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：US20240151918A1

公开(公告)日：2024-05-09

申请号：US18487513

申请日：2023-10-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: G02B6/42 ,  H04B10/50

CPC classification number: G02B6/4279 ,  G02B6/4257 ,  G02B6/428 ,  H04B10/504

Abstract: Disclosed are a sub-mount, an optical modulation module, and an optical communication device. The sub-mount includes a mount substrate, a signal electrode extending in a first direction on the mount substrate, and a ground electrode separated from the signal electrode and disposed on the mount substrate. Here, the ground electrode includes a lower electrode disposed on a bottom surface of the mount substrate and upper electrodes disposed on one side of the mount substrate and connected to the lower electrode through a side surface or the inside of the mount substrate.

公开(公告)号：US20200183084A1

公开(公告)日：2020-06-11

申请号：US16704931

申请日：2019-12-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: G02B6/12 ,  G02B27/12

Abstract: Provided are an optical waveform shaping apparatus and an optical waveform shaping method. According to an embodiment, the optical waveform shaping apparatus includes a multiplexer/demultiplexer(D/MUX) unit demultiplexing an optical signal in which optical signals of a plurality of wavelengths are multiplexed, a micro lens system refracting the demultiplexed optical signal into a collimated beam of light, and a wavelength level controller unit shaping a waveform of the optical signal. The wavelength level controller unit includes a 2D LCoS for adjusting and reflecting an amplitude or a phase value of the demultiplexed optical signal to have a distribution that is desired for each cell, and a controller for controlling the distribution.

公开(公告)号：US20190379459A1

公开(公告)日：2019-12-12

申请号：US16439294

申请日：2019-06-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sungil KIM ,  Jung Min PARK ,  Minje SONG ,  minhyup SONG ,  Jae-Sik SIM ,  Joon Tae AHN

IPC: H04B10/508 ,  H04L25/03 ,  H04B10/564

Abstract: An embodiment of the inventive concept includes an optical signal generating circuit, a controlling circuit, a waveform shaping circuit, and an output circuit. The optical signal generating circuit generates a first optical signal including pulses. The controlling circuit generates a control signal indicating a first pulse to be attenuated in magnitude among the pulses. The waveform shaping circuit attenuates a magnitude of the first pulse based on the control signal and the first optical signal, and generates a second optical signal including pulses corresponding to the pulses included in the first optical signal and the first pulse having the attenuated magnitude. The output circuit outputs an electric signal of bands corresponding to differences between frequencies of the pulses included in the second optical signal based on the second optical signal. A band corresponding to the first pulse among the bands of the electric signal is adjusted as the magnitude of the first pulse is attenuated.