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：US20220180111A1

公开(公告)日：2022-06-09

申请号：US17507789

申请日：2021-10-21

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang-Pil HAN ,  Jaegyu PARK ,  Sungil KIM ,  Minhyup SONG

IPC: G06K9/20 ,  G06F3/01

Abstract: Disclosed is an air screen detector device. The air screen detector device includes a display for displaying an air screen image in one direction by using visible light, an infrared light source disposed on the display to provide infrared light in the same direction as that of the visible light, an infrared image sensor disposed on one side of the display and the infrared light source to receive the infrared light reflected by a finger provided in the air screen image disposed on the other side of the infrared light source, a first multifocal lens disposed between the infrared image sensor and the infrared light source to provide the infrared light to the infrared image sensor, and a visible light filter disposed between the first multifocal lens and the infrared image sensor to remove the visible light.

公开(公告)号：US20220163864A1

公开(公告)日：2022-05-26

申请号：US17485321

申请日：2021-09-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jaegyu PARK ,  Sang-Pil HAN ,  Sungil KIM ,  Minhyup SONG

IPC: G02F1/225 ,  G02F1/035

Abstract: Disclosed is an electro-optic modulator. The electro-optic modulator includes a lower clad layer disposed on a substrate, an optical waveguide disposed on the lower clad layer, traveling-wave electrodes respectively disposed on both sides of the optical waveguide and each having a first distance to the optical waveguide, and ferroelectric blocks disposed between the traveling-wave electrodes and the lower clad layer and each having a second distance to the optical waveguide, which is less than the first distance

公开(公告)号：US20140197425A1

公开(公告)日：2014-07-17

申请号：US14154717

申请日：2014-01-14

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kiwon MOON ,  Han-Cheol RYU ,  Sang-Pil HAN ,  Kyung Hyun PARK

IPC: H01L31/12 ,  H01L31/0304 ,  H01L31/18 ,  H01L31/0232

CPC classification number: H01L31/12 ,  B82Y20/00 ,  G01N21/3581 ,  G01N21/3586 ,  G02F1/0126 ,  G02F2202/12 ,  G02F2202/32 ,  G02F2203/13 ,  H01L25/167 ,  H01L31/02327 ,  H01L31/03046 ,  H01L31/18 ,  H01L2924/0002 ,  H04B10/90 ,  H01L2924/00

Abstract: Provided is a broadband photomixer technology that is a core to generate continuous frequency variable and pulsed terahertz waves. It is possible to enhance light absorptance by applying the transmittance characteristic of a 2D light crystal structure and it is possible to increase the generation efficiency of terahertz waves accordingly. Moreover, it is possible to implement a wide area array type terahertz photomixer by applying an interdigit structure and spatially properly arranging a light crystal structure having various cycles. Accordingly, it is possible to solve difficulty in thermal characteristic and light alignment by mitigating the high light density of a light absorption unit and low photoelectric conversion efficiency is drastically improved. In addition, the radiation pattern of terahertz waves may be electrically controlled through the present invention.

Abstract translation: 提供了一种宽带光混频器技术，其是产生连续频率可变和脉冲太赫兹波的核心。 可以通过应用2D光晶体结构的透射特性来增强光吸收，并且可以相应地提高太赫兹波的产生效率。 此外，可以通过应用叉指结构并在空间上适当地布置具有各种周期的光晶体结构来实现广域阵列型太赫兹光混频器。 因此，可以通过减轻光吸收单元的高光密度来解决热特性和光取向的困难，并且显着提高了低的光电转换效率。 此外，太赫兹波的辐射图可以通过本发明进行电控制。