Patents by Inventor Sang Pil Han
Sang Pil Han has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240151918Abstract: 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.Type: ApplicationFiled: October 16, 2023Publication date: May 9, 2024Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jaegyu PARK, Sungil KIM, Sang-Pil HAN
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Patent number: 11961270Abstract: 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.Type: GrantFiled: October 21, 2021Date of Patent: April 16, 2024Assignee: Electronics and Telecommunications Research InstituteInventors: Sang-Pil Han, Jaegyu Park, Sungil Kim, Minhyup Song
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Patent number: 11556041Abstract: 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.Type: GrantFiled: September 24, 2021Date of Patent: January 17, 2023Assignee: Electronics and Telecommunications Research InstituteInventors: Jaegyu Park, Sang-Pil Han, Sungil Kim, Minhyup Song
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Patent number: 11476945Abstract: 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.Type: GrantFiled: March 31, 2021Date of Patent: October 18, 2022Assignee: Electronics and Telecommunications Research InstituteInventors: Sang-Pil Han, Sungil Kim, Jaegyu Park, Minhyup Song
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Publication number: 20220180111Abstract: 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.Type: ApplicationFiled: October 21, 2021Publication date: June 9, 2022Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Sang-Pil HAN, Jaegyu PARK, Sungil KIM, Minhyup SONG
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Publication number: 20220163864Abstract: Disclosed is an electro-optic modulator.Type: ApplicationFiled: September 24, 2021Publication date: May 26, 2022Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jaegyu PARK, Sang-Pil HAN, Sungil KIM, Minhyup SONG
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Patent number: 11307351Abstract: 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.Type: GrantFiled: December 5, 2019Date of Patent: April 19, 2022Assignee: Electronics and Telecommunications Research InstituteInventors: Sang-Pil Han, Minhyup Song, Sungil Kim
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Publication number: 20210328681Abstract: 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.Type: ApplicationFiled: March 31, 2021Publication date: October 21, 2021Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Sang-Pil Han, Sungil Kim, Jaegyu Park, Minhyup Song
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Patent number: 10732045Abstract: An image acquisition apparatus including a beam source, a beam expander, a beam splitter, an interferometer reference arm, a sample, a beam diffuser, a telecentric f-? lens, a beam scanner, and a beam detector uses a terahertz wave to acquire a surface image and a depth image of the sample.Type: GrantFiled: September 5, 2018Date of Patent: August 4, 2020Assignee: Electronics and Telecommunications Research InstituteInventors: Sang-Pil Han, Jun Hwan Shin, Il Min Lee, Kyung Hyun Park
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Publication number: 20200183084Abstract: 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.Type: ApplicationFiled: December 5, 2019Publication date: June 11, 2020Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Sang-Pil HAN, Minhyup SONG, Sungil KIM
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Publication number: 20190285475Abstract: An image acquisition apparatus including a beam source, a beam expander, a beam splitter, an interferometer, a sample, a beam diffuser, a telecentric f-? lens, a beam scanner, and a beam detector uses a terahertz wave to acquire a surface image and a depth image of the sample.Type: ApplicationFiled: September 5, 2018Publication date: September 19, 2019Applicant: Electronics and Telecommunications Research InstituteInventors: Sang-Pil HAN, Jun Hwan SHIN, Il Min LEE, Kyung Hyun PARK
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Patent number: 10147832Abstract: The present disclosure relates to a terahertz wave generation apparatus capable of wavefront control. A terahertz wave generating apparatus according to an exemplary embodiment comprises a photoconductive substrate; and a plurality of terahertz wave generating unit elements arranged in a two-dimensional array on the photoconductive substrate. Also, the terahertz wave generating unit elements comprise a plurality of first electrodes arranged in the two-dimensional array on the photoconductive substrate and respectively connected to a plurality of first electrode pads, and at least one second electrode formed on the photoconductive substrate so as to face the first electrodes.Type: GrantFiled: March 2, 2017Date of Patent: December 4, 2018Assignee: ELECTRONICS & TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Ki Won Moon, Kyung Hyun Park, Il Min Lee, Sang-Pil Han, Eui Su Lee
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Patent number: 10082627Abstract: An apparatus providing a terahertz (THz) wave may comprise at least one THz wave generator each of which generates a THz wave; at least one first phase adjuster adjusting a phase of the generated THz wave; at least one waveguide part receiving and combining the at least one phase-adjusted THz wave radiated from the at least one first phase adjuster, and guiding the combined THz wave; at least one second phase adjuster adjusting a phase of the combined THz wave from the at least one waveguide part, which is connected to the at least one waveguide part or disposed in a portion of the at least one waveguide part; and an output module outputting the THz wave guided from the at least one waveguide part.Type: GrantFiled: November 9, 2017Date of Patent: September 25, 2018Assignee: Electronics and Telecommunications Research InstituteInventors: Kyung Hyun Park, Il Min Lee, Eui Su Lee, Ho Jin Lee, Sang Pil Han, Hyun Soo Kim, Ki Won Moon, Dong Woo Park
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Publication number: 20180136397Abstract: An apparatus providing a terahertz (THz) wave may comprise at least one THz wave generator each of which generates a THz wave; at least one first phase adjuster adjusting a phase of the generated THz wave; at least one waveguide part receiving and combining the at least one phase-adjusted THz wave radiated from the at least one first phase adjuster, and guiding the combined THz wave; at least one second phase adjuster adjusting a phase of the combined THz wave from the at least one waveguide part, which is connected to the at least one waveguide part or disposed in a portion of the at least one waveguide part; and an output module outputting the THz wave guided from the at least one waveguide part.Type: ApplicationFiled: November 9, 2017Publication date: May 17, 2018Applicant: Electronics and Telecommunications Research InstituteInventors: Kyung Hyun PARK, Il Min LEE, Eui Su LEE, Ho Jin LEE, Sang Pil HAN, Hyun Soo KIM, Ki Won MOON, Dong Woo PARK
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APPRATUS FOR GENERATING TERAHERTZ WAVE AND METHOD FOR CONTROLLING TERAHERTZ WAVEFRONT USING THE SAME
Publication number: 20170256665Abstract: The present disclosure relates to a terahertz wave generation apparatus capable of wavefront control. A terahertz wave generating apparatus according to an exemplary embodiment comprises a photoconductive substrate; and a plurality of terahertz wave generating unit elements arranged in a two-dimensional array on the photoconductive substrate. Also, the terahertz wave generating unit elements comprise a plurality of first electrodes arranged in the two-dimensional array on the photoconductive substrate and respectively connected to a plurality of first electrode pads, and at least one second electrode formed on the photoconductive substrate so as to face the first electrodes.Type: ApplicationFiled: March 2, 2017Publication date: September 7, 2017Applicant: Electronics & Telecommunication Research InstituteInventors: Ki Won Moon, Kyung Hyun Park, Il Min Lee, Sang-Pil Han, Eui Su Lee -
Patent number: 9618823Abstract: Disclosed herein is a photomixer and method of manufacturing the photomixer which can fundamentally solve the existing restrictive factors of a PCA and a photomixer which are core parts of a conventional broadband terahertz spectroscopy system. The presented photomixer includes an active layer formed on a top surface of a substrate, the active layer being formed on an area on which light is incident, and a thermal conductive layer formed on the top surface of the substrate, the thermal conductive layer being formed on an area other than the area on which light is incident. The active layer is formed to have a mesa cross section, and the thermal conductive layer is regrown on an area other than the area on which light is incident using an MOCVD method, and has a flattened surface.Type: GrantFiled: September 17, 2013Date of Patent: April 11, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Kyung-Hyun Park, Nam-Je Kim, Hyun-Sung Ko, Dong-Hun Lee, Sang-Pil Han, Han-Cheol Ryu, Jeong-Woo Park, Ki-Won Moon, Dae-Yong Kim
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Patent number: 9553678Abstract: Disclosed herein is an interconnection apparatus and method using terahertz waves. The interconnection apparatus using terahertz waves according to the present invention includes a first terahertz wave generation unit for generating a first transmission terahertz wave, a center frequency of which is a first center frequency, using photomixing. A second terahertz wave generation unit generates a second transmission terahertz wave, a center frequency of which is a second center frequency different from the first center frequency. A first terahertz wave detection unit detects a first reception terahertz wave corresponding to the first transmission terahertz wave. A second terahertz wave detection unit detects a second reception terahertz wave corresponding to the second transmission terahertz wave.Type: GrantFiled: May 31, 2013Date of Patent: January 24, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Kyung-Hyun Park, Han-Cheol Ryu, Jeong-Woo Park, Sang-Pil Han, Nam-Je Kim
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Patent number: 9507109Abstract: Provided is an optical module. The optical module includes: an optical bench having a first trench of a first depth and a second trench of a second depth that is lower than the first depth; a lens in the first trench of the optical bench; at least one semiconductor chip in the second trench of the optical bench; and a flexible printed circuit board covering an upper surface of the optical bench except for the first and second trenches, wherein the optical bench is a metal optical bench or a silicon optical bench.Type: GrantFiled: January 5, 2016Date of Patent: November 29, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young-Tak Han, Jang Uk Shin, Sang-Pil Han, Sang Ho Park, Yongsoon Baek
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Patent number: 9410851Abstract: 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.Type: GrantFiled: September 10, 2013Date of Patent: August 9, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Namje Kim, Sang-Pil Han, Kyung Hyun Park, Han-Cheol Ryu, Hyunsung Ko, Jeong Woo Park
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Patent number: 9354484Abstract: Provided herein is terahertz continuous wave emitting device having: a plurality of laser light sources generating a plurality of laser lights; and an absorption area formed between the plurality of laser light sources in order to adjust interaction of the plurality of laser lights, wherein the absorption area is configured to have a photo diode, an antenna integrated into the photo diode.Type: GrantFiled: September 9, 2014Date of Patent: May 31, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Nam Je Kim, Kyung Hyun Park, Sang Pil Han, Ki Won Moon, Jeong Woo Park