Patents by Inventor Peng Kevin Chen
Peng Kevin Chen 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: 11467338Abstract: A method of making an optical fiber sensor device for distributed sensing includes generating a laser beam comprising a plurality of ultrafast pulses, and focusing the laser beam into a core of an optical fiber to form a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to a longitudinal axis of optical fiber. Also, an optical fiber sensor device for distributed sensing includes an optical fiber having a longitudinal axis, a core, and a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to the longitudinal axis of the optical fiber. Also, a distributed sensing method and system and an energy production system that employs such an optical fiber sensor device.Type: GrantFiled: March 3, 2020Date of Patent: October 11, 2022Assignee: University of Pittsburgh-Of the Commonwealth System of Higher EducationInventors: Peng Kevin Chen, Aidong Yan, Michael P. Buric, Paul R. Ohodnicki, Sheng Huang
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Patent number: 10902976Abstract: A cable device includes a sheath member, a number of electrical cables provided within the sheath member, and an optical fiber sensing member provided within the sheath member. The optical fiber sensing member includes a functionalized optical fiber based sensor device structured to exhibit a change in one or more optical properties in response to changes in a parameter of interest. Also, a method of sensing radiation includes introducing a source light into an optical fiber sensing member provided within a structure, wherein the optical fiber sensing member comprises a functionalized optical fiber based sensor device structured to exhibit a change in one or more optical properties in response to radiation, detecting sensing light generated in response to the source light, and determining a radiation level at a plurality of locations within the structure using the detected sensing light and a distributed sensing scheme.Type: GrantFiled: March 20, 2017Date of Patent: January 26, 2021Assignee: University of Pittsburgh—Of the Commonwealth System of Higher EducationInventors: Peng Kevin Chen, Mohamed A. Bayoumy, Aidong Yan, Rongzhang Chen
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Patent number: 10811835Abstract: A laser frame for holding a plurality of optical components includes a first flexure structure for adjustably holding a first one of the optical components, and a first cellular structure for supporting and cooling a second one of the optical components. The first flexure structure and the first cellular structure are each a unitary structure formed by additive manufacturing. Also, a laser frame for holding an optical component includes a passive cooling cellular structure for supporting and cooling the optical component. The passive cooling cellular structure has a non-uniform density, and the laser frame is a unitary structure formed by additive manufacturing.Type: GrantFiled: February 15, 2018Date of Patent: October 20, 2020Assignee: University of Pittsburgh-Of the Commonwealth System of Higher EducationInventors: Peng Kevin Chen, Shuo Li, Albert Chi Fu To
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Publication number: 20200313379Abstract: A laser frame for holding a plurality of optical components includes a first flexure structure for adjustably holding a first one of the optical components, and a first cellular structure for supporting and cooling a second one of the optical components. The first flexure structure and the first cellular structure are each a unitary structure formed by additive manufacturing. Also, a laser frame for holding an optical component includes a passive cooling cellular structure for supporting and cooling the optical component. The passive cooling cellular structure has a non-uniform density, and the laser frame is a unitary structure formed by additive manufacturing.Type: ApplicationFiled: June 12, 2020Publication date: October 1, 2020Applicant: University of Pittsburgh - Of the Commonwealth System of Higher EducationInventors: PENG KEVIN CHEN, SHUO LI, ALBERT CHI FU TO
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Publication number: 20200200968Abstract: A method of making an optical fiber sensor device for distributed sensing includes generating a laser beam comprising a plurality of ultrafast pulses, and focusing the laser beam into a core of an optical fiber to form a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to a longitudinal axis of optical fiber. Also, an optical fiber sensor device for distributed sensing includes an optical fiber having a longitudinal axis, a core, and a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to the longitudinal axis of the optical fiber. Also, a distributed sensing method and system and an energy production system that employs such an optical fiber sensor device.Type: ApplicationFiled: March 3, 2020Publication date: June 25, 2020Applicant: University of Pittsburgh - Of the Commonwealth System of Higher EducationInventors: PENG KEVIN CHEN, AIDONG YAN, MICHAEL P. BURIC, PAUL R. OHODNICKI, SHENG HUANG
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Patent number: 10670802Abstract: A method of making an optical fiber sensor device for distributed sensing includes generating a laser beam comprising a plurality of ultrafast pulses, and focusing the laser beam into a core of an optical fiber to form a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to a longitudinal axis of optical fiber. Also, an optical fiber sensor device for distributed sensing includes an optical fiber having a longitudinal axis, a core, and a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to the longitudinal axis of the optical fiber. Also, a distributed sensing method and system and an energy production system that employs such an optical fiber sensor device.Type: GrantFiled: August 30, 2018Date of Patent: June 2, 2020Assignee: University of Pittsburgh—Of the Commonwealth System of Higher EducationInventors: Peng Kevin Chen, Aidong Yan, Michael P. Buric, Paul R. Ohodnicki, Sheng Huang
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Patent number: 10595712Abstract: A lightguide is configured to transmit a scanned and/or focused processing beam to a target. The processing beam has a wavefront amplitude and phase set by a spatial light modulator. Suitable wavefront characteristics are obtained based on portions of the processing beam returned to a detector through the lightguide. A beam path can be detected at a first, reduced power, and processing along the beam path performed at a second, higher optical power.Type: GrantFiled: October 21, 2014Date of Patent: March 24, 2020Assignee: University of Pittsburgh—Of the Commonwealth System of Higher EducationInventors: Peng Kevin Chen, Tatum Varut Tarin, Bryan L. Nelsen, Botao Zhang
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Publication number: 20190080822Abstract: A cable device includes a sheath member, a number of electrical cables provided within the sheath member, and an optical fiber sensing member provided within the sheath member. The optical fiber sensing member includes a ftmctionalized optical fiber based sensor device structured to exhibit a change in one or more optical properties in response to changes in a parameter of interest. Also, a method of sensing radiation includes introducing a source light into an optical fiber sensing member provided within a structure, wherein the optical fiber sensing member comprises a functionalized optical fiber based sensor device structured to exhibit a change in one or more optical properties in response to radiation, detecting sensing light generated in response to the source light, and determining a radiation level at a plurality of locations within the structure using the detected sensing light and a distributed sensing scheme.Type: ApplicationFiled: March 20, 2017Publication date: March 14, 2019Applicant: UNIVERSITY OF PITTSBURGH-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATIONInventors: PENG KEVIN CHEN, MOHAMED A. BAYOUMY, AIDONG YAN, RONGZHANG CHEN
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Publication number: 20190064432Abstract: A method of making an optical fiber sensor device for distributed sensing includes generating a laser beam comprising a plurality of ultrafast pulses, and focusing the laser beam into a core of an optical fiber to form a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to a longitudinal axis of optical fiber. Also, an optical fiber sensor device for distributed sensing includes an optical fiber having a longitudinal axis, a core, and a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to the longitudinal axis of the optical fiber. Also, a distributed sensing method and system and an energy production system that employs such an optical fiber sensor device.Type: ApplicationFiled: August 30, 2018Publication date: February 28, 2019Applicant: University of Pittsburgh - Of the Commonwealth System of Higher EducationInventors: PENG KEVIN CHEN, AIDONG YAN, MICHAEL P. BURIC, PAUL R. OHODNICKI, SHENG HUANG
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Publication number: 20180233873Abstract: A laser frame for holding a plurality of optical components includes a first flexure structure for adjustably holding a first one of the optical components, and a first cellular structure for supporting and cooling a second one of the optical components. The first flexure structure and the first cellular structure are each a unitary structure formed by additive manufacturing. Also, a laser frame for holding an optical component includes a passive cooling cellular structure for supporting and cooling the optical component. The passive cooling cellular structure has a non-uniform density, and the laser frame is a unitary structure formed by additive manufacturing.Type: ApplicationFiled: February 15, 2018Publication date: August 16, 2018Applicant: University of Pittsburgh - Of the Commonwealth System of Higher EducationInventors: PENG KEVIN CHEN, SHUO LI, ALBERT CHI FU TO
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Publication number: 20150112144Abstract: A lightguide is configured to transmit a scanned and/or focused processing beam to a target. The processing beam has a wavefront amplitude and phase set by a spatial light modulator. Suitable wavefront characteristics are obtained based on portions of the processing beam returned to a detector through the lightguide. A beam path can be detected at a first, reduced power, and processing along the beam path performed at a second, higher optical power.Type: ApplicationFiled: October 21, 2014Publication date: April 23, 2015Applicant: University of Pittsburgh - Of the Commonwealth System of Higher EducationInventors: Peng Kevin Chen, Tatum Varut Tarin, Bryan L. Nelsen
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Patent number: 8674306Abstract: A gas detection system includes a light detector, a pump laser with spectral emission between UV and IR wavelengths and structured to generate a laser beam, a hollow waveguide structured to receive a sample gas, the hollow waveguide having a bandwidth sufficient to transmit the laser beam and Stokes Raman photons scattered by the sample gas, and an optical system. The optical system is structured to: (i) direct the laser beam into the hollow waveguide such that it propagates in the hollow waveguide in one or more low-order low-loss waveguide modes, and (ii) direct Raman signals generated within the hollow waveguide in response to the laser beam interacting with the sample gas toward the light detector, the Raman signal including the Stokes Raman photons.Type: GrantFiled: November 21, 2011Date of Patent: March 18, 2014Assignee: University of Pittsburgh—Of the Commonwealth System of Higher EducationInventors: Joel Falk, Peng Kevin Chen, Michael Paul Buric, Steven D. Woodruff
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Publication number: 20120176600Abstract: A gas detection system includes a light detector, a pump laser with spectral emission between UV and IR wavelengths and structured to generate a laser beam, a hollow waveguide structured to receive a sample gas, the hollow waveguide having a bandwidth sufficient to transmit the laser beam and Stokes Raman photons scattered by the sample gas, and an optical system. The optical system is structured to: (i) direct the laser beam into the hollow waveguide such that it propagates in the hollow waveguide in one or more low-order low-loss waveguide modes, and (ii) direct Raman signals generated within the hollow waveguide in response to the laser beam interacting with the sample gas toward the light detector, the Raman signal including the Stokes Raman photons.Type: ApplicationFiled: November 21, 2011Publication date: July 12, 2012Inventors: Joel Falk, Peng Kevin Chen, Michael Paul Buric, Steven D. Woodruff