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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 39. Отображено 33.
27-03-2014 дата публикации

Optical filter having single reflecting total internal reflection echelle grating filter and optical waveguide device including the same

Номер: US20140086531A1
Автор: Gyungock Kim, Jaegyu PARK, Sahnggi Park, Sang Gi Kim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

An optical filter of the inventive concept includes a slab waveguide disposed on a substrate, an input guide gate and an output guide gate spaced apart from each other in the slab waveguide, and an echelle grating filter disposed in the slab waveguide. The echelle grating filter has curvature and extends in a first direction. The echelle grating filter has gratings of sawtooth shape on one surface thereof. Light inputted through the input guide gate is totally reflected at the echelle grating filter by one reflecting process.

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Номер записи: 1
29-01-2015 дата публикации

Optical device and manufacturing method thereof

Номер: US20150030282A1
Автор: Gyungock Kim, Hyundai Park, Jaegyu PARK, JiHo JOO
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Provided is an optical device including a first optical waveguide on one side of a substrate; a laser separated from the first optical waveguide and disposed on the other side of the substrate; and a first coupled waveguide between the laser and the first optical waveguide. The laser may be monolithically integrated on the substrate.

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Номер записи: 2
19-03-2015 дата публикации

OPTICAL COUPLER HAVING SELF-FOCUSING REGION AND ARRYED-WAVEGUIDE GRATING STRUCTURE INCLUDING THE SAME

Номер: US20150078708A1
Автор: JOO Jiho, KIM Gyungock, KWACK Myung Joon, Park Hyundai, PARK Jaegyu
Принадлежит:

Provided are an optical coupler and an arrayed-waveguide grating structure including the same. The coupler includes a lower clad layer, a core comprising a slab waveguide region disposed on one side of the lower clad layer and a ridge waveguide region disposed on the other side of the lower clad layer, and an upper clad disposed on the core, wherein the ridge waveguide region comprises a self-focusing region configured to focus an optical signal provided form the slab waveguide region and thus to prevent scattering of the optical signal. 1. A coupler comprising:a lower clad layer;a core comprising a slab waveguide region disposed on one side of the lower clad layer and a ridge waveguide region disposed on the other side of the lower clad layer; andan upper clad disposed on the core,wherein the ridge waveguide region comprises a self-focusing region configured to focus an optical signal provided form the slab waveguide region to prevent scattering of the optical signal.2. The coupler of claim 1 , wherein the ridge waveguide region further comprises:a tapering region between the slab waveguide region and the self-focusing region; anda straight region between the tapering region and the self-focusing region.3. The coupler of claim 2 , wherein the core comprises:a slab disposed at the slab waveguide region and the ridge waveguide region; anda plurality of lips extend in a first direction on the slab of the ridge waveguide region.4. The coupler of claim 3 , wherein the lips comprise:upper lips disposed on the slab to extend from the tapering region to the self-focusing region; andlower lips disposed between the upper lips and the slab to be disposed in the self-focusing region.5. The coupler of claim 4 , wherein the lower lips are defined by trenches on the slab in the self-focusing region.6. The coupler of claim 4 , wherein a line width of each of the lower lips is wider than that of each of the upper lips.7. The coupler of claim 4 , wherein the lower lips are shorter ...

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Номер записи: 3
19-06-2014 дата публикации

WAVEGUIDE WITH REDUCED PHASE ERROR AND PHOTONICS DEVICE INCLUDING THE SAME

Номер: US20140169729A1
Автор: KIM Gyungock, PARK Jaegyu, PARK Sahnggi
Принадлежит:

Provided are a waveguide with a reduced phase error and a photonics device including the same. The waveguide structure may include a lower clad, a core pattern with at least one bending region, on the lower clad, a beam deflecting pattern on the core pattern, and an upper clad covering the core pattern provided with the beam deflecting pattern. The beam deflecting pattern may be formed of a material, whose refractive index may be higher than that of the upper clad and may be lower than or equivalent to that of the core pattern, and the beam deflecting pattern has an increasing and decreasing width or an oscillating width, when measured along the bending region. 1. A waveguide structure , comprising:a lower clad;a core pattern with at least one bending region, on the lower clad;a beam deflecting pattern on the core pattern; andan upper clad covering the core pattern provided with the beam deflecting pattern,wherein the beam deflecting pattern is formed of a material, whose refractive index is higher than that of the upper clad and is lower than or equivalent to that of the core pattern, andthe beam deflecting pattern has an increasing and decreasing width or an oscillating width, when measured along the bending region.2. The waveguide structure of claim 1 , wherein the core pattern is formed of silicon claim 1 , the upper clad is formed of silicon oxide claim 1 , and the beam deflecting pattern is formed of silicon nitride.3. The waveguide structure of claim 2 , wherein the beam deflecting pattern is formed to have a thickness ranging from 100 nm to 400 nm.4. The waveguide structure of claim 1 , wherein the beam deflecting pattern is formed on the bending region to expose partially a top surface of the core pattern.5. The waveguide structure of claim 1 , wherein the beam deflecting pattern comprises at least one portion that is provided on the bending region and is tapered toward an outer sidewall of the core pattern.6. The waveguide structure of claim 5 , wherein ...

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Номер записи: 4
12-04-2018 дата публикации

OPTICAL COUPLER

Номер: US20180100970A1
Автор: JOO Jiho, KIM Gyungock, KWACK Myungjoon, PARK Jaegyu
Принадлежит:

Provided is an optical coupler including a substrate, a buffer layer on the substrate, a ridge waveguide having a first side surface and a second side surface opposed to the first side surface, and a first waveguide disposed adjacent to the second side surface. The first waveguide includes a first body part and a first connecting part extending from one end of the first body part to be inserted in the ridge waveguide. The first connecting part has a width decreasing in the direction away from the second side surface, and the ridge waveguide includes an extension part extending under an upper surface of the buffer layer. 1. An optical coupler configured to connect an optical device and an optical fiber , the optical coupler comprising:a substrate;a buffer layer on the substrate;a ridge waveguide on the buffer layer, the ridge waveguide having a first side surface connected with the optical fiber and a second side surface opposed to the first side surface, the first side surface having a greater width than the second side surface; anda first waveguide on the buffer layer, the first waveguide disposed adjacent to the second side surface,wherein the first waveguide includes a first body part and a first connecting part extending from one end of the first body part to thereby be inserted in the ridge waveguide,wherein the first connecting part has a width decreasing in a direction away from the second side surface, andwherein the ridge waveguide includes an extension part extending under an upper surface of the buffer layer.2. The optical coupler of claim 1 , wherein the buffer layer comprises:a groove formed such that an upper surface thereof is recessed toward a lower surface thereof; anda protrusion part protruding toward the first side surface of the ridge waveguide, wherein the extension part is disposed in the groove.3. The optical coupler of claim 2 , wherein the depth of the groove is about 15% to about 50% of the thickness of the ridge waveguide.4. The optical ...

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Номер записи: 5
26-04-2018 дата публикации

Wavelength division multiplexer

Номер: US20180113253A1
Автор: Gyungock Kim, Jaegyu PARK, JiHo JOO, Myungjoon Kwack
Принадлежит: Electronics and Telecommunications Research Institute ETRI

A wavelength division multiplexer is disclosed. The wavelength division multiplexer may include an input waveguide, in which a plurality of Bragg gratings for separating multiplexed optical signals into respective optical signals are provided, and a plurality of output waveguides connected to the input waveguide and configured to receive the optical signals separated by the plurality of Bragg gratings. The plurality of Bragg gratings may include a first Bragg grating including first protrusions each having a first width, and a second Bragg grating including second protrusions each having a second width larger than the first width. Each of the first and second protrusions may include a curved side surface, to which a corresponding one of the optical signals is incident.

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Номер записи: 6
26-04-2018 дата публикации

THERMO-OPTIC OPTICAL SWITCH

Номер: US20180113332A1
Автор: JOO Jiho, KIM Gyungock, KWACK Myungjoon, PARK Jaegyu
Принадлежит:

Provided is a thermo-optic optical switch including an input waveguide configured to receive an optical signal, an output waveguide configured to output the optical signal, branch waveguides branching from the input waveguide to be connected to the output waveguide, and heater electrodes disposed on the branch waveguides and configured to heat the branch waveguides, wherein the branch waveguides includes first and second phase shifters having first and second thermo-optic coefficients of opposite signs. 1. A thermo-optic optical switch comprising:an input waveguide configured to receive an optical signal;an output waveguide configured to output the optical signal;branch waveguides branching from the input waveguide to be connected to the output waveguide; andheater electrodes disposed on the branch waveguides and configured to heat the branch waveguides,wherein the branch waveguides comprise first and second phase shifters having first and second thermo-optic coefficients of opposite signs.2. The thermo-optic optical switch of claim 1 , wherein the first phase shifter comprises silicon nitride claim 1 , andthe second phase shifter comprises a polymer.3. The thermo-optic optical switch of claim 2 , wherein the silicon nitride has the first thermo-optic coefficient of 0.4×10Kand the polymer has the second thermo-optic coefficient of −1.0×10to −4.2×10K.4. The thermo-optic optical switch of claim 2 , wherein the polymer comprises a photoresist or epoxy.5. The thermo-optic optical switch of claim 1 , wherein the branch waveguides further comprise:a first optical coupler between the input waveguide and the first and second phase shifters; anda second optical coupler between the output waveguide and the first and second phase shifters.6. The thermo-optic optical switch of claim 5 , wherein each of the first and second optical couplers comprises a Y-branch coupler claim 5 , a multimode interference coupler claim 5 , a directional coupler claim 5 , a 3-dB coupler claim 5 , ...

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Номер записи: 7
26-04-2018 дата публикации

OPTICAL SWITCH

Номер: US20180113371A1
Автор: JOO Jiho, KIM Gyungock, KWACK Myungjoon, PARK Jaegyu
Принадлежит:

Provided is an optical switch including a substrate, a first optical waveguide disposed on the substrate and having a conductive portion disposed on one surface thereof, and a second optical waveguide disposed on the substrate being spaced apart from the first optical waveguide and having an electrode portion disposed on one surface thereof. The electrode portion and the conductive portion face each other. The electrode portion controls an optical field between the first optical waveguide and the second optical waveguide. 1. An optical switch comprising:a substrate;a first optical waveguide disposed on the substrate and having a conductive portion disposed on one surface thereof; anda second optical waveguide disposed on the substrate being spaced apart from the first optical waveguide and having an electrode portion disposed on one surface thereof,wherein the electrode portion and the conductive portion face each other, and the electrode portion controls an optical field between the first optical waveguide and the second optical waveguide.2. The optical switch of claim 1 , wherein claim 1 , in a first operation mode claim 1 , the electrode portion densifies charges in a portion of the conductive portion adjacent to the second optical waveguide to block an optical field between the first optical waveguide and the second optical waveguide claim 1 , and in a second operation mode claim 1 , evenly distributes the charges densified in the portion of the conductive portion in the conductive portion to optically couple the optical field between the first optical waveguide and the second waveguide.3. The optical switch of claim 1 , wherein the conductive portion and the first optical waveguide comprise the same material claim 1 , and the conductive portion is doped with an impurity.4. The optical switch of claim 3 , wherein the first optical waveguide and the conductive portion are integrated.5. The optical switch of claim 1 , wherein the conductive portion comprises doped ...

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Номер записи: 8
09-06-2022 дата публикации

Air screen detector device

Номер: US20220180111A1
Автор: Jaegyu PARK, minhyup SONG, Sang-Pil Han, Sungil Kim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

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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Номер записи: 9
28-05-2015 дата публикации

Semiconductor laser and method of fabricating the same

Номер: US20150146755A1
Автор: Gyungock Kim, In Gyoo Kim, Jaegyu PARK, Ki Seok Jang, Sang Hoon Kim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Provided is a method of fabricating a semiconductor laser. The method includes: providing a semiconductor substrate including a first region and a second region; forming a silicon single crystal layer in the second region of the semiconductor substrate by using a selective epitaxial growth process; forming an optical coupler by using the silicon single crystal layer; and forming a laser core structure including a germanium single crystal layer in the first region of the semiconductor substrate by using a selective epitaxial growth process.

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Номер записи: 10
16-05-2019 дата публикации

OPTICAL COUPLING DEVICE AND METHOD FOR MANUFACTURING THE SAME

Номер: US20190146153A1
Автор: JOO Jiho, KIM Gyungock, PARK Jaegyu
Принадлежит:

Provided are an optical coupling device and a method for manufacturing the same. The optical coupling device includes a first waveguide including a first forward tapered part, a second waveguide disposed on the first waveguide and including a first reverse tapered part in a direction opposite to the first forward tapered part, and an interlayer waveguide disposed between the first and second waveguides and having a thickness corresponding to a distance between the first forward tapered part and the first reverse tapered part. 1. An optical coupling device comprising:a first waveguide including a first forward tapered part;a second waveguide disposed on the first waveguide, the second waveguide including a first reverse tapered part in a direction opposite to the first forward tapered part; andan interlayer waveguide disposed between the first and second waveguides, the interlayer waveguide having a thickness corresponding to a distance between the first forward tapered part and the first reverse tapered part.2. The optical coupling device of claim 1 , wherein the interlayer waveguide comprises:a second forward tapered part disposed below the second waveguide and disposed in the same direction as the first forward tapered part; anda second reverse tapered part disposed on the first waveguide and disposed in the same direction as the first reverse tapered part.3. The optical coupling device of claim 2 , wherein the interlayer waveguide further comprises an interlayer connection part connected between the second forward tapered part and the second reverse tapered part.4. The optical coupling device of claim 3 , wherein the interlayer connection part is disposed between the first forward tapered part and the first reverse tapered part.5. The optical coupling device of claim 3 , wherein the interlayer connection part has a width greater than that of each of the first and second waveguides.6. The optical coupling device of claim 1 , wherein the interlayer waveguide has a ...

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Номер записи: 11
15-06-2017 дата публикации

WAVELENGTH DIVISION DEVICE, WAVELENGTH DIVISION MULTIPLEXING SYSTEM AND WAVELENGTH MULTIPLEXING SYSTEM

Номер: US20170168238A1
Автор: JOO Jiho, KIM Gyungock, KWACK Myungjoon, PARK Jaegyu
Принадлежит:

Provided is a wavelength division device. The wavelength division device includes input arrayed waveguides, an input circular grating coupler connected to one ends of the input arrayed waveguides and configured to refract first light having a plurality of wavelengths and output the refracted first light to each of the one ends of the input arrayed waveguides as plurality of second light, and an output star coupler connected to the other ends of the input arrayed waveguides and configured to receive the plurality of second light from the other ends of the input arrayed waveguides and output optical signals that are divided for each wavelength. The input circular grating coupler includes a plurality of circular gratings. 1. A wavelength division device comprising:input arrayed waveguides;an input circular grating coupler connected to one ends of the input arrayed waveguides and configured to refract first light having a plurality of wavelengths and output the refracted first light to each of the one ends of the input arrayed waveguides as plurality of second light; andan output star coupler connected to other ends of the input arrayed waveguides and configured to receive the plurality of second light from the other ends of the input arrayed waveguides and output optical signals that are divided for each wavelength,wherein the input circular grating coupler comprises a plurality of circular gratings.2. The wavelength division device of claim 1 , wherein the input circular grating coupler refracts the first light to a plane perpendicular to an incident path to output the plurality of second light.3. The wavelength division device of claim 1 , wherein each of the plurality of second light has an intensity in which an intensity of the first light is equally distributed.4. The wavelength division device of claim 1 , wherein the plurality of circular gratings have the same center and radii that gradually increase at a predetermined distance.5. The wavelength division device ...

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Номер записи: 12
21-07-2016 дата публикации

PHOTODETECTOR

Номер: US20160211402A1
Автор: Jang Ki Seok, JOO Jiho, KIM Gyungock, KIM In Gyoo, KIM Sang Hoon, KIM Sun Ae, KWACK Myungjoon, OH Jin Hyuk, PARK Jaegyu
Принадлежит:

Provided is a photodetector including a substrate, a first doped region on the substrate, a second doped region having a ring structure, wherein the second doped region is provided in the substrate, surrounds the first doped region and is horizontally spaced apart from a side of the first doped region, an optical absorption layer on the first doped region, a contact layer on the optical absorption layer, a first electrode on the contact layer, and a second electrode on the second doped region. 1. A photodetector comprising:a substrate;a first doped region in an upper portion of the substrate;a second doped region having a ring structure, wherein the second doped region is provided in the substrate, surrounds the first doped region and is horizontally spaced apart from a side of the first doped region;an optical absorption layer on the first doped region;a contact layer on the optical absorption layer;a first electrode on the contact layer; anda second electrode on the second doped region.2. The photodetector of claim 1 , further comprising a third doped region having a ring structure claim 1 , wherein the third doped region is provided in the substrate claim 1 , surrounds the first doped region and is disposed between the first doped region and the second doped region claim 1 , andwherein the substrate is an intrinsic silicon substrate, the first doped region and the third doped region have a first conductive type and the second doped region has a second conductive type.3. The photodetector of claim 2 , wherein the first conductive type is a p type and the second conductive type is a n type.4. The photodetector of claim 1 , further comprising:a fourth doped region under the first doped region provided in the substrate; anda third doped region having a ring structure, wherein the third doped region is provided in the substrate and surrounds the first doped region and the second doped region, andwherein the first doped region and the third doped region have a first ...

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Номер записи: 13
04-08-2016 дата публикации

Wavelength combiner unit and arrayed waveguide grating having the same

Номер: US20160223745A1
Автор: Gyungock Kim, Jaegyu PARK, JiHo JOO, Myungjoon Kwack
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Provided is a wavelength combiner including a slab waveguide; an output waveguide extended from the slab waveguide in a first direction; and at least one rib waveguide disposed at an interval horizontally from the output waveguide and extended from the slab waveguide in the first direction, wherein the rib waveguide is tapered in the first direction.

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Номер записи: 14
08-09-2016 дата публикации

OPTICAL COUPLING DEVICE

Номер: US20160259126A1
Автор: Jang Ki Seok, JOO Jiho, KIM Gyungock, KWACK Myungjoon, PARK Jaegyu
Принадлежит:

An optical coupling device comprises an optical fiber block including a first block part and a second block part contacting with one side of the first block part, an optical fiber penetrating the optical fiber block and having an end surface exposed at a bottom surface of the optical fiber block, a semiconductor chip disposed below the optical fiber block and having an optical input/output element disposed on a top surface of the semiconductor chip to correspond with the end surface of the optical fiber, and a planarization layer disposed on the top surface of the semiconductor chip and having a recess region. A bottom surface of the first block part has a higher level than that of the second block part. The bottom surface of the second block part contacts with a bottom of the recess region. The optical fiber is optically coupled with the optical input/output element. 1. An optical coupling device comprising:an optical fiber block including a first block part and a second block part contacting one side of the first block part;an optical fiber penetrating the optical fiber block and having an end surface exposed at a bottom surface of the optical fiber block;a semiconductor chip disposed below the optical fiber block, the semiconductor chip having a top surface on which an optical input/output element is disposed such that the optical input/output element corresponds to the end surface of the optical fiber; anda planarization layer disposed on the top surface of the semiconductor chip and having a recess region,wherein a bottom surface of the first block part has a higher level than a bottom surface of the second block part from a bottom surface of the semiconductor chip, the bottom surface of the second block part contacts a bottom of the recess region, and the optical fiber is optically coupled with the optical input/output element, andwherein the second block part comprises an upper portion disposed at a higher level than the bottom surface of the first block part ...

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Номер записи: 15
30-07-2020 дата публикации

Three-dimensional optical switch

Номер: US20200241209A1
Автор: Gyung Ock Kim, Jaegyu PARK, JiHo JOO
Принадлежит: Electronics and Telecommunications Research Institute ETRI

A 3D optical switch for transferring an optical signal between a plurality of layers of an optical integrated circuit, which comprises: a first optical coupler for distributing the optical signal input to a first optical waveguide deployed in a first layer among the plurality of layers to a second optical waveguide deployed in a second layer different from the first layer; a phase shifter for changing a phase of a first optical signal in the first optical waveguide passing through the first optical coupler and a phase of a second optical signal in the second optical waveguide distributed by the first optical coupler; and a second optical coupler for combining the first optical signal of which the phase is changed and the second optical signal of which the phase is changed is provided.

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Номер записи: 16
27-11-2014 дата публикации

OPTICAL INPUT/OUTPUT DEVICE, OPTICAL ELECTRONIC SYSTEM INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE SAME

Номер: US20140346532A1
Автор: CHOI YongSeok, Jang Ki Seok, JOO Jiho, KIM Gyungock, KIM In Gyoo, Kim Sang Gi, KIM Sang Hoon, KIM Sun Ae, KWACK Myung Joon, KWON Hyuk Je, OH Jin Hyuk, Park Hyundai, PARK Jaegyu
Принадлежит: Electronics and Telecommunications Research Institute

Disclosed are an optical input/output device and an opto-electronic system including the same. The device includes a bulk silicon substrate, at least one vertical-input light detection element monolithically integrated on a portion of the bulk silicon substrate, and at least one vertical-output light source element monolithically integrated on another portion of the bulk silicon substrate adjacent to the vertical-input light detection element. The vertical-output light source element includes a III-V compound semiconductor light source active layer combined with the bulk silicon substrate by a wafer bonding method. 1. An optical input/output device comprising:a bulk silicon substrate;at least one vertical-input light detection element monolithically integrated on a portion of the bulk silicon substrate; andat least one vertical-output light source element monolithically integrated on another portion of the bulk silicon substrate,wherein the vertical-output light source element includes a III-V compound semiconductor light source active layer monolithically integrated on the bulk silicon substrate by a wafer bonding.2. The optical input/output device of claim 1 , wherein the vertical-input light detection element includes germanium.3. The optical input/output device of claim 1 , wherein the vertical-input light detection element comprises: a photodiode including GeSi/GeSisuperlattice (0≦x claim 1 ,y≦1) claim 1 , germanium-based quantum dots claim 1 , a germanium-based quantum wire array claim 1 , or silicon.4. The optical input/output device of claim 1 , wherein the vertical-output light source element includes a surface emitting laser or a surface emitting light emitting diode (LED).5. The optical input/output device of claim 1 , further comprising:a passivation layer on the vertical-output light source element and the vertical-input light detection element.6. The optical input/output device of claim 5 , wherein the passivation layer includes silicon oxide.7. The ...

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Номер записи: 17
14-09-2017 дата публикации

OPTO-ELECTRONIC SYSTEM INCLUDING OPTICAL INPUT/OUTPUT DEVICE

Номер: US20170261705A1
Автор: CHOI YongSeok, Jang Ki Seok, JOO Jiho, KIM Gyungock, KIM In Gyoo, Kim Sang Gi, KIM Sang Hoon, KIM Sun Ae, KWACK Myung Joon, KWON Hyuk Je, OH Jin Hyuk, Park Hyundai, PARK Jaegyu
Принадлежит: Electronics and Telecommunications Research Instit ute

Disclosed are an optical input/output device and an opto-electronic system including the same. The device includes a bulk silicon substrate, at least one vertical-input light detection element monolithically integrated on a portion of the bulk silicon substrate, and at least one vertical-output light source element monolithically integrated on another portion of the bulk silicon substrate adjacent to the vertical-input light detection element. The vertical-output light source element includes a III-V compound semiconductor light source active layer combined with the bulk silicon substrate by a wafer bonding method.

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Номер записи: 18
01-10-2015 дата публикации

Optical coupler and optical device including the same

Номер: US20150277054A1
Автор: Gyungock Kim, Hyundai Park, Jaegyu PARK, JiHo JOO, Taeyong KIM
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Provided are an optical coupler and an optical device including the same. The optical coupler includes: a substrate; a buffer layer on the substrate; and an optical coupling layer including a horizontal mode expander layer and a vertical mode expander layer, wherein the horizontal mode expander layer expands in one direction on the buffer layer, and wherein the vertical mode expander layer adjusts a stepped difference between the horizontal mode expander layer and a plurality of optical transmission devices having different diameters or sectional areas and connected to both sides of the horizontal mode expander layer, and the vertical mode expander layer is disposed on a side of the horizontal mode expander layer to minimize optical loss between the plurality of optical transmission devices.

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Номер записи: 19
21-09-2017 дата публикации

METHOD OF MANUFACTURING OPTICAL INPUT/OUTPUT DEVICE

Номер: US20170269298A1
Автор: CHOI YongSeok, Jang Ki Seok, JOO Jiho, KIM Gyungock, KIM In Gyoo, Kim Sang Gi, KIM Sang Hoon, KIM Sun Ae, KWACK Myung Joon, KWON Hyuk Je, OH Jin Hyuk, Park Hyundai, PARK Jaegyu
Принадлежит: Electronics and Telecommunications Research Institute

Disclosed are an optical input/output device and an opto-electronic system including the same. The device includes a bulk silicon substrate, at least one vertical-input light detection element monolithically integrated on a portion of the bulk silicon substrate, and at least one vertical-output light source element monolithically integrated on another portion of the bulk silicon substrate adjacent to the vertical-input light detection element. The vertical-output light source element includes a III-V compound semiconductor light source active layer combined with the bulk silicon substrate by a wafer bonding method.

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Номер записи: 20
26-10-2017 дата публикации

Semiconductor device and method for manufacturing the same

Номер: US20170309589A1
Автор: Gyungock Kim, Jaegyu PARK, JiHo JOO, Jin Hyuk OH, Myungjoon Kwack
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Provided are a semiconductor device and a method for manufacturing the same. The semiconductor device according to an embodiment of the inventive concept includes a first semiconductor chip having a recess portion in one surface thereof; a first adhesion pattern filled within the recess portion of the first semiconductor chip; and a second semiconductor chip disposed on the first adhesion pattern. The second semiconductor chip may represent improved heat dissipation characteristics.

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Номер записи: 21
27-06-2017 дата публикации

Optical input/output device, optical electronic system including the same, and method of manufacturing the same

Номер: US9690042B2
Автор: Gyungock Kim, Hyuk Je Kwon, Hyundai Park, In Gyoo Kim, Jaegyu PARK, JiHo JOO, Jin Hyuk OH, Ki Seok Jang, Myung Joon KWACK, Sang Gi Kim, Sang Hoon Kim, Sun Ae Kim, Yongseok Choi
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Disclosed are an optical input/output device and an opto-electronic system including the same. The device includes a bulk silicon substrate, at least one vertical-input light detection element monolithically integrated on a portion of the bulk silicon substrate, and at least one vertical-output light source element monolithically integrated on another portion of the bulk silicon substrate adjacent to the vertical-input light detection element. The vertical-output light source element includes a III-V compound semiconductor light source active layer combined with the bulk silicon substrate by a wafer bonding method.

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Номер записи: 22
24-07-2018 дата публикации

Optical coupler

Номер: US10031293B2
Автор: Gyungock Kim, Jaegyu PARK, JiHo JOO, Myungjoon Kwack
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Provided is an optical coupler including a substrate, a buffer layer on the substrate, a ridge waveguide having a first side surface and a second side surface opposed to the first side surface, and a first waveguide disposed adjacent to the second side surface. The first waveguide includes a first body part and a first connecting part extending from one end of the first body part to be inserted in the ridge waveguide. The first connecting part has a width decreasing in the direction away from the second side surface, and the ridge waveguide includes an extension part extending under an upper surface of the buffer layer.

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Номер записи: 23
17-01-2023 дата публикации

Electro-optic modulator

Номер: US11556041B2
Автор: Jaegyu PARK, minhyup SONG, Sang-Pil Han, Sungil Kim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

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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Номер записи: 24
21-10-2021 дата публикации

Apparatus for generating optical signal of multi-channel

Номер: US20210328681A1
Автор: Jaegyu PARK, minhyup SONG, Sang-Pil Han, Sungil Kim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

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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Номер записи: 25
09-05-2024 дата публикации

Sub-mount, optical modulation module, and optical communication device

Номер: US20240151918A1
Автор: Jaegyu PARK, Sang-Pil Han, Sungil Kim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

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.

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Номер записи: 26
19-04-2016 дата публикации

Optical coupler and optical device including the same

Номер: US9316792B2
Автор: Gyungock Kim, Hyundai Park, Jaegyu PARK, JiHo JOO, Taeyong KIM
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Provided are an optical coupler and an optical device including the same. The optical coupler includes: a substrate; a buffer layer on the substrate; and an optical coupling layer including a horizontal mode expander layer and a vertical mode expander layer, wherein the horizontal mode expander layer expands in one direction on the buffer layer, and wherein the vertical mode expander layer adjusts a stepped difference between the horizontal mode expander layer and a plurality of optical transmission devices having different diameters or sectional areas and connected to both sides of the horizontal mode expander layer, and the vertical mode expander layer is disposed on a side of the horizontal mode expander layer to minimize optical loss between the plurality of optical transmission devices.

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Номер записи: 27
02-12-2014 дата публикации

Waveguide with reduced phase error and photonics device including the same

Номер: US8903208B2
Автор: Gyungock Kim, Jaegyu PARK, Sahnggi Park
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Provided are a waveguide with a reduced phase error and a photonics device including the same. The waveguide structure may include a lower clad, a core pattern with at least one bending region, on the lower clad, a beam deflecting pattern on the core pattern, and an upper clad covering the core pattern provided with the beam deflecting pattern. The beam deflecting pattern may be formed of a material, whose refractive index may be higher than that of the upper clad and may be lower than or equivalent to that of the core pattern, and the beam deflecting pattern has an increasing and decreasing width or an oscillating width, when measured along the bending region.

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Номер записи: 28
16-04-2024 дата публикации

Air screen detector device

Номер: US11961270B2
Автор: Jaegyu PARK, minhyup SONG, Sang-Pil Han, Sungil Kim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

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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Номер записи: 29
08-08-2017 дата публикации

Photodetector

Номер: US09728657B2
Автор: Gyungock Kim, In Gyoo Kim, Jaegyu PARK, JiHo JOO, Jin Hyuk OH, Ki Seok Jang, Myungjoon Kwack, Sang Hoon Kim, Sun Ae Kim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Provided is a photodetector including a substrate, a first doped region on the substrate, a second doped region having a ring structure, wherein the second doped region is provided in the substrate, surrounds the first doped region and is horizontally spaced apart from a side of the first doped region, an optical absorption layer on the first doped region, a contact layer on the optical absorption layer, a first electrode on the contact layer, and a second electrode on the second doped region.

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Номер записи: 30
29-11-2016 дата публикации

Wavelength combiner unit and arrayed waveguide grating having the same

Номер: US09507087B2
Автор: Gyungock Kim, Jaegyu PARK, JiHo JOO, Myungjoon Kwack
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Provided is a wavelength combiner including a slab waveguide; an output waveguide extended from the slab waveguide in a first direction; and at least one rib waveguide disposed at an interval horizontally from the output waveguide and extended from the slab waveguide in the first direction, wherein the rib waveguide is tapered in the first direction.

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Номер записи: 31
04-10-2016 дата публикации

Optical coupling device

Номер: US09459409B2
Автор: Gyungock Kim, Jaegyu PARK, JiHo JOO, Ki Seok Jang, Myungjoon Kwack
Принадлежит: Electronics and Telecommunications Research Institute ETRI

An optical coupling device comprises an optical fiber block including a first block part and a second block part contacting with one side of the first block part, an optical fiber penetrating the optical fiber block and having an end surface exposed at a bottom surface of the optical fiber block, a semiconductor chip disposed below the optical fiber block and having an optical input/output element disposed on a top surface of the semiconductor chip to correspond with the end surface of the optical fiber, and a planarization layer disposed on the top surface of the semiconductor chip and having a recess region. A bottom surface of the first block part has a higher level than that of the second block part. The bottom surface of the second block part contacts with a bottom of the recess region. The optical fiber is optically coupled with the optical input/output element.

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Номер записи: 32
07-06-2016 дата публикации

Flat-top mode generating device and arrayed waveguide grating having the same

Номер: US09360621B1
Автор: Gyungock Kim, Jaegyu PARK, JiHo JOO, Myungjoon Kwack
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Provided is a flat-top mode generating device. The flat-top mode generating device includes an input waveguide, a double-tapered structure connected to the input waveguide, and an input star coupler connected to the double-tapered structure. The double-tapered structure includes a first part having a first height hat is equal to that of each of the input waveguide and the input star coupler, and a second part disposed in the first part on the plane and having a second height that is less than the first height, the second part being tapered from the input star coupler toward the input waveguide.

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Номер записи: 33