Patents by Inventor Geon Jeong
Geon Jeong 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: 11932861Abstract: A recombinant vector according to an embodiment is for genome editing without inserting a replicon into the plant genome in a T0 generation plant. The recombinant vector includes a geminivirus-based replicon between the sequence of LB (left border) and sequence of RB (right border) of Ti plasmid. A method of genome editing without inserting a replicon into the plant genome in a T0 generation plant according to an embodiment includes transforming a plant cell by inserting a foreign gene to the aforementioned recombinant vector.Type: GrantFiled: September 10, 2019Date of Patent: March 19, 2024Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION GYEONGSANG NATIONAL UNIVERSITYInventors: Jae Yean Kim, Tien Van Vu, Jihae Kim, Se Jeong Jeong, Hyun Jeong Kim, Seo-Jin Park, Mil Thi Tran, Velu Sivankalyani, Yeon Woo Sung, Thi Hai Duong Doan, Dibyajyoti Pramanik, Mahadev Rahul Shelake, Geon Hui Son
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Patent number: 9341770Abstract: An optical fiber connector embedded with a Bragg grating includes: a ferrule formed with a reception unit for inserting and fixing a temperature compensation connection port from one end, a space unit extended from the reception unit toward inside, and an optical fiber insertion hole penetrating a side surface of the other end along a center of an axial direction from an inclined surface gradually narrowed toward inside of the space unit; the temperature compensation connection port formed with a connection unit contacting with the reception unit of the ferrule, an optical fiber support unit having an outer diameter smaller than an inner diameter of the space unit of the ferrule from the connection unit and protruding to be spaced apart from an inlet of the ferrule by a predetermined distance to form a space for accommodating the Bragg grating and support an optical fiber, and the optical fiber insertion hole penetrating both ends along the center of the axial direction to insert the optical fiber; an opticalType: GrantFiled: April 28, 2011Date of Patent: May 17, 2016Assignee: MEL TELECOM INC.Inventors: Byoung Whi Kim, Mahn Yong Park, Gil Dong Lee, Geon Jeong
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Patent number: 8644711Abstract: In a Wavelength-Division-Multiplexed Passive Optical Network (WDM-PON) utilizing a conventional downstream optical signal reusing method, there is an inventory problem that different optical transmitter types need to be provided for the operation, management, replacement, etc. of a system. A WDM-PON system according to the present invention, includes: a seed light (SL) unit generating a seed light whose wavelength intervals and center wavelengths are adjusted using at least one seed light source; an optical line terminal (OLT) receiving the wavelength-multiplexed seed light from the seed light unit, transmitting a downstream optical signal to a subscriber of the WDM-PON, and receiving a upstream optical signal from the subscriber; and an optical network unit (ONU) receiving the downstream optical signal from the OLT, flattening and modulating the downstream optical signal with upstream data so that the downstream optical signal is reused for carrying upstream data.Type: GrantFiled: July 6, 2007Date of Patent: February 4, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Byoung-Whi Kim, Manyong Park, Woo-Ram Lee, Bong-Tae Kim, Seung-Hyun Cho, Jie-Hyun Lee, Geon Jeong, Chulyoung Kim, Dae-Ung Kim, Byung-Yong Kang
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Publication number: 20130044984Abstract: An optical fiber connector embedded with a Bragg grating includes: a ferrule formed with a reception unit for inserting and fixing a temperature compensation connection port from one end, a space unit extended from the reception unit toward inside, and an optical fiber insertion hole penetrating a side surface of the other end along a center of an axial direction from an inclined surface gradually narrowed toward inside of the space unit; the temperature compensation connection port formed with a connection unit contacting with the reception unit of the ferrule, an optical fiber support unit having an outer diameter smaller than an inner diameter of the space unit of the ferrule from the connection unit and protruding to be spaced apart from an inlet of the ferrule by a predetermined distance to form a space for accommodating the Bragg grating and support an optical fiber, and the optical fiber insertion hole penetrating both ends along the center of the axial direction to insert the optical fiber; an opticalType: ApplicationFiled: April 28, 2011Publication date: February 21, 2013Inventors: Byoung Whi Kim, Mahn Yong Park, Gil Dong Lee, Geon Jeong
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Publication number: 20120099611Abstract: Provided is a wavelength tunable external cavity semiconductor laser module by a thermo-optic effect of a semiconductor optical waveguide. The wavelength tunable external cavity semiconductor laser module includes: a light source generating wideband light; a semiconductor optical waveguide having one end optically coupled to the light source; a Bragg grating formed on the optical waveguide; a thin film heater provided at an upper portion of the Bragg grating and controlling a reflection band of the Bragg grating by a thermo-electric effect; a first temperature sensor provided at an upper portion of the optical waveguide; a thermoelectric cooler (TEC) provided at a lower portion of the optical waveguide; a heat insulating layer provided between the optical waveguide and the TEC; and an optical fiber optically coupled to the other end of the optical waveguide.Type: ApplicationFiled: June 15, 2009Publication date: April 26, 2012Applicant: MELInventors: Byoung Whi Kim, Mahn Yong Park, Geon Jeong
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Patent number: 7995626Abstract: Provided is an athermal external cavity laser (ECL), whose output optical power and output wavelength can be kept regular irrespective of temperature changes without using additional temperature controlling components. The ECL comprises: a semiconductor amplifier; an optical fiber comprising a core in which a Bragg grating is formed and a cladding surrounding the core; and a thermosetting polymer that fixes the optical fiber to a ferrule and has a negative thermooptical coefficient, wherein the thickness of the cladding surrounding the core in which the Bragg grating is formed is smaller than the portion of the cladding surrounding the portion of the core where the Bragg grating is not formed, and the thermosetting polymer the negative thermooptical coefficient surrounds the cladding.Type: GrantFiled: July 17, 2009Date of Patent: August 9, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Jie Hyun Lee, Mahn Yong Park, Geon Jeong, Chul Young Kim, Seung Hyun Cho, Woo Ram Lee, Byoung Whi Kim
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Publication number: 20110026923Abstract: In a Wavelength-Division-Multiplexed Passive Optical Network (WDM-PON) utilizing a conventional downstream optical signal reusing method, there is an inventory problem that different optical transmitter types need to be provided for the operation, management, replacement, etc. of a system. A WDM-PON system according to the present invention, includes: a seed light (SL) unit generating a seed light whose wavelength intervals and center wavelengths are adjusted using at least one seed light source; an optical line terminal (OLT) receiving the wavelength-multiplexed seed light from the seed light unit, transmitting a downstream optical signal to a subscriber of the WDM-PON, and receiving a upstream optical signal from the subscriber; and an optical network unit (ONU) receiving the downstream optical signal from the OLT, flattening and modulating the downstream optical signal with upstream data so that the downstream optical signal is reused for carrying upstream data.Type: ApplicationFiled: July 6, 2007Publication date: February 3, 2011Inventors: Byoung-Whi Kim, Manyong Park, Woo-Ram Lee, Bong-Tae Kim, Seung-Hyun Cho, Jie-Hyun Lee, Geon Jeong, Chulyoung Kim, Dae-Ung Kim, Byung-Yong Kang
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Patent number: 7679819Abstract: A reflective semiconductor optical amplifier (RSOA) and an operating system based on a downstream optical signal reuse method with feed-forward current injection are provided. The RSOA has two active regions and includes a reflecting plane that reflects an input optical signal; and an optical amplifying semiconductor including a rear portion, which is positioned at a side of the reflecting plane and to which a signal having polarity opposite to that of the input optical signal is injected, and a front portion, which is positioned at a side opposite to the side of the rear portion facing the reflecting plane and which the input optical signal is passed though and a signal used to modulate a reflected input optical signal from the reflecting plane to an output optical signal is injected into.Type: GrantFiled: January 9, 2007Date of Patent: March 16, 2010Assignee: Electronics and Telecommunications Research InstituteInventors: Byoung Whi Kim, Mahn Yong Park, Seung Hyun Cho, Woo Ram Lee, Jie Hyun Lee, Geon Jeong, Chul Young Kim
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Publication number: 20100014545Abstract: Provided is an athermal external cavity laser (ECL), whose output optical power and output wavelength can be kept regular irrespective of temperature changes without using additional temperature controlling components. The ECL comprises: a semiconductor amplifier; an optical fiber comprising a core in which a Bragg grating is formed and a cladding surrounding the core; and a thermosetting polymer that fixes the optical fiber to a ferrule and has a negative thermooptical coefficient, wherein the thickness of the cladding surrounding the core in which the Bragg grating is formed is smaller than the portion of the cladding surrounding the portion of the core where the Bragg grating is not formed, and the thermosetting polymer the negative thermooptical coefficient surrounds the cladding.Type: ApplicationFiled: July 17, 2009Publication date: January 21, 2010Inventors: Jie Hyun Lee, Mahn Yong Park, Geon Jeong, Chul Young Kim, Seung Hyun Cho, Woo Ram Lee, Byoung Whi Kim
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Patent number: 7580441Abstract: Provided is an athermal external cavity laser (ECL), whose output optical power and output wavelength can be kept regular irrespective of temperature changes without using additional temperature controlling components. The ECL comprises: a semiconductor amplifier; an optical fiber comprising a core in which a Bragg grating is formed and a cladding surrounding the core; and a thermosetting polymer that fixes the optical fiber to a ferrule and has a negative thermooptical coefficient, wherein the thickness of the cladding surrounding the core in which the Bragg grating is formed is smaller than the portion of the cladding surrounding the portion of the core where the Bragg grating is not formed, and the thermosetting polymer the negative thermooptical coefficient surrounds the cladding.Type: GrantFiled: December 5, 2006Date of Patent: August 25, 2009Assignee: Electronics and Telecommunications Research InstituteInventors: Jie Hyun Lee, Mahn Yong Park, Geon Jeong, Chul Young Kim, Seung Hyun Cho, Woo Ram Lee, Byoung Whi Kim
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Publication number: 20070183788Abstract: A reflective semiconductor optical amplifier (RSOA) and an operating system based on a downstream optical signal reuse method with feed-forward current injection are provided. The RSOA has two active regions and includes a reflecting plane that reflects an input optical signal; and an optical amplifying semiconductor including a rear portion, which is positioned at a side of the reflecting plane and to which a signal having polarity opposite to that of the input optical signal is injected, and a front portion, which is positioned at a side opposite to the side of the rear portion facing the reflecting plane and which the input optical signal is passed though and a signal used to modulate a reflected input optical signal from the reflecting plane to an output optical signal is injected into.Type: ApplicationFiled: January 9, 2007Publication date: August 9, 2007Inventors: Byoung Kim, Mahn Park, Seung Cho, Woo Lee, Jie Lee, Geon Jeong, Chul Kim
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Publication number: 20070127538Abstract: Provided is an athermal external cavity laser (ECL), whose output optical power and output wavelength can be kept regular irrespective of temperature changes without using additional temperature controlling components. The ECL comprises: a semiconductor amplifier; an optical fiber comprising a core in which a Bragg grating is formed and a cladding surrounding the core; and a thermosetting polymer that fixes the optical fiber to a ferrule and has a negative thermooptical coefficient, wherein the thickness of the cladding surrounding the core in which the Bragg grating is formed is smaller than the portion of the cladding surrounding the portion of the core where the Bragg grating is not formed, and the thermosetting polymer the negative thermooptical coefficient surrounds the cladding.Type: ApplicationFiled: December 5, 2006Publication date: June 7, 2007Inventors: Jie Lee, Mahn Park, Geon Jeong, Chul Kim, Seung Cho, Woo Lee, Byoung Kim