Patents by Inventor Rostislav Radiyevich Khrapko
Rostislav Radiyevich Khrapko 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: 11921366Abstract: A multi core optical fiber that includes a plurality of cores disposed in a cladding. The plurality of cores include a first core and a second core. The first core has a first propagation constant ?1, the second core has a second propagation constant ?2, the cladding has a cladding propagation constant ?0, and (I).Type: GrantFiled: November 7, 2019Date of Patent: March 5, 2024Assignee: Corning IncorporatedInventors: Rostislav Radiyevich Khrapko, Sukru Ekin Kocabas, Robert Adam Modavis, Daniel Aloysius Nolan, Jun Yang
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Publication number: 20230417983Abstract: An optical fiber comprising a core region doped with a first alkali dopant and a second alkali dopant. The first alkali dopant has a first average core concentration of C1 and a first diffusivity D1. The second alkali dopant has a second average core concentration of C2 and a second diffusivity D2. An outer cladding region surrounds the core region. The diffusivities D1, D2 of the first and second alkali dopants satisfy the relation D1>D2. The average core concentrations C1, C2 of the first and second alkali dopants satisfy the relation 0.1?C2/C1?1.Type: ApplicationFiled: June 20, 2023Publication date: December 28, 2023Inventors: Sushmit Sunil Kumar Goyal, Rostislav Radiyevich Khrapko, Craig Daniel Nie, Benjamin Pelham Schrock, Samuel David Stewart, Pushkar Tandon
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Publication number: 20230167002Abstract: The present invention relates to a method of forming an optical fiber precursor including: forming an alkali metal doped tube; inserting an optical fiber core rod within the alkali metal doped tube; forming a cladding jacket around the alkali metal doped tube; and diffusing an alkali metal from the alkali metal doped tube through a surface of the optical fiber core rod. The present invention further relates to an optical fiber preform having: an optical fiber core rod; an alkali metal doped tube surrounding the optical fiber core rod; and a cladding jacket surrounding the alkali metal doped tube.Type: ApplicationFiled: November 28, 2022Publication date: June 1, 2023Inventors: Dane Alphanso Christie, Richard Michael Fiacco, Rostislav Radiyevich Khrapko, Ming-Jun Li, Craig Daniel Nie
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Publication number: 20230168428Abstract: An optical fiber includes a core region of silica glass doped with an alkali metal oxide. A depressed-index cladding region surrounds the core region and comprises silica glass doped with a first concentration of fluorine. The depressed-index cladding region has a minimum relative refractive index ?3min in a range from ?0.80% to ?0.30%. An outer cladding region comprises silica glass doped with a second, lesser concentration. The outer cladding region has a relative refractive index ?4, where ?4??3min>0.05%. The optical fiber has a time-to-peak hydrogen aging value at 23° C. of less than 100 hours upon exposure to an atmosphere having a total pressure of 1 atm and containing a partial pressure of 0.01 atm H2 and a partial pressure of 0.99 atm N2. The optical fiber exhibits an attenuation <0.16 dB/km.Type: ApplicationFiled: November 18, 2022Publication date: June 1, 2023Inventors: Rostislav Radiyevich Khrapko, Hazel Benton Matthews, III, Pushkar Tandon
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Publication number: 20220371952Abstract: A method of manufacturing an optical fiber, the method including mounting a glass sleeve in a selective etching apparatus. The sleeve comprising one or more axial through-holes, and the etching apparatus comprising a first end cap with a central aperture disposed therethrough, the first end cap being attached to a first surface of the sleeve. The method further including exposing the sleeve to an acid solution such that a first portion of the first surface is exposed to the acid solution and a second portion of the first surface is not exposed to the acid solution. The first portion being adjacent to the central aperture when the sleeve is mounted in the selective etching apparatus, and the second portion being covered by the first end cap when the sleeve is mounted in the selective etching apparatus.Type: ApplicationFiled: May 20, 2022Publication date: November 24, 2022Inventors: Rostislav Radiyevich Khrapko, Mark Alan McDermott, Matthew Artus Tuggle, Rene Yau Flores
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Publication number: 20220306516Abstract: The vacuum-based methods of forming an optical fiber preform include applying a vacuum to a preform assembly. The preform assembly has at least one glass cladding section with one or more axial through holes, with one or more canes respectively residing in the one or more axial through holes. The opposite ends of the at least one glass cladding section are capped to define a substantially sealed internal chamber. A vacuum is applied to the substantially sealed internal chamber to define a vacuum-held preform assembly. The methods also include heating the vacuum-held preform assembly to just above the glass softening point to consolidate the vacuum-held preform to form the cane-based glass preform. An optical fiber is formed by drawing the cane-based glass preform. The same furnace used to consolidate the vacuum-held preform can be used to draw the optical fiber.Type: ApplicationFiled: May 24, 2022Publication date: September 29, 2022Inventor: Rostislav Radiyevich Khrapko
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Patent number: 11370689Abstract: The vacuum-based methods of forming an optical fiber preform include applying a vacuum to a preform assembly. The preform assembly has at least one glass cladding section with one or more axial through holes, with one or more canes respectively residing in the one or more axial through holes. The opposite ends of the at least one glass cladding section are capped to define a substantially sealed internal chamber. A vacuum is applied to the substantially sealed internal chamber to define a vacuum-held preform assembly. The methods also include heating the vacuum-held preform assembly to just above the glass softening point to consolidate the vacuum-held preform to form the cane-based glass preform. An optical fiber is formed by drawing the cane-based glass preform. The same furnace used to consolidate the vacuum-held preform can be used to draw the optical fiber.Type: GrantFiled: February 14, 2020Date of Patent: June 28, 2022Assignee: Corning IncorporatedInventor: Rostislav Radiyevich Khrapko
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Publication number: 20220179152Abstract: A polarization controller comprising: (i) an optical fiber, and (ii) a carrier surrounding the optical fiber, the carrier comprising an off-center through hole with at least one collapsed region, such that the optical fiber is situated within the through hole and contacts the at least one collapsed region of the through hole, and the collapsed region exerts pressure on the optical fiber.Type: ApplicationFiled: February 25, 2022Publication date: June 9, 2022Inventors: Rostislav Radiyevich Khrapko, William James Miller, Daniel Aloysius Nolan, Katerina Hristova Rousseva, Lucas Wayne Yeary
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Patent number: 11294122Abstract: A polarization controller comprising: (i) an optical fiber, and (ii) a carrier surrounding the optical fiber, the carrier comprising an off-center through hole with at least one collapsed region, such that the optical fiber is situated within the through hole and contacts the at least one collapsed region of the through hole, and the collapsed region exerts pressure on the optical fiber.Type: GrantFiled: May 17, 2021Date of Patent: April 5, 2022Assignee: Corning IncorporatedInventors: Rostislav Radiyevich Khrapko, William James Miller, Daniel Aloysius Nolan, Katerina Hristova Rousseva, Lucas Wayne Yeary
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Publication number: 20220035096Abstract: A polarization controller comprising: (i) an optical fiber, and (ii) a carrier surrounding the optical fiber, the carrier comprising an off-center through hole with at least one collapsed region, such that the optical fiber is situated within the through hole and contacts the at least one collapsed region of the through hole, and the collapsed region exerts pressure on the optical fiber.Type: ApplicationFiled: May 17, 2021Publication date: February 3, 2022Inventors: Rostislav Radiyevich Khrapko, William James Miller, Daniel Aloysius Nolan, Katerina Hristova Rousseva, Lucas Wayne Yeary
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Publication number: 20220026749Abstract: A multi core optical fiber that includes a plurality of cores disposed in a cladding. The plurality of cores include a first core and a second core. The first core has a first propagation constant ?1, the second core has a second propagation constant ?2, the cladding has a cladding propagation constant ?0, and (I).Type: ApplicationFiled: November 7, 2019Publication date: January 27, 2022Inventors: Rostislav Radiyevich Khrapko, Sukru Ekin Kocabas, Robert Adam Modavis, Daniel Aloysius Nolan, Jun Yang
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Patent number: 11137538Abstract: A multicore optical fiber that includes a plurality of waveguiding cores disposed in a cladding. The plurality of cores are situated adjacent to at least one other core with a core center to core center spacing being not larger than 10 times the radius of the average core, such that the greater than 10% of the light will couple from one core to the adjacent core over a propagating distance of 1 cm, along the fiber length so as to provide coupling between the adjacent cores and to enable quantum walk. The plurality waveguiding cores are disposed in the cladding in a ring distribution or at least a portion of the ring distribution.Type: GrantFiled: September 28, 2020Date of Patent: October 5, 2021Assignee: Corning IncorporatedInventors: Nicholas Francis Borrelli, Rostislav Radiyevich Khrapko, Dan Trung Nguyen, Thien An Thi Nguyen, Daniel Aloysius Nolan
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Patent number: 11137539Abstract: A multicore optical fiber that includes a plurality of waveguiding cores disposed in a cladding. The plurality of waveguiding cores include one or more first waveguiding cores that have a first propagation constant and one or more second waveguiding cores that have a second propagation constant, where the first propagation constant differs from the second propagation constant. The one or more first waveguiding cores and the one or more second waveguiding cores are disposed in the cladding in a ring distribution and at least a portion of the ring distribution is arranged based on a quasi-periodic sequence having a plurality of sequence segments. Each sequence segment is determined based on a quasi-periodic function, has an order, and corresponds to an arrangement segment of a first waveguiding cores, a second waveguiding cores, or combinations thereof. The ring distribution includes at least one arrangement segment corresponding with a third-order sequence segment or higher of the quasi-periodic sequence.Type: GrantFiled: September 28, 2020Date of Patent: October 5, 2021Assignee: Corning IncorporatedInventors: Nicholas Francis Borrelli, Rostislav Radiyevich Khrapko, Dan Trung Nguyen, Thien An Thi Nguyen, Daniel Aloysius Nolan
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Publication number: 20210103089Abstract: A multicore optical fiber that includes a plurality of waveguiding cores disposed in a cladding. The plurality of cores are situated adjacent to at least one other core with a core center to core center spacing being not larger than 10 times the radius of the average core, such that the greater than 10% of the light will couple from one core to the adjacent core over a propagating distance of 1 cm, along the fiber length so as to provide coupling between the adjacent cores and to enable quantum walk. The plurality waveguiding cores are disposed in the cladding in a ring distribution or at least a portion of the ring distribution.Type: ApplicationFiled: September 28, 2020Publication date: April 8, 2021Inventors: Nicholas Francis Borrelli, Rostislav Radiyevich Khrapko, Dan Trung Nguyen, Thien An Thi Nguyen, Daniel Aloysius Nolan
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Publication number: 20210103090Abstract: A multicore optical fiber that includes a plurality of waveguiding cores disposed in a cladding. The plurality of waveguiding cores include one or more first waveguiding cores that have a first propagation constant and one or more second waveguiding cores that have a second propagation constant, where the first propagation constant differs from the second propagation constant. The one or more first waveguiding cores and the one or more second waveguiding cores are disposed in the cladding in a ring distribution and at least a portion of the ring distribution is arranged based on a quasi-periodic sequence having a plurality of sequence segments. Each sequence segment is determined based on a quasi-periodic function, has an order, and corresponds to an arrangement segment of a first waveguiding cores, a second waveguiding cores, or combinations thereof. The ring distribution includes at least one arrangement segment corresponding with a third-order sequence segment or higher of the quasi-periodic sequence.Type: ApplicationFiled: September 28, 2020Publication date: April 8, 2021Inventors: Nicholas Francis Borrelli, Rostislav Radiyevich Khrapko, Dan Trung Nguyen, Thien An Thi Nguyen, Daniel Aloysius Nolan
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Publication number: 20200277219Abstract: The vacuum-based methods of forming an optical fiber preform include applying a vacuum to a preform assembly. The preform assembly has at least one glass cladding section with one or more axial through holes, with one or more canes respectively residing in the one or more axial through holes. The opposite ends of the at least one glass cladding section are capped to define a substantially sealed internal chamber. A vacuum is applied to the substantially sealed internal chamber to define a vacuum-held preform assembly. The methods also include heating the vacuum-held preform assembly to just above the glass softening point to consolidate the vacuum-held preform to form the cane-based glass preform. An optical fiber is formed by drawing the cane-based glass preform. The same furnace used to consolidate the vacuum-held preform can be used to draw the optical fiber.Type: ApplicationFiled: February 14, 2020Publication date: September 3, 2020Inventor: Rostislav Radiyevich Khrapko
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Patent number: 9983376Abstract: High-data-rate interconnect cables are disclosed, wherein electrical data signals are transmitted in a conductor assembly made of a thin metal layer surrounding a cylindrical support member. The cylindrical support member can be a high-resistivity conductor or a dielectric, such as a glass optical waveguide that supports the transmission of optical signals. The cylindrical support member can also be a core conductor that supports the transmission of electrical power and low-frequency auxiliary signals. The high-data-rate interconnect cables are self-equalizing, so that a data link transmission system that employs the high-data-rate interconnect cable does not require active equalization.Type: GrantFiled: April 18, 2016Date of Patent: May 29, 2018Assignee: Corning Optical Communications LLCInventors: Mathieu Charbonneau-Lefort, Rostislav Radiyevich Khrapko, William Richard Trutna, Richard Clayton Walker
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Patent number: 9676658Abstract: One embodiment of the disclosure relates to a method of making an optical fiber comprising the steps of: (i) exposing a silica based preform with at least one porous glass region having soot density of ? to a gas mixture comprising SiCl4 having SiCl4 mole fraction ySiCl4 at a doping temperature Tdop such that parameter X is larger than 0.03 to form the chlorine treated preform, wherein X = 1 1 + [ ( ? ? s - ? ) ? 0.209748 ? ? T dop ? Exp ? [ - 5435.33 / T dop ] y SiCl ? ? 4 3 / 4 ] and ?s is the density of the fully densified soot layer; and (ii) exposing the chlorine treated preform to temperatures above 1400° C. to completely sinter the preform to produce sintered optical fiber preform with a chlorine doped region; and (iii) drawing an optical fiber from the sintered optical preform.Type: GrantFiled: February 15, 2016Date of Patent: June 13, 2017Assignee: Corning IncorporatedInventors: Brian Lee Harper, Rostislav Radiyevich Khrapko, Snigdharaj Kumar Mishra, Sonya Marie Raney, Pushkar Tandon
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Publication number: 20160314876Abstract: High-data-rate interconnect cables are disclosed, wherein electrical data signals are transmitted in a conductor assembly made of a thin metal layer surrounding a cylindrical support member. The cylindrical support member can be a high-resistivity conductor or a dielectric, such as a glass optical waveguide that supports the transmission of optical signals. The cylindrical support member can also be a core conductor that supports the transmission of electrical power and low-frequency auxiliary signals. The high-data-rate interconnect cables are self-equalizing, so that a data link transmission system that employs the high-data-rate interconnect cable does not require active equalization.Type: ApplicationFiled: April 18, 2016Publication date: October 27, 2016Inventors: Mathieu Charbonneau-Lefort, Rostislav Radiyevich Khrapko, William Richard Trutna, Richard Clayton Walker
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Publication number: 20160152510Abstract: One embodiment of the disclosure relates to a method of making an optical fiber comprising the steps of: (i) exposing a silica based preform with at least one porous glass region having soot density of ? to a gas mixture comprising SiCl4 having SiCl4 mole fraction ySiCl4 at a doping temperature Tdop such that parameter X is larger than 0.03 to form the chlorine treated preform, wherein X = 1 1 + [ ( ? ? s - ? ) ? 0.209748 ? ? T dop ? Exp ? [ - 5435.33 / T dop ] y SiCl ? ? 4 3 / 4 ] and ?s is the density of the fully densified soot layer; and (ii) exposing the chlorine treated preform to temperatures above 1400° C. to completely sinter the preform to produce sintered optical fiber preform with a chlorine doped region; and (iii) drawing an optical fiber from the sintered optical preform.Type: ApplicationFiled: February 15, 2016Publication date: June 2, 2016Inventors: Brian Lee Harper, Rostislav Radiyevich Khrapko, Snigdharaj Kumar Mishra, Sonya Marie Raney, Pushkar Tandon