Patents by Inventor Mohammad Amin Tadayon
Mohammad Amin Tadayon 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: 11906368Abstract: A temperature measurement technology includes generating an input optical signal at a wavelength using an optical signal generator, splitting the input optical signal into a first beam and a second beam, optically transmitting the first beam through the first arm of an interferometer, transmitting the second beam through a second arm of the interferometer that introduces a phase shift in the second beam relative to the first beam, combining at least a portion of the transmitted first beam and the transmitted phase-shifted second beam to produce an output optical signal, measuring an optical signal intensity of the output optical signal, and correlating the measured optical signal intensity with a temperature to produce a measured temperature. Alternatively, the input optical signal may be transmitted through two or more interferometers.Type: GrantFiled: June 3, 2021Date of Patent: February 20, 2024Assignee: Fluke CorporationInventors: Mohammad Amin Tadayon, Kevin R. Williamson
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Patent number: 11815405Abstract: A photonic device has a substrate with one or more optical resonators having a first resonant frequency response relative to temperature and a different second resonant frequency response relative to temperature. A first waveguide optically couples a first light beam having a first frequency to a first optical resonator and a second waveguide optically couples a second light beam having a second frequency to a second optical resonator. An optical shifter may shift an optical characteristic of the second light beam. A detector converts output light from the photonic device into an electric signal having a characteristic indicative of a physical condition, such as temperature, of the photonic device. In some cases, output light from the one or more optical resonators is combined and a temperature of the photonic device is determined from a beat frequency in the combined light. One or more multimode optical resonators may be used.Type: GrantFiled: June 3, 2021Date of Patent: November 14, 2023Assignee: Fluke CorporationInventors: Mohammad Amin Tadayon, Kevin R. Williamson
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Patent number: 11815404Abstract: A system for determining a signature frequency of a photonic device includes a reference cell that receives a first light beam of a plurality of light beams. Based on a predetermined characteristic of the reference cell, the reference cell produces a first identifiable output indicative of a reference frequency in response to light in the first light beam having a particular frequency. A photonic device receives a second light beam of the plurality of light beams, and produces a second identifiable output in response to light in the second light beam having a frequency at the signature frequency. A computing device uses electrical signals representative of the first and second identifiable outputs to determine the signature frequency of the photonic device. A light source may emit a light beam having a controlled change of frequency and an optical splitter splits the light beam to produce the plurality of light beams.Type: GrantFiled: March 11, 2021Date of Patent: November 14, 2023Assignee: Fluke CorporationInventor: Mohammad Amin Tadayon
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Publication number: 20230304871Abstract: A temperature measurement system includes an optical resonator, a detector, and a computing subsystem. Light resonates in the optical resonator at resonant wavelengths that vary relative to a temperature in the optical resonator. The detector detects at least two resonant wavelengths of light output from the optical resonator. The computing subsystem determines the temperature of the optical resonator based at least in part on a mathematical operation on the at least two resonant wavelengths of the light output from the optical resonator. The mathematical operation may be a subtraction operation that determines a wavelength difference between two resonant wavelengths. In various implementations, the temperature of the optical resonator is determined based on a mapping of the wavelength difference to the temperature or based on an identified mode of the optical resonator and a mapping of the resonant wavelength to the temperature of the optical resonator in the mode.Type: ApplicationFiled: March 20, 2023Publication date: September 28, 2023Inventors: Mohammad Amin Tadayon, Robert B. Haines
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Publication number: 20220291056Abstract: A system for determining a signature frequency of a photonic device includes a reference cell that receives a first light beam of a plurality of light beams. Based on a predetermined characteristic of the reference cell, the reference cell produces a first identifiable output indicative of a reference frequency in response to light in the first light beam having a particular frequency. A photonic device receives a second light beam of the plurality of light beams, and produces a second identifiable output in response to light in the second light beam having a frequency at the signature frequency. A computing device uses electrical signals representative of the first and second identifiable outputs to determine the signature frequency of the photonic device. A light source may emit a light beam having a controlled change of frequency and an optical splitter splits the light beam to produce the plurality of light beams.Type: ApplicationFiled: March 11, 2021Publication date: September 15, 2022Inventor: Mohammad Amin Tadayon
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Publication number: 20210381908Abstract: A temperature measurement technology includes generating an input optical signal at a wavelength using an optical signal generator, splitting the input optical signal into a first beam and a second beam, optically transmitting the first beam through the first arm of an interferometer, transmitting the second beam through a second arm of the interferometer that introduces a phase shift in the second beam relative to the first beam, combining at least a portion of the transmitted first beam and the transmitted phase-shifted second beam to produce an output optical signal, measuring an optical signal intensity of the output optical signal, and correlating the measured optical signal intensity with a temperature to produce a measured temperature. Alternatively, the input optical signal may be transmitted through two or more interferometers.Type: ApplicationFiled: June 3, 2021Publication date: December 9, 2021Inventors: Mohammad Amin Tadayon, Kevin R. Williamson
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Publication number: 20210382254Abstract: Example methods, devices, and systems for optical transmission are disclosed. An example method can comprise coupling a plurality of optical filters to a substrate. The method can comprise coupling a polymeric waveguide to the plurality of optical filters. The polymeric waveguide can be configured to guide a free space optical signal along the polymeric waveguide and communicate, via the plurality of optical filters, one or more components of the free optical space signal to an integrated chip.Type: ApplicationFiled: November 23, 2020Publication date: December 9, 2021Inventors: Michal Lipson, Mohammad Amin Tadayon
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Publication number: 20210381906Abstract: A photonic device has a substrate with one or more optical resonators having a first resonant frequency response relative to temperature and a different second resonant frequency response relative to temperature. A first waveguide optically couples a first light beam having a first frequency to a first optical resonator and a second waveguide optically couples a second light beam having a second frequency to a second optical resonator. An optical shifter may shift an optical characteristic of the second light beam. A detector converts output light from the photonic device into an electric signal having a characteristic indicative of a physical condition, such as temperature, of the photonic device. In some cases, output light from the one or more optical resonators is combined and a temperature of the photonic device is determined from a beat frequency in the combined light. One or more multimode optical resonators may be used.Type: ApplicationFiled: June 3, 2021Publication date: December 9, 2021Inventors: Mohammad Amin Tadayon, Kevin R. Williamson
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Patent number: 11073659Abstract: A probe structure includes a monolithically integrated waveguide and lens. The probe is based on SU-8 as a guiding material. A waveguide mold is defined using wet etching of silicon using a silicon dioxide mask patterned with 45° angle with respect to the silicon substrate edge and an aluminum layer acting as a mirror is deposited on the silicon substrate. A lens mold is made using isotropic etching of the fused silica substrate and then aligned to the silicon substrate. A waveguide polymer such as SU-8 2025 is flowed into the waveguide mask+lens mold (both on the same substrate) by decreasing its viscosity and using capillary forces via careful temperature control of the substrate.Type: GrantFiled: May 13, 2020Date of Patent: July 27, 2021Assignee: The Trustees of Columbia University in the City of New YorkInventors: Michal Lipson, Mohammad Amin Tadayon, Aseema Mohanty, Felippe Barbosa
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Publication number: 20210191036Abstract: An optical apparatus comprises a waveguide and a plurality of optical components disposed in the waveguide. The optical components disposed in the waveguide direct light rays indicative of an image through at least a portion of the waveguide. The optical components can be configured to preserve a wave front of the represented image. In various embodiments, the optical elements are at least one of lenses, mirrors, and filters. Various methods of making and using the optical apparatus are disclosed herein.Type: ApplicationFiled: May 14, 2019Publication date: June 24, 2021Inventors: Michal LIPSON, Mohammad Amin TADAYON
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Publication number: 20210026071Abstract: A probe structure includes a monolithically integrated waveguide and lens. The probe is based on SU-8 as a guiding material. A waveguide mold is defined using wet etching of silicon using a silicon dioxide mask patterned with 45° angle with respect to the silicon substrate edge and an aluminum layer acting as a mirror is deposited on the silicon substrate. A lens mold is made using isotropic etching of the fused silica substrate and then aligned to the silicon substrate. A waveguide polymer such as SU-8 2025 is flowed into the waveguide mask+lens mold (both on the same substrate) by decreasing its viscosity and using capillary forces via careful temperature control of the substrate.Type: ApplicationFiled: May 13, 2020Publication date: January 28, 2021Inventors: Michal Lipson, Mohammad Amin Tadayon, Aseema Mohanty, Felippe Barbosa
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Patent number: 10890728Abstract: Example methods, devices, and systems for optical transmission are disclosed. An example method can comprise coupling a plurality of optical filters to a substrate. The method can comprise coupling a polymeric waveguide to the plurality of optical filters. The polymeric waveguide can be configured to guide a free space optical signal along the polymeric waveguide and communicate, via the plurality of optical filters, one or more components of the free optical space signal to an integrated chip.Type: GrantFiled: April 15, 2019Date of Patent: January 12, 2021Assignee: The Trustees of Columbia University in the City of New YorkInventors: Michal Lipson, Mohammad Amin Tadayon
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Patent number: 10746935Abstract: An optical coupling apparatus comprising a substrate having a trench formed therein, the trench having a width measured between two opposing walls that define a portion of the trench; and a waveguide disposed on or in the substrate, the waveguide having a width that tapers along an axis of light propagation.Type: GrantFiled: January 30, 2018Date of Patent: August 18, 2020Assignee: The Trustees of Columbia University in the City of New YorkInventors: Michal Lipson, You-Chia Chang, Oscar Adrian Jimenez Gordillo, Mohammad Amin Tadayon, Brian Stern
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Publication number: 20200225413Abstract: An optical coupling apparatus comprising a substrate having a trench formed therein, the trench having a width measured between two opposing walls that define a portion of the trench; and a waveguide disposed on or in the substrate, the waveguide having a width that tapers along an axis of light propagation.Type: ApplicationFiled: January 30, 2018Publication date: July 16, 2020Inventors: Michal Lipson, You-Chia Chang, Oscar Adrian Jimenez Gordillo, Mohammad Amin Tadayon, Brian Stern
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Patent number: 10690849Abstract: A probe structure includes a monolithically integrated waveguide and lens. The probe is based on SU-8 as a guiding material. A waveguide mold is defined using wet etching of silicon using a silicon dioxide mask patterned with 45° angle with respect to the silicon substrate edge and an aluminum layer acting as a mirror is deposited on the silicon substrate. A lens mold is made using isotropic etching of the fused silica substrate and then aligned to the silicon substrate. A waveguide polymer such as SU-8 2025 is flowed into the waveguide mask+lens mold (both on the same substrate) by decreasing its viscosity and using capillary forces via careful temperature control of the substrate.Type: GrantFiled: June 6, 2017Date of Patent: June 23, 2020Assignee: The Trustees of Columbia University in the City of New YorkInventors: Michal Lipson, Mohammad Amin Tadayon, Aseema Mohanty, Felippe Barbosa
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Publication number: 20190391415Abstract: Provided are devices that have a distal portion configured to be implanted in a brain of a subject. The distal portion includes one or more emitters configured to emit light in the visible spectrum. The device includes a proximal portion configured to be external to the brain of the subject while the distal portion is implanted, wherein the proximal portion includes at least one waveguide in optical communication with the one or more emitters. The at least one waveguide defines a cross-sectional width less than 500 nm. The at least one waveguide is optionally coupled to a heating element that is optionally configured to adjust a phase of light within the at least one waveguide.Type: ApplicationFiled: January 25, 2018Publication date: December 26, 2019Inventors: Michal LIPSON, Asemma MOHANTY, Mohammad Amin TADAYON, Adam KEPECS, Qian LI, Xingchen JI, Christine P. HENDON, Xinwen YAO
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Publication number: 20190319733Abstract: Example methods, devices, and systems for optical transmission are disclosed. An example method can comprise coupling a plurality of optical filters to a substrate. The method can comprise coupling a polymeric waveguide to the plurality of optical filters. The polymeric waveguide can be configured to guide a free space optical signal along the polymeric waveguide and communicate, via the plurality of optical filters, one or more components of the free optical space signal to an integrated chip.Type: ApplicationFiled: April 15, 2019Publication date: October 17, 2019Inventors: Michal Lipson, Mohammad Amin Tadayon
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Publication number: 20170351026Abstract: A probe structure includes a monolithically integrated waveguide and lens. The probe is based on SU-8 as a guiding material. A waveguide mold is defined using wet etching of silicon using a silicon dioxide mask patterned with 45° angle with respect to the silicon substrate edge and an aluminum layer acting as a mirror is deposited on the silicon substrate. A lens mold is made using isotropic etching of the fused silica substrate and then aligned to the silicon substrate. A waveguide polymer such as SU-8 2025 is flowed into the waveguide mask+lens mold (both on the same substrate) by decreasing its viscosity and using capillary forces via careful temperature control of the substrate.Type: ApplicationFiled: June 6, 2017Publication date: December 7, 2017Inventors: Michal Lipson, Mohammad Amin Tadayon, Aseema Mohanty, Felippe Barbosa