Patents by Inventor XinLi Jiang
XinLi Jiang 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: 10081567Abstract: A method for producing a depressed-cladding core rod of an ultra-low water peak optical fiber, the method including 1) producing a core rod component; 2) producing an inner cladding casing component; 3) disposing the core rod hollow shaft and the casing hollow shaft respectively in the glass lathe; 4) cutting off connections among a pressure controlling pipe, a scrubber, and a vacuum pump; 5) connecting the inner cladding casing to the core rod hollow shaft hermetically; 6) turning on the glass lathe; 7) transporting a first mixture gas to the core rod hollow shaft; 8) moving a high temperature heat source; 9) transporting a second mixture gas to the core rod hollow shaft; 10) transporting the first mixture gas to the core rod hollow shaft; 11) transporting the first mixture gas under certain conditions; and 12) controlling relevant parameters to fuse the inner cladding casing with the core layer rod.Type: GrantFiled: December 14, 2016Date of Patent: September 25, 2018Assignee: ZHONGTIAN TECHNOLOGY ADVANCED MATERIALS CO., LTD.Inventors: Xinli Jiang, Xikai Xu, Jinwen Chen, Hui Zhou, Benhua Qian
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Publication number: 20170096362Abstract: A method for producing a depressed-cladding core rod of an ultra-low water peak optical fiber, the method including 1) producing a core rod component; 2) producing an inner cladding casing component; 3) disposing the core rod hollow shaft and the casing hollow shaft respectively in the glass lathe; 4) cutting off connections among a pressure controlling pipe, a scrubber, and a vacuum pump; 5) connecting the inner cladding casing to the core rod hollow shaft hermetically; 6) turning on the glass lathe; 7) transporting a first mixture gas to the core rod hollow shaft; 8) moving a high temperature heat source; 9) transporting a second mixture gas to the core rod hollow shaft; 10) transporting the first mixture gas to the core rod hollow shaft; 11) transporting the first mixture gas under certain conditions; and 12) controlling relevant parameters to fuse the inner cladding casing with the core layer rod.Type: ApplicationFiled: December 14, 2016Publication date: April 6, 2017Inventors: Xinli JIANG, Xikai XU, Jinwen CHEN, Hui ZHOU, Benhua QIAN
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Patent number: 9568669Abstract: 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. Additional embodiments of the present invention describe an improved optical link when the inventive multimode fiber is connected to standard or conventional multimode fibers.Type: GrantFiled: October 4, 2011Date of Patent: February 14, 2017Assignee: OFS FITEL, LLCInventors: Xinli Jiang, Durgesh S. Vaidya, George E. Oulundsen
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Patent number: 9522838Abstract: An apparatus and a method for producing a depressed-cladding core rod of an ultra-low water peak optical fiber, the apparatus including a core rod component, an inner cladding casing component, a high temperature heat source, chucks, a rotary joint, an external gas pipe, and a pressure controlling pipe. The core rod component is produced by fusing and splicing a core layer rod and a first hollow shaft together. The inner cladding casing covers the outside of the core layer rod. The inner cladding casing component is produced by fusing and splicing an inner cladding casing and a second hollow shaft together. These two hollow shafts are clamped in two chucks of a glass lathe. A high temperature heat source is arranged outside the inner cladding casing.Type: GrantFiled: May 12, 2015Date of Patent: December 20, 2016Assignee: ZHONGTIAN TECHNOLOGY ADVANCED MATERIALS CO., LTD.Inventors: Xinli Jiang, Xikai Xu, Jinwen Chen, Hui Zhou, Benhua Qian
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Patent number: 9513189Abstract: Apparatus and method of simultaneously measuring a parameter of a plurality of cores in at least one optical fiber. An input tester at a first end of the test fiber has a plurality of tester signal inputs with a geometry substantially matching at least a portion of the core geometry of the fiber. At least one test input signal source coupled to the plurality of tester signal inputs. A signal measuring device is alignable at a second end of the fiber to measure the output of the test input signal. The input tester may include a tapered multicore coupler or a laser having a shield with apertures disposable between the laser and the fiber. In the latter case, a lens may be disposed between the shield and the fiber to project light from the laser that passes through the apertures onto the end of the fiber.Type: GrantFiled: November 8, 2013Date of Patent: December 6, 2016Assignee: OFS FITEL, LLCInventors: Xinli Jiang, Thierry F Taunay
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Publication number: 20150239768Abstract: An apparatus and a method for producing a depressed-cladding core rod of an ultra-low water peak optical fiber, the apparatus including a core rod component, an inner cladding casing component, a high temperature heat source, chucks, a rotary joint, an external gas pipe, and a pressure controlling pipe. The core rod component is produced by fusing and splicing a core layer rod and a first hollow shaft together. The inner cladding casing covers the outside of the core layer rod. The inner cladding casing component is produced by fusing and splicing an inner cladding casing and a second hollow shaft together. These two hollow shafts are clamped in two chucks of a glass lathe. A high temperature heat source is arranged outside the inner cladding casing.Type: ApplicationFiled: May 12, 2015Publication date: August 27, 2015Inventors: Xinli JIANG, Xikai XU, Jinwen CHEN, Hui ZHOU, Benhua QIAN
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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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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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Publication number: 20140125971Abstract: Apparatus and method of simultaneously measuring a parameter of a plurality of cores in at least one optical fiber. An input tester at a first end of the test fiber has a plurality of tester signal inputs with a geometry substantially matching at least a portion of the core geometry of the fiber. At least one test input signal source coupled to the plurality of tester signal inputs. A signal measuring device is alignable at a second end of the fiber to measure the output of the test input signal. The input tester may include a tapered multicore coupler or a laser having a shield with apertures disposable between the laser and the fiber. In the latter case, a lens may be disposed between the shield and the fiber to project light from the laser that passes through the apertures onto the end of the fiber.Type: ApplicationFiled: November 8, 2013Publication date: May 8, 2014Applicant: OFS Fitel, LLCInventors: Xinli Jiang, Thierry F. Taunay
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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: 20120183267Abstract: 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. Additional embodiments of the present invention describe an improved optical link when the inventive multimode fiber is connected to standard or conventional multimode fibers.Type: ApplicationFiled: October 4, 2011Publication date: July 19, 2012Inventors: Xinli Jiang, Durgesh S. Vaidya, George E. Oulundsen
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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: 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: 20100067858Abstract: 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: August 17, 2009Publication date: March 18, 2010Inventors: Jinkee Kim, George E. Oulundsen, Durgesh Shivram Vaidya, Man F. Yan, Xinli Jiang
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Patent number: 7043128Abstract: The specification describes a technique for drawing circular core multimode optical fiber using twist during draw to increase fiber bandwidth.Type: GrantFiled: February 25, 2004Date of Patent: May 9, 2006Assignee: Furukawa Electric North AmericaInventors: David John DiGiovanni, Frank Vincent DiMarcello, XinLi Jiang, George E. Oulundsen, Sandeep Prabhakar Pandit
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Publication number: 20040228590Abstract: The specification describes a technique for drawing circular core multimode optical fiber using twist during draw to increase fiber bandwidth.Type: ApplicationFiled: February 25, 2004Publication date: November 18, 2004Inventors: David John DiGiovanni, Frank Vincent DiMarcello, XinLi Jiang, George E. Oulundsen, Sandeep Prabhakar Pandit
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Patent number: 6735985Abstract: The specification describes a technique for drawing circular core multimode optical fiber using twist during draw to increase fiber bandwidth.Type: GrantFiled: December 20, 2001Date of Patent: May 18, 2004Assignee: Furukawa Electric North America IncInventors: David John DiGiovanni, Frank Vincent DiMarcello, XinLi Jiang, George E. Oulundsen, Sandeep Prabhakar Pandit
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Publication number: 20030128942Abstract: The specification describes a technique for drawing circular core multimode optical fiber using twist during draw to increase fiber bandwidth.Type: ApplicationFiled: December 20, 2001Publication date: July 10, 2003Inventors: David John DiGiovanni, Frank Vincent DiMarcello, XinLi Jiang, George E. Oulundsen, Sandeep Prabhakar Pandit