Patents by Inventor Yong Soon Baek
Yong Soon Baek 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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Patent number: 10268004Abstract: Provided herein are a multi-channel receiver optical sub-assembly and a manufacturing method thereof. The multi-channel receiver optical sub-assembly includes a PLC chip having a first side into which an optical signal is received and a second side from which the received signal is outputted, with an inclined surface formed on the second side of the PLC chip at a preset angle, a PD carrier bonded onto the PLC chip and made of a glass material, and an SI-PD bonded onto the PD carrier, a lens being integrated therein. The PLC chip, the PD carrier, and the SI-PD are passively aligned by at least one alignment mark and then are bonded.Type: GrantFiled: January 12, 2018Date of Patent: April 23, 2019Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young Tak Han, Sang Ho Park, Yong Soon Baek, Jang Uk Shin, Yong Hwan Kwon, Jong Hoi Kim
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Publication number: 20180136419Abstract: Provided herein are a multi-channel receiver optical sub-assembly and a manufacturing method thereof. The multi-channel receiver optical sub-assembly includes a PLC chip having a first side into which an optical signal is received and a second side from which the received signal is outputted, with an inclined surface formed on the second side of the PLC chip at a preset angle, a PD carrier bonded onto the PLC chip and made of a glass material, and an SI-PD bonded onto the PD carrier, a lens being integrated therein. The PLC chip, the PD carrier, and the SI-PD are passively aligned by at least one alignment mark and then are bonded.Type: ApplicationFiled: January 12, 2018Publication date: May 17, 2018Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young Tak HAN, Sang Ho PARK, Yong Soon BAEK, Jang Uk SHIN, Yong Hwan KWON, Jong Hoi KIM
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Patent number: 9904023Abstract: Provided herein are a multi-channel receiver optical sub-assembly and a manufacturing method thereof. The multi-channel receiver optical sub-assembly includes a PLC chip having a first side into which an optical signal is received and a second side from which the received signal is outputted, with an inclined surface formed on the second side of the PLC chip at a preset angle, a PD carrier bonded onto the PLC chip and made of a glass material, and an SI-PD bonded onto the PD carrier, a lens being integrated therein. The PLC chip, the PD carrier, and the SI-PD are passively aligned by at least one alignment mark and then are bonded.Type: GrantFiled: July 6, 2016Date of Patent: February 27, 2018Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young Tak Han, Sang Ho Park, Yong Soon Baek, Jang Uk Shin, Yong Hwan Kwon, Jong Hoi Kim
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Patent number: 9711939Abstract: Provided herein is a semiconductor optical device, including a waveguide including lattices buried therein and having a buried hetero (BH) structure formed in an optical oscillation region in which single mode light is oscillated, a waveguide having a deep ridge structure formed in an optical modulation region, and a passive waveguide formed in a mode transition region interposed between the optical oscillation region and the optical modulation region, formed as a connecting structure of the waveguide having the BH structure extending from the optical oscillation region and the waveguide having the deep ridge structure extending from the optical modulation region, and inducing evanescent optical coupling, wherein a width of the waveguide having the BH structure in the mode transition region is smaller than a width of the waveguide having the deep ridge structure in the optical modulation region.Type: GrantFiled: August 19, 2016Date of Patent: July 18, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Dong Hun Lee, Sang Ho Park, Yong Soon Baek, Jang Uk Shin, Young Tak Han
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Publication number: 20170179679Abstract: Provided herein is a semiconductor optical device, including a waveguide including lattices buried therein and having a buried hetero (BH) structure formed in an optical oscillation region in which single mode light is oscillated, a waveguide having a deep ridge structure formed in an optical modulation region, and a passive waveguide formed in a mode transition region interposed between the optical oscillation region and the optical modulation region, formed as a connecting structure of the waveguide having the BH structure extending from the optical oscillation region and the waveguide having the deep ridge structure extending from the optical modulation region, and inducing evanescent optical coupling, wherein a width of the waveguide having the BH structure in the mode transition region is smaller than a width of the waveguide having the deep ridge structure in the optical modulation region.Type: ApplicationFiled: August 19, 2016Publication date: June 22, 2017Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Dong Hun LEE, Sang Ho PARK, Yong Soon BAEK, Jang Uk SHIN, Young Tak HAN
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Publication number: 20170139162Abstract: Provided herein are a multi-channel receiver optical sub-assembly and a manufacturing method thereof. The multi-channel receiver optical sub-assembly includes a PLC chip having a first side into which an optical signal is received and a second side from which the received signal is outputted, with an inclined surface formed on the second side of the PLC chip at a preset angle, a PD carrier bonded onto the PLC chip and made of a glass material, and an SI-PD bonded onto the PD carrier, a lens being integrated therein. The PLC chip, the PD carrier, and the SI-PD are passively aligned by at least one alignment mark and then are bonded.Type: ApplicationFiled: July 6, 2016Publication date: May 18, 2017Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young Tak HAN, Sang Ho PARK, Yong Soon BAEK, Jang Uk SHIN, Yong Hwan KWON, Jong Hoi KIM
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Patent number: 9411097Abstract: Provided herein is an optical module including an optical bench having a first step with a first depth and a second step with a second depth that is smaller than the first depth; a silicon carrier disposed above the first step, and where at least one semiconductor chip is installed; an AWG chip (Arrayed Waveguide Grating chip) secured to the second step, extends up to the first step, and is chip-to-chip bonded with the silicon carrier above the first step; a lens disposed on an upper surface of the optical bench where the first step and the second step are not formed; and a metal package surrounding the optical bench, silicon carrier, AWG chip and lens, wherein at one side of the metal package, a double slit that includes an upper slit and a lower slit are formed, a DC FPCB (Direct Current FPCB) extends from outside towards inside the metal package through the upper slit and is secured to a support formed on an inner surface of the upper slit, and an RF FPCB (Radio Frequency FPCB) extends from outside towardsType: GrantFiled: June 1, 2015Date of Patent: August 9, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young Tak Han, Sang Ho Park, Yong Soon Baek, Jang Uk Shin
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Publication number: 20160154177Abstract: Provided herein is an optical module including an optical bench having a first step with a first depth and a second step with a second depth that is smaller than the first depth; a silicon carrier disposed above the first step, and where at least one semiconductor chip is installed; an AWG chip (Arrayed Waveguide Grating chip) secured to the second step, extends up to the first step, and is chip-to-chip bonded with the silicon carrier above the first step; a lens disposed on an upper surface of the optical bench where the first step and the second step are not formed; and a metal package surrounding the optical bench, silicon carrier, AWG chip and lens, wherein at one side of the metal package, a double slit that includes an upper slit and a lower slit are formed, a DC FPCB (Direct Current FPCB) extends from outside towards inside the metal package through the upper slit and is secured to a support formed on an inner surface of the upper slit, and an RF FPCB (Radio Frequency FPCB) extends from outside towardsType: ApplicationFiled: June 1, 2015Publication date: June 2, 2016Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young Tak HAN, Sang Ho PARK, Yong Soon BAEK, Jang Uk SHIN
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Patent number: 8086105Abstract: Provided is a wavelength division multiplexer/demultiplexer having a flat wavelength response. In the wavelength division multiplexer/demultiplexer, a modified taper-shaped optical waveguide is interposed between an input waveguide and a first slab waveguide, such that the distribution of an optical signal input to an Arrayed Waveguide Grating (AWG) has a sinc-function shape. Thus, a flat wavelength response can be obtained in an output waveguide. In addition, the modified taper-shaped optical waveguide interposed to obtain a flat wavelength response has a small size and a simple structure, and thus can be applied to a conventional wavelength division multiplexer/demultiplexer without a design change.Type: GrantFiled: September 30, 2008Date of Patent: December 27, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Jang Uk Shin, Sang Ho Park, Young Tak Han, Sang Pil Han, Yong Soon Baek
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Patent number: 7974539Abstract: Provided is a bi-directional optical module including: a transmission optical element including an SOA (semiconductor optical amplifier) aligned on an optical axis of an LD (laser diode) formed on a substrate; and a reception optical element comprising a PD (photodiode) including a light receiving surface perpendicular to the optical axis of the LD of the transmission optical element.Type: GrantFiled: July 21, 2006Date of Patent: July 5, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Jung Ho Song, Yong Soon Baek, Sung Il Kim, Ki Soo Kim
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Publication number: 20100158056Abstract: Provided is a semiconductor laser device including: a gain area where multi-wavelength lights are generated and gain are provided; a first reflection area where among the multi-wavelength lights, a first-wavelength light is reflected to the gain area in response to a first selection signal; a second reflection area where among the multi-wavelength lights, a second-wavelength light is reflected to the gain area; and a phase control area where a phase of the second-wavelength light is shifted in response to a phase control signal, the phase control area being disposed between the first reflection layer and the second reflection layer.Type: ApplicationFiled: June 30, 2009Publication date: June 24, 2010Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jae-Heon Shin, Kyung-Hyun Park, Nam-Je Kim, Chul-Wook Lee, Eun-Deok Sim, Sang-Pil Han, Yong-Soon Baek
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Patent number: 7599624Abstract: A channel switching function is added to a wavelength division multiplexing passive optical network (WDM-PON) system, which is an access optical network system, and the potential transmission rate is increased by combining wide wavelength tunable lasers and a time division multiplexing (TDM) data structure and properly using the necessary optical components. In addition, when the wavelength of a light source or an arrayed waveguide grating (AWG) changes, the wavelength is traced and the magnitude of a transmitted signal is maximized without an additional detour line using a loop-back network structure. Furthermore, fewer thermo-electric controllers (TECs) are required for stabilizing the temperature of an optical line terminal (OLT) using wavelength tunable lasers, each laser electrically changing its wavelength.Type: GrantFiled: October 17, 2005Date of Patent: October 6, 2009Assignee: Electronics and Telecommunications Research InstituteInventors: Sahng Gi Park, Su Hwan Oh, Kwang Seong Choi, Moon Ho Park, Yong Soon Baek, Kwang Ryong Oh
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Patent number: 7599403Abstract: A 1.55 ?m SLD having a laser diode (LD) region and a semiconductor optical amplifier (SOA) region, and a method of fabricating the same, are disclosed. The SLD includes: an InP substrate having a LD region and a SOA region for amplifying light emitted from the LD region; an optical waveguide having a BRS (buried ridge strip) structure having an active layer of resonant strip pattern formed on the InP substrate and extending from the SOA region to the LD region; a first electrode formed on the active layer in the SOA region, a second electrode formed on the active layer in the LD region and electrically isolated from the first electrode; and a current blocking region interposed between the first electrode and the second electrode in order to electrically isolate the first electrode and the second electrode from each other.Type: GrantFiled: December 7, 2006Date of Patent: October 6, 2009Assignee: Electronics and Telecommunications Research InstituteInventors: Moon Ho Park, Yong Soon Baek, Kwang Ryong Oh
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Patent number: 7551658Abstract: Provided is a buried ridge waveguide laser diode that has improved temperature characteristics and can reduce optical loss by a leakage current. The buried ridge waveguide laser diode includes: a ridge region that extends vertically with a constant width and is composed of a selective etching layer and a first compound layer formed of a first conductive type material on a portion of the clad layer; and a p-n-p current blocking layer that has a thickness identical to the depth of the ridge region on the clad layer outside the ridge region and includes a second compound layer formed of a second conductive type material opposite to the first conductive type material. At this time, the current blocking layer includes the first compound layer extending on the second compound layer.Type: GrantFiled: December 5, 2006Date of Patent: June 23, 2009Assignee: Electronics and Telecommunications Research InstituteInventors: Su Hwan Oh, Ki soo Kim, Oh Kee Kwon, Yong soon Baek
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Publication number: 20090154928Abstract: Provided is a wavelength division multiplexer/demultiplexer having a flat wavelength response. In the wavelength division multiplexer/demultiplexer, a modified taper-shaped optical waveguide is interposed between an input waveguide and a first slab waveguide, such that the distribution of an optical signal input to an Arrayed Waveguide Grating (AWG) has a sinc-function shape. Thus, a flat wavelength response can be obtained in an output waveguide. In addition, the modified taper-shaped optical waveguide interposed to obtain a flat wavelength response has a small size and a simple structure, and thus can be applied to a conventional wavelength division multiplexer/demultiplexer without a design change.Type: ApplicationFiled: September 30, 2008Publication date: June 18, 2009Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCHInventors: Jang Uk SHIN, Sang Ho Park, Young Tak Han, Sang Pil Han, Yong Soon Baek
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Publication number: 20090154923Abstract: Provided is a wavelength selective switch (WSS), and more particularly, a wavelength selective switch for electrically switching a wavelength without physical displacement. The wavelength selective switch includes an optical demultiplexer for dividing an input optical signal into signals having wavelengths corresponding to respective channels, selecting either the optical signal of each channel obtained by dividing the input optical signal or an optical signal input via an add port, and outputting the selected optical signal; and an optical multiplexer including an optical deflecting unit for individually deflecting the optical signals of the respective channels received from the optical demultiplexer according to supplied current or applied voltage, wherein the optical signal of each channel deflected by the optical deflecting unit is output to a specific output port.Type: ApplicationFiled: September 11, 2008Publication date: June 18, 2009Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Oh Kee KWON, Yong Soon Baek, Jang Uk Shin, Young Tak Han, Dong Hun Lee, Chul Wook Lee, Eun Deok Sim, Jong Hoi Kim, Sang Pil Han, Sang Ho Park
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Publication number: 20080212973Abstract: Provided is a bi-directional optical module including: a transmission optical element including an SOA (semiconductor optical amplifier) aligned on an optical axis of an LD (laser diode) formed on a substrate; and a reception optical element comprising a PD (photodiode) including a light receiving surface perpendicular to the optical axis of the LD of the transmission optical element.Type: ApplicationFiled: July 21, 2006Publication date: September 4, 2008Applicant: Electronics and Telecommunications Research InstituteInventors: Jung Ho Song, Yong Soon Baek, Sung II Kim, Ki Soo Kim
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Patent number: 7378292Abstract: Provided is a method of fabricating a semiconductor optical device for use in a subscriber or a wavelength division multiplexing (WDM) optical communication system, in which a laser diode (LD) and a semiconductor optical amplifier (SOA) are integrated in a single active layer. The laser diode (LD) and the semiconductor optical amplifier (SOA) are optically connected to each other, and electrically insulated from each other by ion injection, whereby light generated from the LD is amplified by the SOA to provide low oscillation start current and high intensity of output light when current is individually injected through each electrode.Type: GrantFiled: December 2, 2005Date of Patent: May 27, 2008Assignee: Electronics and Telecommunications Research InstituteInventors: Moon Ho Park, Sahng Gi Park, Su Hwan Oh, Yong Soon Baek, Kwang Ryong Oh, Gyung Ock Kim, Sung Bock Kim
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Patent number: 7373032Abstract: Provided is an optical transceiver module of an optical transceiver, which is used for optical communications. The optical transceiver module prevents electrical crosstalk between a light source and a light receiver. Additionally, the optical transceiver module includes an optical transceiver unit including a light source and a light receiver together integrated into a substrate, a circuit unit including a drive circuit driving the light source and a detect circuit reading a signal of the light receiver, and a crosstalk prevention unit connected between the substrate and ground to prevent electrical crosstalk between the light source and the light receiver.Type: GrantFiled: June 9, 2006Date of Patent: May 13, 2008Assignee: Electronics and Telecommunications Research InstituteInventors: Jeong Woo Park, Hyun Sung Ko, Yong Soon Baek
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Patent number: RE44375Abstract: Provided is an optical transceiver module of an optical transceiver, which is used for optical communications. The optical transceiver module prevents electrical crosstalk between a light source and a light receiver. Additionally, the optical transceiver module includes an optical transceiver unit including a light source and a light receiver together integrated into a substrate, a circuit unit including a drive circuit driving the light source and a detect circuit reading a signal of the light receiver, and a crosstalk prevention unit connected between the substrate and ground to prevent electrical crosstalk between the light source and the light receiver.Type: GrantFiled: May 13, 2010Date of Patent: July 16, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Jeong Woo Park, Hyun Sung Ko, Yong Soon Baek