Patents by Inventor Jinkee Kim
Jinkee Kim 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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Publication number: 20220153551Abstract: A method for controlling an elevator by interworking with external devices in an apparatus for controlling an elevator is provided. The method for controlling an elevator includes generating token information for an external device to which a write command is to be performed and transmitting the token information to the external device, receiving a control message including a write command together with the token information from the external device, verifying the token information, and processing the control message when the token information is verified.Type: ApplicationFiled: November 15, 2021Publication date: May 19, 2022Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, M2M Tech Co.,Ltd.Inventors: Yun Chul CHOI, JinKee KIM, Jung Soo PARK
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Patent number: 9709732Abstract: Described is a technique for the design and manufacture of MMFs. Designs are implemented so as to limit the maximum variation in z(r, ?) with respect to wavelength, where z(r, ?) is the dielectric constant weighted by the square of the wavelength. MMFs for use in CWDM applications are specifically described.Type: GrantFiled: January 30, 2015Date of Patent: July 18, 2017Assignee: OFS FITEL, LLCInventors: Kasyapa Balemarthy, James W Fleming, Jinkee Kim, Robert L Lingle, Jr., Roman Shubochkin, Durgesh Vaidya, Man F Yan
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Patent number: 9690053Abstract: Structures and techniques are described relating to the alignment of multicore fibers within a multifiber connector. These structures and techniques include: multicore fibers having a number of different shapes, including, for example, circular, elliptical, D-shaped, double D-shaped, and polygonal; multifiber ferrules, having a plurality of fiber guide holes therein of various shapes; alignment fixtures for aligning multicore fibers within multifiber ferrules; and various multicore fiber alignment techniques.Type: GrantFiled: May 15, 2015Date of Patent: June 27, 2017Assignee: OFS FITEL, LLCInventors: Kelvin B. Bradley, Jinkee Kim, Gregory A. Sandels
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Patent number: 9568685Abstract: An optical fiber ferrule has a plurality of guide holes therein for guiding a respective plurality of flat-sided fibers at an end of a multifiber optical fiber cable. The fibers' flat sides identify a particular rotational orientation of the fiber. Rotational alignment is achieved by urging the fibers' flat sides against a corresponding reference surface within the ferrule or within an alignment fixture. Also described is a fiber array block having a plurality of V-shaped grooves extending across an outer surface and terminating at an endface. The V-shaped grooves are shaped to guide a respective plurality of flat-sided fibers. A lid is installable across the plurality of V-shaped grooves, over fibers that have been loaded therein.Type: GrantFiled: May 16, 2015Date of Patent: February 14, 2017Assignee: OFS FITEL, LLCInventors: Kelvin B. Bradley, Jinkee Kim, Gregory A. Sandels
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Publication number: 20160370540Abstract: Described is a technique for the design and manufacture of MMFs. Designs are implemented so as to limit the maximum variation in z(r, ?) with respect to wavelength, where z(r, ?) is the dielectric constant weighted by the square of the wavelength. MMFs for use in CWDM applications are specifically described.Type: ApplicationFiled: January 30, 2015Publication date: December 22, 2016Applicant: OFS Fitel, LLCInventors: Kasyapa Balemarthy, James W Fleming, Jinkee Kim, Robert L Lingle, Jr., Roman Shubochkin, Durgesh Vaidya, Man F Yan
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Publication number: 20150247978Abstract: Structures and techniques are described relating to the alignment of multicore fibers within a multifiber connector. These structures and techniques include: multicore fibers having a number of different shapes, including, for example, circular, elliptical, D-shaped, double D-shaped, and polygonal; multifiber ferrules, having a plurality of fiber guide holes therein of various shapes; alignment fixtures for aligning multicore fibers within multifiber ferrules; and various multicore fiber alignment techniques.Type: ApplicationFiled: May 15, 2015Publication date: September 3, 2015Inventors: Kelvin B. Bradley, Jinkee Kim, Gregory A. Sandels
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Publication number: 20150247980Abstract: An optical fiber ferrule has a plurality of guide holes therein for guiding a respective plurality of flat-sided fibers at an end of a multifiber optical fiber cable. The fibers' flat sides identify a particular rotational orientation of the fiber. Rotational alignment is achieved by urging the fibers' flat sides against a corresponding reference surface within the ferrule or within an alignment fixture. Also described is a fiber array block having a plurality of V-shaped grooves extending across an outer surface and terminating at an endface. The V-shaped grooves are shaped to guide a respective plurality of flat-sided fibers. A lid is installable across the plurality of V-shaped grooves, over fibers that have been loaded therein.Type: ApplicationFiled: May 16, 2015Publication date: September 3, 2015Inventors: Kelvin B. Bradley, Jinkee Kim, Gregory A. Sandels
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Patent number: 9075183Abstract: Optical fiber designs are depicted with a core having an alpha profile inner portion and a steep vertical step between the core and a cladding with no shoulder, referred to herein as a truncated core. A further aspect of this invention can include a trench between the truncated core and cladding. In this embodiment, the core performs as not only as the primary light guiding structure, but now also functions essentially the same as that of a trench structure. Thus, what was formally a trench can now be much less negative or even positive. Another embodiment of the present invention includes an optical fiber having a truncated core with the addition of a ledge or shoulder between the core and vertical step, followed directly by a cladding.Type: GrantFiled: February 22, 2011Date of Patent: July 7, 2015Assignee: OFS FITEL, LLCInventors: Xinli Jiang, Jinkee Kim, George Oulundsen, Yi Sun, Durgesh S. Vaidya, Man F. Yan
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Patent number: 9069143Abstract: Structures and techniques are described relating to the alignment of multicore fibers within a multifiber connector. These structures and techniques include: multicore fibers having a number of different shapes, including, for example, circular, elliptical, D-shaped, double D-shaped, and polygonal; multifiber ferrules, having a plurality of fiber guide holes therein of various shapes; alignment fixtures for aligning multicore fibers within multifiber ferrules; and various multicore fiber alignment techniques.Type: GrantFiled: March 16, 2011Date of Patent: June 30, 2015Assignee: OFS FITEL, LLCInventors: Kelvin B. Bradley, Jinkee Kim, Gregory A. Sandels
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Patent number: 9069144Abstract: An optical fiber ferrule has a plurality of guide holes therein for guiding a respective plurality of flat-sided fibers at an end of a multifiber optical fiber cable. The fibers' flat sides identify a particular rotational orientation of the fiber. Rotational alignment is achieved by urging the fibers' flat sides against a corresponding reference surface within the ferrule or within an alignment fixture. Also described is a fiber array block having a plurality of V-shaped grooves extending across an outer surface and terminating at an endface. The V-shaped grooves are shaped to guide a respective plurality of flat-sided fibers. A lid is installable across the plurality of V-shaped grooves, over fibers that have been loaded therein.Type: GrantFiled: May 10, 2012Date of Patent: June 30, 2015Assignee: OFS FITEL, LLCInventors: Kelvin B. Bradley, Jinkee Kim, Gregory A. Sandels
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Patent number: 8858089Abstract: An optical fiber cable connector includes a ferrule with a guide hole that is shaped to closely receive a multicore fiber having a flat side indicative of the rotational orientation of the cores of the multicore fiber. The ferrule includes a flat surface at one side of the guide hole, corresponding in position to the flat side of the multicore fiber. Installing the multicore fiber into the guide hole with its flat side abutting the flat surface along the side of the guide hole provides alignment of the cores with respect to an optical component to which the multicore fiber endface is to be connected.Type: GrantFiled: May 10, 2012Date of Patent: October 14, 2014Assignee: OFS Fitel, LLCInventors: Kelvin B. Bradley, Jinkee Kim, Gregory A. Sandels, Willard C. White
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Publication number: 20140270670Abstract: The specification describes multimode optical fibers with specific design parameters, i.e., controlled refractive index design ratios and dimensions, which render the optical fibers largely immune to moderately severe bends. The modal structure in the optical fibers is also largely unaffected by bending, thus leaving the optical fiber bandwidth essentially unimpaired. Bend performance results were established by DMD measurements of fibers wound on mandrels vs. measurements of fibers with no severe bends.Type: ApplicationFiled: July 29, 2013Publication date: September 18, 2014Inventors: Xinli Jiang, Jinkee Kim, George E Oulundsen, Durgesh Vaidya, Man F Yan
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Patent number: 8737791Abstract: Optical fiber refractive index profile designs having an alpha core profile and a negative index trench to control bend loss, are modified by truncating the edge of the alpha core profile and adding a ledge to the truncated core. The result is low bend loss and preservation of low differential mode delay and high bandwidth.Type: GrantFiled: February 9, 2011Date of Patent: May 27, 2014Assignee: OFS Fitel, LLCInventors: Xinli Jiang, Jinkee Kim, George Oulundsen, Yi Sun
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Patent number: 8520994Abstract: The specification describes multimode optical fibers with specific design parameters, i.e., controlled refractive index design ratios and dimensions, which render the optical fibers largely immune to moderately severe bends. The modal structure in the optical fibers is also largely unaffected by bending, thus leaving the optical fiber bandwidth essentially unimpaired. Bend performance results were established by DMD measurements of fibers wound on mandrels vs. measurements of fibers with no severe bends.Type: GrantFiled: August 17, 2009Date of Patent: August 27, 2013Inventors: Jinkee Kim, George E. Oulundsen, Durgesh Shivram Vaidya, Man F. Yan, Xinli Jiang
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Publication number: 20120219254Abstract: An optical fiber cable connector includes a ferrule with a guide hole that is shaped to closely receive a multicore fiber having a flat side indicative of the rotational orientation of the cores of the multicore fiber. The ferrule includes a flat surface at one side of the guide hole, corresponding in position to the flat side of the multicore fiber. Installing the multicore fiber into the guide hole with its flat side abutting the flat surface along the side of the guide hole provides alignment of the cores with respect to an optical component to which the multicore fiber endface is to be connected.Type: ApplicationFiled: May 10, 2012Publication date: August 30, 2012Applicant: OFS Fitel, LLCInventors: Kelvin B. Bradley, Jinkee Kim, Gregory A. Sandels, Willard C. White
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Publication number: 20120219255Abstract: An optical fiber ferrule has a plurality of guide holes therein for guiding a respective plurality of flat-sided fibers at an end of a multifiber optical fiber cable. The fibers' flat sides identify a particular rotational orientation of the fiber. Rotational alignment is achieved by urging the fibers' flat sides against a corresponding reference surface within the ferrule or within an alignment fixture. Also described is a fiber array block having a plurality of V-shaped grooves extending across an outer surface and terminating at an endface. The V-shaped grooves are shaped to guide a respective plurality of flat-sided fibers. A lid is installable across the plurality of V-shaped grooves, over fibers that have been loaded therein.Type: ApplicationFiled: May 10, 2012Publication date: August 30, 2012Applicant: OFS Fitel, LLCInventors: Kelvin B. Bradley, Jinkee Kim, Gregory A. Sandels
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Publication number: 20110243519Abstract: Optical fiber designs are depicted with a core having an alpha profile inner portion and a steep vertical step between the core and a cladding with no shoulder, referred to herein as a truncated core. A further aspect of this invention can include a trench between the truncated core and cladding. In this embodiment, the core performs as not only as the primary light guiding structure, but now also functions essentially the same as that of a trench structure. Thus, what was formally a trench can now be much less negative or even positive. Another embodiment of the present invention includes an optical fiber having a truncated core with the addition of a ledge or shoulder between the core and vertical step, followed directly by a cladding.Type: ApplicationFiled: February 22, 2011Publication date: October 6, 2011Inventors: Xinli Jiang, Jinkee Kim, George Oulundsen, Yi Sun, Durgesh S. Vaidya, Man F. Yan
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Publication number: 20110229086Abstract: Structures and techniques are described relating to the alignment of multicore fibers within a multifiber connector. These structures and techniques include: multicore fibers having a number of different shapes, including, for example, circular, elliptical, D-shaped, double D-shaped, and polygonal; multifiber ferrules, having a plurality of fiber guide holes therein of various shapes; alignment fixtures for aligning multicore fibers within multifiber ferrules; and various multicore fiber alignment techniques.Type: ApplicationFiled: March 16, 2011Publication date: September 22, 2011Applicant: OFS FITEL, LLCInventors: Kelvin B. Bradley, Jinkee Kim, Gregory A. Sandels
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Publication number: 20110194827Abstract: Optical fiber refractive index profile designs having an alpha core profile and a negative index trench to control bend loss, are modified by truncating the edge of the alpha core profile and adding a ledge to the truncated core. The result is low bend loss and preservation of low differential mode delay and high bandwidth.Type: ApplicationFiled: February 9, 2011Publication date: August 11, 2011Inventors: Xinli Jiang, Jinkee Kim, George Oulundsen, Yi Sun
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Publication number: 20110188822Abstract: Certain embodiments of the invention may include systems and methods for providing optical fiber coatings to reduce microbend losses. According to an example embodiment of the invention, a method is provided for coating an optical fiber to reduce microbend losses and polarization mode dispersion (PMD). The method includes applying a primary layer to the optical fiber, wherein the optical fiber comprises a core region surrounded by a cladding region. The method includes applying a secondary layer to the primary layer, and curing the primary and secondary layers, wherein the cured primary layer adheres to the cladding region with a minimum pullout adhesion of 6 N/cm, and the cured secondary layer has an in situ modulus of about 700 MPa to about 1200 MPa at room temperature.Type: ApplicationFiled: February 4, 2010Publication date: August 4, 2011Applicant: OFS FITEL, LLCInventors: Kariofilis Konstadinidis, Harry Garner, Peter Haslov, Jinkee Kim, Debra Simoff, Durgesh Vaidya, Yoshihiro Arashitani