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1.发明授权公开(公告)号：US10454523B1
公开(公告)日：2019-10-22
申请号：US16162098
申请日：2018-10-16
Inventor： Sungil Kim , Jung Min Park , Minje Song , Minhyup Song , Jae-Sik Sim , Joon Tae Ahn
IPC: H04B1/7156 , H04B1/7136 , H04B7/0413 , G02B6/12
Abstract: A radio frequency signal generation device may include an optical comb generator configured to generate an optical comb signal including a plurality of first wavelength signals having different wavelengths; a pulse shaper configured to attenuate remaining wavelength signals excluding a plurality of second wavelength signals among the plurality of first wavelength signals; an optical-electronic converter configured to generate a radio frequency signal including a carrier frequency signal from the plurality of second wavelength signals outputted from the pulse shaper; and a pulse shaping controller configured to control the pulse shaper such that a carrier frequency of the carrier frequency signal varies according to a frequency hopping pattern.
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公开(公告)号：US20210328681A1
公开(公告)日：2021-10-21
申请号：US17219269
申请日：2021-03-31
Inventor： Sang-Pil Han , Sungil Kim , Jaegyu Park , Minhyup Song
IPC: H04B10/516 , H04B10/54 , H04B10/548 , H04B10/50
Abstract: Disclosed is a multi-channel optical signal generating apparatus, which includes a CW laser that generates a single optical signal, an optical signal processor unit that processes the single optical signal, an oscillator that generates an electrical signal, and an electrical signal processor unit that generates a modulation signal, based on the electrical signal, and the optical signal processor unit includes ‘n’ optical circulators, at least one optical intensity modulator, (m-1) optical phase modulators, and ‘n’ BiODLs, the electrical signal processor unit includes a RF power divider which divides the electrical signal, and ‘m’ RF power amplifiers, the RF power divider divides the electrical signal into ‘m’ divided electrical signals, and the optical signal processor unit modulates and outputs the single optical signal by the at least one optical intensity modulator and the (m-1) optical phase modulators, based on the ‘m’ divided electrical signals divided from the RF power divider.
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公开(公告)号：US10763969B2
公开(公告)日：2020-09-01
申请号：US16439294
申请日：2019-06-12
Inventor： Sungil Kim , Jung Min Park , Minje Song , Minhyup Song , Jae-Sik Sim , Joon Tae Ahn
IPC: H04B10/04 , H04B10/508 , H04B10/564 , H04L25/03
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.
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Patent Agency Ranking
公开(公告)号：US11961270B2
公开(公告)日：2024-04-16
申请号：US17507789
申请日：2021-10-21
Inventor： Sang-Pil Han , Jaegyu Park , Sungil Kim , Minhyup Song
IPC: G06F3/01 , G06V10/147
CPC classification number: G06V10/147 , G06F3/011
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.
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公开(公告)号：US11556041B2
公开(公告)日：2023-01-17
申请号：US17485321
申请日：2021-09-24
Inventor： Jaegyu Park , Sang-Pil Han , Sungil Kim , Minhyup Song
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.
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公开(公告)号：US11476945B2
公开(公告)日：2022-10-18
申请号：US17219269
申请日：2021-03-31
Inventor： Sang-Pil Han , Sungil Kim , Jaegyu Park , Minhyup Song
IPC: H04B10/516 , H04B10/50 , H04B10/548 , H04B10/54
Abstract: Disclosed is a multi-channel optical signal generating apparatus, which includes a CW laser that generates a single optical signal, an optical signal processor unit that processes the single optical signal, an oscillator that generates an electrical signal, and an electrical signal processor unit that generates a modulation signal, based on the electrical signal, and the optical signal processor unit includes ‘n’ optical circulators, at least one optical intensity modulator, (m-1) optical phase modulators, and ‘n’ BiODLs, the electrical signal processor unit includes a RF power divider which divides the electrical signal, and ‘m’ RF power amplifiers, the RF power divider divides the electrical signal into ‘m’ divided electrical signals, and the optical signal processor unit modulates and outputs the single optical signal by the at least one optical intensity modulator and the (m-1) optical phase modulators, based on the ‘m’ divided electrical signals divided from the RF power divider.
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公开(公告)号：US20240353728A1
公开(公告)日：2024-10-24
申请号：US18412930
申请日：2024-01-15
Inventor： Jaegyu PARK , Sungil Kim , Kisoo Kim
IPC: G02F1/21
CPC classification number: G02F1/212
Abstract: Provided is a Mach-Zehnder optical modulator. The optical modulator thereof includes an input waveguide on one side of a substrate, an output waveguide on the other side of the substrate, an optical power splitter between the input waveguide and the output waveguide, an optical power combiner between the optical power splitter and the output waveguide, branch waveguides between the optical power splitter and the optical power combiner, and electrodes provided on the outer periphery of the branch waveguides and between the branch waveguides, and multi-mode interferers provided between the electrodes, and connected in series to the branch waveguides.
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公开(公告)号：US11307351B2
公开(公告)日：2022-04-19
申请号：US16704931
申请日：2019-12-05
Inventor： Sang-Pil Han , Minhyup Song , Sungil Kim
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.
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