Patents by Inventor Kyung-hyun Park
Kyung-hyun Park 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: 20130320215Abstract: 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: ApplicationFiled: May 31, 2013Publication date: December 5, 2013Inventors: Kyung-Hyun PARK, Han-Cheol RYU, Jeong-Woo PARK, Sang-Pil HAN, Nam-Je KIM
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Patent number: 8599893Abstract: Disclosed is a terahertz wave generator which includes a dual mode semiconductor laser device configured to generate at least two laser lights having different wavelengths and to beat the generated laser lights; and a photo mixer formed on the same chip as the dual mode semiconductor laser device and to generate a continuous terahertz wave when excited by the beat laser light.Type: GrantFiled: September 6, 2011Date of Patent: December 3, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Namje Kim, Kyung Hyun Park, Young Ahn Leem, Hyunsung Ko, Sang-Pil Han, Chul-Wook Lee, Dong-Hun Lee
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Patent number: 8476592Abstract: Provided is a terahertz wave apparatus. The terahertz wave apparatus includes: a wavelength-fixed laser emitting a first laser light having a fixed first wavelength; a wavelength-swept laser emitting a second laser light having a tunable second wavelength; a coupler coupling the first laser light with the second laser light; and a generator converting a mixed light emitted from the coupler into a terahertz wave, wherein a frequency of the terahertz wave is continuously tunable.Type: GrantFiled: October 20, 2010Date of Patent: July 2, 2013Assignees: Electronics and Telecommunications Research Institute, Korea Research Institute of Standards and ScienceInventors: Min Yong Jeon, Kyung Hyun Park, Dae-Su Yee
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Publication number: 20130161541Abstract: Disclosed is a terahertz wave generator which includes a first light source outputting a first light having a first frequency; a second light source outputting a second light having a second frequency different from the first frequency; a second harmonic generation unit performing second harmonic conversion on the first and second lights to generate a third light and a fourth light; and a photomixer converting a mixing light of the third and fourth lights into a terahertz wave alternating signal and outputting a terahertz wave.Type: ApplicationFiled: September 13, 2012Publication date: June 27, 2013Applicant: Electronics and Telecommunications Research InstitueInventors: Namje KIM, Kyung Hyun Park, Sang-Pil Han, Hyunsung Ko, Jeong Woo Park, Han-Cheol Ryu
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Patent number: 8320763Abstract: In the manufacture and application of a PLC-ECL type wavelength tunable light source, provided is a wavelength tunable mechanism with improved performance and stability, a light source with improved packaging performance and mass productivity, and a light source applied to a WDM-PON with initialization and stabilization functions. The wavelength tunable light source having a PLC (planar lightwave circuit)-ECL (external cavity laser) structure includes a first housing in which a semiconductor optical gain medium is mounted, a second housing in which a PLC device is mounted, and a third housing in which an optical fiber is mounted. The first, second, and third housings make an optical axis alignment through an optical coupling lens and combined in a laser welding method.Type: GrantFiled: October 31, 2007Date of Patent: November 27, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Byoung-Whi Kim, Manyong Park, Kyung-Hyun Park, Hyun-Ho Yun
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Patent number: 8213478Abstract: Provided is a laser device. In the laser device, an active layer is connected to a stem core of a 1×2 splitter on a substrate, a first diffraction grating is coupled to a first twig core of the 1×2 splitter, and a second diffraction grating is coupled to a second twig core of the 1×2 splitter. An active layer-micro heater is designed to supply heat to the active layer. First and second micro heaters are designed to supply heats to the first and second diffraction gratings, respectively, thereby varying a Bragg wavelength.Type: GrantFiled: August 13, 2010Date of Patent: July 3, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Kyung Hyun Park, Namje Kim, Young Ahn Leem, Sang-Pil Han, Chul-Wook Lee, Jaeheon Shin, Eundeok Sim, Yongsoon Baek
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Publication number: 20120153161Abstract: Provided are a THz-wave generation/detection module and a device including the same, which increase heating efficiency and are miniaturized. The module includes a photomixer chip, a lens, a PCB, and a package. The photomixer chip includes an active layer, an antenna, and a plurality of electrode pads. The lens is disposed on the photomixer chip. The PCB includes a plurality of solder balls connected to the electrode pads, under the photomixer chip. The package surrounds a bottom and side of the PCB, and dissipates heating of the active layer, which is transferred from the electrode pad of the photomixer chip to the PCB, to outside.Type: ApplicationFiled: December 2, 2011Publication date: June 21, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Sang-Pil Han, Kyung Hyun Park, Hyunsung Ko, Namje Kim, Chul-Wook Lee, Dong-Hun Lee, Young Ahn Leem
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Publication number: 20120147907Abstract: Disclosed is a terahertz wave generator which includes a dual mode semiconductor laser device configured to generate at least two laser lights having different wavelengths and to beat the generated laser lights; and a photo mixer formed on the same chip as the dual mode semiconductor laser device and to generate a continuous terahertz wave when excited by the beat laser light.Type: ApplicationFiled: September 6, 2011Publication date: June 14, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Namje KIM, Kyung Hyun PARK, Young Ahn LEEM, Hyunsung KO, Sang-Pil HAN, Chul-Wook LEE, Dong-Hun LEE
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Patent number: 8149890Abstract: Provided is a multiple distributed feedback laser device which includes a first distributed feedback region, a modulation region, a second distributed feedback region, and an amplification region. An active layer is disposed on the substrate of the first distributed feedback region, the modulation region, the second distributed feedback region, and the amplification region. A first diffraction grating is disposed in the first distributed feedback region to be coupled to the active layer in the first distributed feedback region. A second diffraction grating is disposed in the second distributed feedback region to be coupled to the active layer in the second distributed feedback region. The multiple distributed feedback laser device further includes a first micro heater configured to supply heat to the first diffraction grating and a second micro heater configured to supply heat to the second diffraction grating.Type: GrantFiled: December 29, 2010Date of Patent: April 3, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Kyung Hyun Park, Namje Kim, Young Ahn Leem, Sang-Pil Han, Hyunsung Ko, Chul-Wook Lee, Dong-Hun Lee, Jaeheon Shin, Eundeok Sim, Yongsoon Baek
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Publication number: 20120068090Abstract: Provided are a frequency tunable terahertz transceiver and a method of manufacturing a dual wavelength laser. The frequency tunable terahertz transceiver includes: a dual wavelength laser including two distributed feedback lasers that are manufactured in one substrate and output optical signals of respectively different wavelengths; and an optical device receiving the outputted optical signals to generate a terahertz wave.Type: ApplicationFiled: January 10, 2011Publication date: March 22, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventor: Kyung Hyun PARK
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Publication number: 20120051386Abstract: Provided are a dual mode semiconductor laser and a terahertz wave apparatus using the same. The dual mode semiconductor laser includes a distributed feedback laser structure section including a first diffraction grating on a substrate and a distributed Bragg reflector laser structure section including a second diffraction grating on the substrate. A first wavelength oscillated by the distributed feedback laser structure section and a second wavelength oscillated by the distributed Bragg reflector laser structure section are different from each other, and the distributed feedback laser structure section and the distributed Bragg reflector laser structure section share the same gain medium with each other.Type: ApplicationFiled: February 8, 2011Publication date: March 1, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Namje KIM, Kyung Hyun PARK, Young Ahn LEEM, Chul-Wook LEE, Sang-Pil HAN, Dong-Hun LEE, Min Yong JEON
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Patent number: 8039802Abstract: Provided are an apparatus for generating/detecting terahertz wave and a method of manufacturing the same. The apparatus includes a substrate, a photo conductive layer, a first electrode and a second electrode, and a lens. The photo conductive layer is formed on an entire surface of the substrate. The first electrode and a second electrode formed on the photo conductive layer. The first and second electrodes are spaced from each other by a certain gap. The lens is formed on the first and second electrodes. The lens is filled in the gap between the first and second electrodes.Type: GrantFiled: April 21, 2010Date of Patent: October 18, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Jaeheon Shin, Kyung Hyun Park, Namje Kim, Sang-Pil Han, Chul-Wook Lee, Eundeok Sim, Yongsoon Baek
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Publication number: 20110192978Abstract: Provided is a terahertz wave apparatus. The terahertz wave apparatus includes: a wavelength-fixed laser emitting a first laser light having a fixed first wavelength; a wavelength-swept laser emitting a second laser light having a tunable second wavelength; a coupler coupling the first laser light with the second laser light; and a generator converting a mixed light emitted from the coupler into a terahertz wave, wherein a frequency of the terahertz wave is continuously tunable.Type: ApplicationFiled: October 20, 2010Publication date: August 11, 2011Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, KOREA RESEARCH INSTITUTE OF STANDARD AND SCIENCEInventors: Min Yong JEON, Kyung Hyun PARK, Dae-Su YEE
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Publication number: 20110150018Abstract: Provided is a laser device. In the laser device, an active layer is connected to a stem core of a 1×2 splitter on a substrate, a first diffraction grating is coupled to a first twig core of the 1×2 splitter, and a second diffraction grating is coupled to a second twig core of the 1×2 splitter. An active layer-micro heater is designed to supply heat to the active layer. First and second micro heaters are designed to supply heats to the first and second diffraction gratings, respectively, thereby varying a Bragg wavelength.Type: ApplicationFiled: August 13, 2010Publication date: June 23, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Kyung Hyun PARK, Namje Kim, Young Ahn Leem, Sang-Pil Han, Chul-Wook Lee, Jaeheon Shin, Eundeok Sim, Yongsoon Baek
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Publication number: 20110149368Abstract: Provided are a photomixer module and a method of generating a terahertz wave. The photomixer module includes a semiconductor optical amplifier amplifying incident laser light and a photomixer that is excited by the amplified laser light to generate a continuous terahertz wave. The photomixer is formed as a single module together with the semiconductor optical amplifier.Type: ApplicationFiled: May 26, 2010Publication date: June 23, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Namje KIM, Kyung Hyun Park, Young Ahn Leem, Sang-Pil Han, Chul-Wook Lee, Eundeok Sim, Jaeheon Shin
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Publication number: 20110142082Abstract: Provided is a fiber laser generating Terahertz wave. The fiber laser comprises: a light source generating a laser beam as a pump light; first and second resonators first and second resonators first and second resonators resonating the laser beam into first and second wavelengths; and a coupler separating and supplying the laser beam generated in the light source to the first and second resonators and again feeding back the laser beam having the first and second wavelengths resonated respectively in the first and second resonators to the light source.Type: ApplicationFiled: October 20, 2010Publication date: June 16, 2011Applicant: ELECTRONIC AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Min Yong JEON, Kyung Hyun Park, Namje Kim, Young Ahn Leem, Sang-Pil Han, Yongsoon Baek, Jaeheon Shin
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Patent number: 7933524Abstract: Provided are an apparatus for and a method of generating millimeter waves, in which millimeter-wave generation and frequency up-conversion can be achieved at the same time using a single device. The apparatus includes a mode-locking laser diode (LD) which has a distributed feedback (DFB) sector and a gain sector and generates high-frequency optical pulses through a passive mode locking process, a modulator which modulates an external optical signal using an electric signal and injects the modulated optical signal to the mode-locking LD to lock the optical pulses, and a radio frequency (RF) locking signaling unit which injects the electric signal to the modulator.Type: GrantFiled: August 8, 2006Date of Patent: April 26, 2011Assignees: Electronics and Telecommunications Research Institute, Industry-Academic Cooperation Foundation, Yonsei-UniversityInventors: Kyung Hyun Park, Young Ahn Leem, Kwang Hyun Lee, Woo Young Choi
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Publication number: 20110090932Abstract: Provided is a multiple distributed feedback laser device which includes a first distributed feedback region, a modulation region, a second distributed feedback region, and an amplification region. An active layer is disposed on the substrate of the first distributed feedback region, the modulation region, the second distributed feedback region, and the amplification region. A first diffraction grating is disposed in the first distributed feedback region to be coupled to the active layer in the first distributed feedback region. A second diffraction grating is disposed in the second distributed feedback region to be coupled to the active layer in the second distributed feedback region. The multiple distributed feedback laser device further includes a first micro heater configured to supply heat to the first diffraction grating and a second micro heater configured to supply heat to the second diffraction grating.Type: ApplicationFiled: December 29, 2010Publication date: April 21, 2011Inventors: Kyung Hyun PARK, Namje Kim, Young Ahn Leem, Sang-Pil Han, Hyunsung Ko, Chul-Wook Lee, Dong-Hun Lee, Jaeheon Shin, Eundeok Sim, Yongsoon Baek
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Publication number: 20110068270Abstract: Provided are an apparatus for generating/detecting terahertz wave and a method of manufacturing the same. The apparatus includes a substrate, a photo conductive layer, a first electrode and a second electrode, and a lens. The photo conductive layer is formed on an entire surface of the substrate. The first electrode and a second electrode are formed on the photo conductive layer. The first and second electrodes are spaced from each other by a certain gap. The lens is formed on the first and second electrodes. The lens is filled in the gap between the first and second electrodes.Type: ApplicationFiled: April 21, 2010Publication date: March 24, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jaeheon SHIN, Kyung Hyun Park, Namje Kim, Sang-Pil Han, Chul-Wook Lee, Eundeok Sim, Yongsoon Baek
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Patent number: 7868550Abstract: An MgO protective layer formed on a front substrate of a plasma display panel and a method of manufacturing the protective layer are disclosed. The protective layer is manufactured by using an MgO pellet, which is simultaneously doped with a first doping material of BeO and/or CaO among alkali earth metals and a second material selected from the group consisting of Sc2O3, Sb2O3, Er2O3, Mo2O3, and Al2O3, as a deposition source through a vacuum deposition method. The protective layer remarkably improves a discharge efficiency of the PDP and shortens a discharge delay time, so that it is applied to a signal can PDP. Also, it lowers a manufacturing cost by reducing the number of electronic components.Type: GrantFiled: February 16, 2007Date of Patent: January 11, 2011Assignee: CE & Chem Inc.Inventors: Jeong Seok Kim, Seok Jung, You Han Kim, Jin Ho Pyo, Yong Seog Kim, Kyung Hyun Park