公开(公告)号：US11424831B2

公开(公告)日：2022-08-23

申请号：US17539042

申请日：2021-11-30

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Oh Kee Kwon

IPC: H04B10/50 ,  H04L7/00 ,  H04B10/079

Abstract: Disclosed is a frequency swept source apparatus including a mode locking laser that outputs an input optical signal having first to n-th frequency components, a transmission delay controller that generates first to m-th sub-optical signals, each of which includes at least one component of the first to n-th frequency components, and outputs a delay optical signal obtained by sequentially delaying the first to m-th sub-optical signals. The transmission delay controller includes a demultiplexer that outputs the first to m-th sub-optical signals to first to m-th channels based on the input optical signal, respectively, a path delay unit that adjusts lengths of optical paths of the first to m-th channels so as to be different from one another, a refractive index controller that adjusts a refractive index of each of the first to m-th channels, and a multiplexer that combines the first to m-th sub-optical signals.

公开(公告)号：US12068576B2

公开(公告)日：2024-08-20

申请号：US17313610

申请日：2021-05-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Oh Kee Kwon ,  Su Hwan Oh ,  Chul-Wook Lee ,  Kisoo Kim

IPC: H01S5/026 ,  G02B6/02 ,  H01S5/024 ,  H01S5/0625 ,  H01S5/125

CPC classification number: H01S5/0261 ,  G02B6/0208 ,  H01S5/02461 ,  H01S5/06256 ,  H01S5/125

Abstract: Provided are an optical waveguide device and a laser apparatus including the same. The optical waveguide device includes a peripheral part disposed on an edge region of a substrate, an air pocket disposed on a central region of the substrate within the peripheral part, an optical waveguide comprising a core layer, which is disposed on an upper portion of the substrate within the air pocket to extend in a first direction, and an electrode on the core layer, and a plurality of hinges disposed on the air pocket to connect the optical waveguide to the peripheral part in a second direction crossing the first direction.

公开(公告)号：US11589140B2

公开(公告)日：2023-02-21

申请号：US17338911

申请日：2021-06-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Oh Kee Kwon

IPC: H04J14/00 ,  H04Q11/00 ,  H01Q3/30 ,  H04B10/556

Abstract: An optical beamforming device includes an RF front-end transmitting or receiving RF signals and an optical beamformer forming or compensating for a time delay for each of the plurality of channels based on the RF signals. The optical beamformer includes E/O converters converting the RF signals into optical signals, respectively, a linear modulator generating an optical modulation signal based on an RF input signal, a TTD array outputting an optical combined signal obtained by compensating for a time delay degree of the input optical signals or outputting output optical signals, in each of which a time delay is formed for each channel, by distributing the optical modulation signal, a photo detector generating an RF output signal to an RF back-end based on the optical combined signal, and O/E converters converting the output optical signals into RF signals, respectively.

公开(公告)号：US09927484B2

公开(公告)日：2018-03-27

申请号：US15193667

申请日：2016-06-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Oh Kee Kwon ,  Young Tak Han ,  Ki Soo Kim ,  Su Hwan Oh ,  Chul Wook Lee ,  Young Ahn Leem

IPC: G01R31/302 ,  G01R31/265 ,  H01L21/66 ,  H01L23/66 ,  H01L23/00 ,  H01L23/535 ,  G01R1/07

CPC classification number: G01R31/2656 ,  G01R1/06772 ,  G01R1/07 ,  G01R31/2635 ,  H01L22/32 ,  H01L23/535 ,  H01L23/66 ,  H01L24/05 ,  H01L24/45 ,  H01L2223/6611 ,  H01L2223/6627 ,  H01L2223/6655 ,  H01L2224/04042 ,  H01L2924/00014 ,  H01P3/00 ,  H01P5/085 ,  H01S5/0014 ,  H01S5/0427 ,  H01L2224/45099

Abstract: Provided herein is a radio frequency probe apparatus including a RF waveguide including a ground electrode and a signal electrode, a register connected to the signal electrode, a RF connector including an outer conductor connected to the ground electrode, an inner conductor connected to the signal electrode, and a dielectric body filling a portion between the outer conductor and the inner conductor, and a single tip probe connected to the signal electrode of the RF waveguide, or the register.

公开(公告)号：US09348195B2

公开(公告)日：2016-05-24

申请号：US14951311

申请日：2015-11-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Oh Kee Kwon ,  Kwang Ryong Oh ,  minhyup Song ,  Chul-Wook Lee ,  Jang Uk Shin ,  Young-Tak Han

IPC: G02F1/35 ,  G02F1/365 ,  G02F1/383

CPC classification number: G02F1/3532 ,  G02F1/365 ,  G02F1/383 ,  G02F2001/354 ,  G02F2203/56

Abstract: A method of operating a wavelength swept source apparatus includes generating a single mode light, and generating a basic optical comb including light rays having identical frequency differences with adjacent light rays by modulating the generated single mode light. The method further includes generating other optical combs that include the same number of light rays as that of light rays of the optical comb that has a frequency band different from that of the basic optical comb, and is distributed in a frequency band wider than that in which the basic optical comb is distributed, by modulating the light rays of the basic optical comb. The light rays of the basic optical comb and the light rays included in the other optical combs are sequentially emitted according to frequencies of the light rays of the basic optical comb and the light rays included in the other optical combs.

Abstract translation: 操作波长扫描源装置的方法包括：生成单模光，并通过调制所生成的单模光，产生包括具有与相邻光线相同频率差的光的基本光梳。 该方法还包括生成包括与具有与基本光梳的频带不同的频带的光梳的光线相同数量的光束的其他光梳，并且分布在比 通过调制基本光梳的光线，分配基本光梳。 基本光梳的光线和包含在其他光梳中的光线根据基本光梳的光线和包含在其他光梳中的光线的频率依次发射。

公开(公告)号：US09343614B2

公开(公告)日：2016-05-17

申请号：US14616149

申请日：2015-02-06

Applicant: Electronics and Telecommunications Research Institute

Inventor： Su Hwan Oh ,  Ki-Hong Yoon ,  Kisoo Kim ,  O-Kyun Kwon ,  Oh Kee Kwon ,  Byung-Seok Choi ,  Jongbae Kim

IPC: H01L33/00 ,  H01S5/026 ,  H01S5/14 ,  H01L33/20 ,  B82Y20/00 ,  H01S5/022 ,  H01S5/062 ,  H01S5/10 ,  H01S5/223 ,  H01S5/343 ,  H01S5/22 ,  G02B6/30 ,  G02B6/42

CPC classification number: H01L33/005 ,  B82Y20/00 ,  G02B6/305 ,  G02B6/4206 ,  H01L33/0045 ,  H01L33/20 ,  H01L2933/0016 ,  H01L2933/0058 ,  H01S5/02216 ,  H01S5/02284 ,  H01S5/026 ,  H01S5/06226 ,  H01S5/101 ,  H01S5/1014 ,  H01S5/141 ,  H01S5/2213 ,  H01S5/2224 ,  H01S5/2231 ,  H01S5/34306 ,  H01S2301/176

Abstract: Provided are a high-speed superluminescent diode, a method of manufacturing the same, and a wavelength-tunable external cavity laser including the same. The superluminescent diode includes a substrate having an active region and an optical mode size conversion region, waveguides including an ridge waveguide in the active region and a deep ridge waveguide in the optical mode size conversion region connected to the active waveguide, an electrode disposed on the ridge waveguide; planarizing layers disposed on sides of the ridge waveguide and the deep ridge waveguide on the substrate, and a pad electrically connected to the electrode, the pad being disposed on the planarizing layers outside the active waveguide.