; and a monitoring unit monitoring the beating signal using the separated FWM light. The beating signal monitoring module and a terahertz wave generation device and an optical signal monitoring device that including the beating signal monitoring module can effectively monitor a beating signal being generated by two lasers using a Four Wave Mixing signal.

Abstract translation: 本发明构思涉及一种包括跳动信号监测模块的跳动信号监测模块和太赫兹波发生装置以及光信号监测装置。 跳动信号监控模块包括：非线性单元，响应于从第一光和第二光产生的拍打信号，产生包括FWM光的光信号; 滤波器单元，将FWM光与光信号分离，并输出分离的FWM光; 以及监视单元，使用分离的FWM光监视拍动信号。 跳动信号监测模块和太赫兹波发生装置以及包括跳动信号监测模块的光信号监测装置可以使用四波混频信号有效地监测由两个激光器产生的跳动信号。

公开(公告)号：US20240356303A1

公开(公告)日：2024-10-24

申请号：US18638137

申请日：2024-04-17

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seungchul LEE ,  Namje KIM ,  O-Kyun KWON ,  Miran PARK

IPC: H01S5/026 ,  H01S5/343

CPC classification number: H01S5/026 ,  H01S5/34313

Abstract: Disclosed are a photonic integrated circuit device and a fabrication method thereof, wherein the fabrication method includes forming an active layer on a substrate having a passive waveguide region, an LD region, and an EAM region, forming a grating layer, forming a first upper clad layer, forming a passivation layer, forming a mask pattern, forming a vacancy generation layer, performing a rapid thermal process to provide a first vacancy activation region in the active layer, removing the vacancy generation layer, the mask pattern, and the passivation layer, forming a second upper clad layer, and forming electrodes.

公开(公告)号：US20140061475A1

公开(公告)日：2014-03-06

申请号：US13802198

申请日：2013-03-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Han-Cheol RYU ,  Namje KIM ,  Sang-Pil Han ,  Kyung Hyun PARK ,  Hyunsung KO ,  Jeong Woo PARK

IPC: G01B11/06

CPC classification number: G01B11/06

Abstract: A contactless thickness measuring apparatus is provided which includes an terahertz transmitter configured to receive the first optical path signal from the coupler and to generate a terahertz continuous wave using the first optical signal and an applied bias; an optical delay line configured to delay the second optical path signal output from the coupler; and an terahertz receiver configured to receive the terahertz continuous wave penetrating a sample and to detect an optical current using the terahertz continuous wave and the second optical path signal delayed. A thickness of the sample is a value corresponding to the optical current which phase value becomes a constant regardless of a plurality of measurement frequencies.

Abstract translation: 提供了一种非接触式厚度测量装置，其包括太赫兹发射器，其被配置为从耦合器接收第一光路信号并使用第一光信号和施加的偏压产生太赫兹连续波; 光延迟线，被配置为延迟从耦合器输出的第二光路信号; 以及太赫兹接收器，被配置为接收穿透样本的太赫兹连续波，并且使用太赫兹连续波和第二光路信号延迟来检测光电流。 样品的厚度是与光电流相对应的值，该相位值成为常数，而与多个测量频率无关。