Patents by Inventor Ki-Hong Yoon
Ki-Hong Yoon 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: 11437778Abstract: According to an embodiment, a wavelength tunable laser comprising a gain region and a wavelength tunable area is disclosed. The wavelength tunable area comprises: a lower clad layer; a passive optical waveguide positioned on the lower clad layer; an upper clad layer positioned on the passive optical waveguide; a drive electrode positioned on the upper clad layer; a current blocking layer positioned on the drive electrode; a heater positioned on the current blocking layer; and a first insulating groove and a second insulating groove which are positioned so as to face each other with the passive optical waveguide therebetween.Type: GrantFiled: November 28, 2017Date of Patent: September 6, 2022Assignee: OE Solutions Co., Ltd.Inventor: Ki Hong Yoon
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Publication number: 20220021187Abstract: Provided are a laser element and a method for manufacturing the same, in which the laser element includes a first clad layer, an optical waveguide disposed on the first clad layer, a second clad layer disposed on the optical waveguide, a first electrode disposed on the second clad layer, and a dummy clad disposed on the optical waveguide and apart from the second clad layer and the first electrode.Type: ApplicationFiled: November 27, 2018Publication date: January 20, 2022Applicant: OE Solutions Co., Ltd.Inventors: Ki Hong YOON, Seon Jae CHOI
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Publication number: 20200388989Abstract: According to an embodiment, a wavelength tunable laser comprising a gain region and a wavelength tunable area is disclosed. The wavelength tunable area comprises: a lower clad layer; a passive optical waveguide positioned on the lower clad layer; an upper clad layer positioned on the passive optical waveguide; a drive electrode positioned on the upper clad layer; a current blocking layer positioned on the drive electrode; a heater positioned on the current blocking layer; and a first insulating groove and a second insulating groove which are positioned so as to face each other with the passive optical waveguide therebetween.Type: ApplicationFiled: November 28, 2017Publication date: December 10, 2020Applicant: OE SOLUTIONS CO., LTD.Inventor: Ki Hong YOON
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Patent number: 9407061Abstract: Provided herein is an external-cavity type wavelength tunable laser including gain medium configured to generate an optical signal and amplify the generated optical signal based on a bias current applied; an external reflector configured to be coupled optically with the gain medium; a second thermistor provided on the side of the gain medium and configured to measure a temperature of the gain medium; a first thermistor provided on the external reflector and configured to measure a temperature of the external reflector; and a thermoelectric cooler configured to transfer generated heat based on the temperatures measured by the first and second thermistors.Type: GrantFiled: July 17, 2015Date of Patent: August 2, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Byung Seok Choi, Ki Hong Yoon
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Patent number: 9343614Abstract: 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.Type: GrantFiled: February 6, 2015Date of Patent: May 17, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Su Hwan Oh, Ki-Hong Yoon, Kisoo Kim, O-Kyun Kwon, Oh Kee Kwon, Byung-Seok Choi, Jongbae Kim
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Publication number: 20160020575Abstract: Provided herein is an external-cavity type wavelength tunable laser including gain medium configured to generate an optical signal and amplify the generated optical signal based on a bias current applied; an external reflector configured to be coupled optically with the gain medium; a second thermistor provided on the side of the gain medium and configured to measure a temperature of the gain medium; a first thermistor provided on the external reflector and configured to measure a temperature of the external reflector; and a thermoelectric cooler configured to transfer generated heat based on the temperatures measured by the first and second thermistors.Type: ApplicationFiled: July 17, 2015Publication date: January 21, 2016Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Byung Seok CHOI, Ki Hong YOON
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Publication number: 20150288143Abstract: Provided herein is a tunable external cavity laser comprising: a gain medium configured to create an optical signal; an external reflector configured to be coupled to the gain medium, and to comprise a Bragg grating; and a phase control section configured to adjust a phase of an entire laser, but to adjust a wavelength of the laser to a longer wavelength than a peak reflectivity of the external reflector.Type: ApplicationFiled: April 1, 2015Publication date: October 8, 2015Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Byung Seok CHOI, O Kyun KWON, Ki Soo KIM, Jong Sool JEONG, Su Hwan OH, Ki Hong YOON
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Patent number: 9099839Abstract: Disclosed is a wavelength tunable laser apparatus, including: a first substrate configured to reflect inflow laser light, and tune a wavelength of the reflected laser light; and a second substrate configured to adjust a gain of the laser light input from the first substrate, reflect a specific wavelength of the laser light, and adjust a phase of oscillated laser light, in which the first substrate and the second substrate are formed in a single package form.Type: GrantFiled: September 5, 2014Date of Patent: August 4, 2015Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Ki Hong Yoon, Byung Seok Choi, O Kyun Kwon, Jong Sool Jeong, Ki Soo Kim
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Publication number: 20150155428Abstract: 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.Type: ApplicationFiled: February 6, 2015Publication date: June 4, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Su Hwan OH, Ki-Hong YOON, Kisoo KIM, O-Kyun KWON, Oh Kee KWON, Byung-Seok CHOI, Jongbae KIM
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Patent number: 8995480Abstract: The present disclosure relates to a tunable laser module including a light gain area unit for outputting an optical signal; an optical distributor for separating the optical signal output from the light gain area unit; two comb reflection units for reflecting a part of optical signals separated by the optical distributor and allow a part of the optical signals to penetrate; two phase units for changing phases of the optical signals penetrating the two comb reflection units; an optical coupler for combining the optical signals of which the phases are changed by the two phase units; and an optical amplifier for amplifying the optical signal combined by the optical coupler, wherein the light gain area unit oscillates a laser by totally reflecting the optical signals reflected by the two comb reflection units.Type: GrantFiled: November 14, 2012Date of Patent: March 31, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Ki-Hong Yoon, O-Kyun Kwon, Su Hwan Oh, Kisoo Kim, Byung-seok Choi, Hyun Soo Kim
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Patent number: 8989229Abstract: 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.Type: GrantFiled: June 1, 2012Date of Patent: March 24, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Su Hwan Oh, Ki-Hong Yoon, Kisoo Kim, O-Kyun Kwon, Oh Kee Kwon, Byung-seok Choi, Jongbae Kim
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Patent number: 8902937Abstract: The present disclosure relates to a compact external cavity tunable laser apparatus. The laser apparatus includes a substrate, an external cavity tunable reflecting unit that reflects laser light entering from the outside on the substrate and selects and varies a wavelength of the reflected laser light, an optical fiber that outputs the laser light on the substrate; and an highly integrated light source that integrates the laser light input from the external cavity tunable reflecting unit using inclined input and output waveguides, a curved waveguide, and a straight waveguide to output the integrated laser light to the optical fiber in order to match an optical axis formed with the external cavity tunable reflecting unit with an optical axis formed with an optical fiber.Type: GrantFiled: March 21, 2013Date of Patent: December 2, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Ki-Hong Yoon, O-Kyun Kwon, Kisoo Kim, Byungseok Choi, Hyun Soo Kim, Su Hwan Oh
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Publication number: 20140064306Abstract: The present disclosure relates to a compact external cavity tunable laser apparatus. The laser apparatus includes a substrate, an external cavity tunable reflecting unit that reflects laser light entering from the outside on the substrate and selects and varies a wavelength of the reflected laser light, an optical fiber that outputs the laser light on the substrate; and an highly integrated light source that integrates the laser light input from the external cavity tunable reflecting unit using inclined input and output waveguides, a curved waveguide, and a straight waveguide to output the integrated laser light to the optical fiber in order to match an optical axis formed with the external cavity tunable reflecting unit with an optical axis formed with an optical fiber.Type: ApplicationFiled: March 21, 2013Publication date: March 6, 2014Inventors: Ki-Hong Yoon, O-Kyun Kwon, Kisoo Kim, Byungseok Choi, Hyun Soo Kim, Su Hwan Oh
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Publication number: 20130243013Abstract: The present disclosure relates to a tunable laser module including a light gain area unit for outputting an optical signal; an optical distributor for separating the optical signal output from the light gain area unit; two comb reflection units for reflecting a part of optical signals separated by the optical distributor and allow a part of the optical signals to penetrate; two phase units for changing phases of the optical signals penetrating the two comb reflection units; an optical coupler for combining the optical signals of which the phases are changed by the two phase units; and an optical amplifier for amplifying the optical signal combined by the optical coupler, wherein the light gain area unit oscillates a laser by totally reflecting the optical signals reflected by the two comb reflection units.Type: ApplicationFiled: November 14, 2012Publication date: September 19, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: Ki-Hong YOON, O-Kyun Kwon, Su Hwan Oh, Kisoo Kim, Byung-seok Choi, Hyun Soo Kim
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Patent number: 8422530Abstract: Provided is a laser module. The laser module comprises: a substrate; an gain unit oscillating a laser light on the substrate; an external resonance reflecting unit total-reflecting the laser light at an external of the substrate adjacent to one side of the gain unit; and an inner resonance reflecting unit reflecting the laser light to the external resonance reflecting unit at the substrate between the modulating unit and gain unit and outputting the laser light to the modulating unit.Type: GrantFiled: December 7, 2010Date of Patent: April 16, 2013Assignee: Electronics and Telecommunications Research InstituteInventor: Ki-Hong Yoon
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Patent number: 8363685Abstract: Provided is a wavelength tunable external cavity laser (laser beam) generating device. The wavelength tunable external cavity laser generating devices includes: an optical amplifier, a comb reflector, and an optical signal processor connected in series on a first substrate; and an external wavelength tunable reflector disposed on a second substrate adjacent to the first substrate and connected to the optical amplifier, wherein the comb reflector includes: a waveguide disposed on the first substrate; a first diffraction grating disposed at one end of the waveguide adjacent to the optical amplifier; and a second diffraction grating disposed at the other end of the waveguide adjacent to the optical signal processor, wherein the optical amplifier, the comb reflector, and the optical signal processor constitute a continuous waveguide.Type: GrantFiled: January 28, 2011Date of Patent: January 29, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Hyun Soo Kim, Ki-Hong Yoon, Kisoo Kim, Byung-Seok Choi, O-Kyun Kwon
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Publication number: 20120307857Abstract: 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.Type: ApplicationFiled: June 1, 2012Publication date: December 6, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Su Hwan Oh, Ki-Hong Yoon, Kisoo Kim, O-Kyun Kwon, Oh Kee Kwon, Byung-Seok Choi, Jongbae Kim
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Publication number: 20120281723Abstract: Provided is a wavelength-tunable external cavity laser. The wavelength-tunable external cavity laser includes a housing, a planar lightwave circuit (PLC) device disposed within the housing, a pump light source disposed at a side of the PLC device within the housing, and a modulation part disposed at the other side of the PLC device facing the pump light source within the housing.Type: ApplicationFiled: May 1, 2012Publication date: November 8, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Su Hwan OH, Ki-Hong Yoon, Kisoo Kim
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Publication number: 20120106578Abstract: A wavelength-tunable external cavity laser generating device is provided. The wavelength-tunable external cavity laser generating device includes a reflection-type multi-mode interferometer, an optical amplifier disposed between the reflection-type multi-mode interferometer and an external wavelength-tunable reflector to amplify light, and an optical signal processor configured to process light from the reflection-type multi-mode interferometer. The reflection-type multi-mode interferometer includes a multi-mode waveguide, an input waveguide connecting the optical amplifier and one end of the multi-mode waveguide, and an output waveguide configured to connect the optical signal processor and the other end of the multi-mode waveguide.Type: ApplicationFiled: September 23, 2011Publication date: May 3, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyun Soo KIM, Jong Sool Jeong, Ki-Hong Yoon, Kisoo Kim, O-Kyun Kwon
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Publication number: 20120093178Abstract: Provided is a wavelength tunable external cavity laser generating device. The wavelength tunable external cavity laser generating devices includes: an optical amplifier, a comb reflector, and an optical signal processor connected in series on a first substrate; and an external wavelength tunable reflector disposed on a second substrate adjacent to the first substrate and connected to the optical amplifier, wherein the comb reflector includes: a waveguide disposed on the first substrate; a first diffraction grating disposed at one end of the waveguide adjacent to the optical amplifier; and a second diffraction grating disposed at the other end of the waveguide adjacent to the optical signal processor, wherein the optical amplifier, the comb reflector, and the optical signal processor constitute a continuous waveguide.Type: ApplicationFiled: January 28, 2011Publication date: April 19, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyun Soo KIM, Ki-Hong YOON, Kisoo KIM, Byung-Seok CHOI, O-Kyun Kwon