Patents by Inventor Anis Zribi
Anis Zribi 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: 7595882Abstract: Embodiments of the invention include a system for sensing homonuclear diatomic molecules, such as, for example, nitrogen. Other embodiments include a method for sensing homonuclear diatomic molecules. The system may include a light source, a hollow-core wave-guiding device that exhibits a low attenuation at predetermined operating optical frequencies and is in optical communication with the light source, a gas introduction system for introducing a gaseous medium between the light source and the hollow-core wave-guiding device, and a detector in optical communication with the hollow-core wave-guiding device.Type: GrantFiled: April 14, 2008Date of Patent: September 29, 2009Assignee: Geneal Electric CompanyInventors: Rui Chen, Marko Klaus Baller, Peter Joseph Codella, Anis Zribi, Renato Guida, Alexey Vasily Vert, Radislav Alexandrovich Potyrailo, Xiaoyong Liu, Zhiyong Wang
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Patent number: 7586603Abstract: A method of Raman detection for a portable, integrated spectrometer instrument includes directing Raman scattered photons by a sample to an avalanche photodiode (APD), the APD configured to generate an output signal responsive to the intensity of the Raman scattered photons incident thereon. The output signal of the APD is amplified and passed through a discriminator so as to reject at least one or more of amplifier noise and dark noise. A number of discrete output pulses within a set operational range of the discriminator is counted so as to determine a number of photons detected by the APD.Type: GrantFiled: April 17, 2008Date of Patent: September 8, 2009Assignee: General Electric CompanyInventors: Sandip Maity, Ayan Banerjee, Anis Zribi, Stacey Kennerly, Long Que, Glenn Claydon, Shankar Chandrasekaran, Shivappa Goravar
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Patent number: 7586602Abstract: A method of Raman detection for a portable, integrated spectrometer instrument includes directing Raman scattered photons by a sample to an avalanche photodiode (APD), the APD configured to generate an output signal responsive to the intensity of the Raman scattered photons incident thereon. The output signal of the APD is amplified and passed through a discriminator so as to reject at least one or more of amplifier noise and dark noise. A number of discrete output pulses within a set operational range of the discriminator is counted so as to determine a number of photons detected by the APD.Type: GrantFiled: July 24, 2006Date of Patent: September 8, 2009Assignee: General Electric CompanyInventors: Sandip Maity, Ayan Banerjee, Anis Zribi, Stacey Kennerly, Long Que, Glenn Claydon, Shankar Chandrasekaran, Shivappa Goravar
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Publication number: 20090201497Abstract: An optofluidic device is provided. The device includes a cladding region having a first refractive index, and a channel defined by the cladding region such that the cladding region forms an inner surface or an interface of the channel. The channel is configured to house one or more of a liquid, a solid, a gas, a colloidal, or a suspension sample, wherein the sample has a second refractive index, where the channel is configured to guide radiation, and where the first refractive index is lower than the second refractive index.Type: ApplicationFiled: April 10, 2006Publication date: August 13, 2009Inventors: Anis Zribi, Wei-Cheng Tian, Yuan-Hsiang Lee, Min-Yi Shih
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Patent number: 7573578Abstract: According to one embodiment, a micro-electrical mechanical system apparatus includes first and second mirrors that define a cavity. Moreover, a photonic band-gap structure coats a surface of at least one of the first or second mirrors to improve reflectivity. Another embodiment includes a third mirror, wherein the second and third mirrors form a second cavity. The spaces between the mirrors might comprise, for example, a pair of Fabry-Perot filter cavities for a spectrometer.Type: GrantFiled: August 10, 2006Date of Patent: August 11, 2009Assignee: GE Homeland Protection, Inc.Inventors: Anis Zribi, Glenn S. Claydon, David C. Hays, Stacey Kennerly, Long Que, Shankar Chandrasekaran, Shivappa Goravar, Ayan Banerjee
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Patent number: 7574089Abstract: An optofluidic device is provided. The device includes a cladding region having a first refractive index, and a channel defined by the cladding region such that the cladding region forms an inner surface or an interface of the channel. The channel is configured to house one or more of a liquid, a solid, a gas, a colloidal, or a suspension sample, wherein the sample has a second refractive index, where the channel is configured to guide radiation, and where the first refractive index is lower than the second refractive index.Type: GrantFiled: April 10, 2006Date of Patent: August 11, 2009Assignee: GE Homeland Protection, Inc.Inventors: Anis Zribi, Wei-Cheng Tian, Yuan-Hsiang Lee, Min-Yi Shih
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Patent number: 7551287Abstract: According to one embodiment, a micro-electrical mechanical system apparatus includes a bi-stable actuator and at least one movable Fabry-Perot filter cavity mirror coupled to the bi-stable actuator. The bi-stable actuator may be associated with a first latched position and a second latched position and may comprise, for example, a thermal device, an electrostatic device (e.g., a parallel plate or comb drive), or a magnetic device. According to some embodiments, a relationship between a voltage applied to an actuator of a Fabry-Perot filter and an amount of displacement associated with a movable mirror is substantially linear.Type: GrantFiled: August 10, 2006Date of Patent: June 23, 2009Assignee: GE Homeland Protection, Inc.Inventors: Anis Zribi, Glenn S. Claydon, David C. Hays, Stacey Kennerly, Long Que, Shankar Chandrasekaran, Shivappa Goravar, Ayan Banerjec
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Patent number: 7547953Abstract: Gallium oxide films for sensing gas comprise Ga2O3 and have a porosity of at least about 30%. Such films can be formed by coating a substrate with a solution comprising: a gallium salt and a porogen comprising an organic compound comprising a hydrophilic chain and a hydrophobic chain; and heating the substrate to a temperature in the range from about 400° C. to about 600° C. while exposing the substrate to an oxygen-containing source to convert the gallium salt to a gallium oxide.Type: GrantFiled: January 29, 2007Date of Patent: June 16, 2009Assignee: General Electric CompanyInventors: Anthony Yu-Chung Ku, Steven Alfred Tysoe, Vinayak Tilak, Peter Micah Sandvik, Sergio Paulo Martins Loureiro, James Anthony Ruud, Anis Zribi, Wei-Cheng Tian
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Patent number: 7508189Abstract: A micro-electromechanical system current and magnetic field sensor is presented. The micro-electromechanical system current and magnetic field sensor is configured to sense a magnetic field produced by a current carrying conductor. The sensor includes a structural component comprising a substrate and a compliant layer, a magnetic-to-mechanical converter coupled to the structural component to provide a mechanical indication of the magnetic field. The sensor further includes a strain responsive component coupled to the structural component to sense the mechanical indication and to provide an indication of the current in the current carrying conductor in response thereto.Type: GrantFiled: April 11, 2007Date of Patent: March 24, 2009Assignee: General Electric CompanyInventors: Ertugrul Berkcan, Shankar Chandrasekaran, Christopher James Kapusta, Laura Jean Meyer, Glenn Scott Claydon, Debbie Gahaton Jones, Anis Zribi
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Patent number: 7505128Abstract: An integrated spectrometer instrument, including an optical source formed on a chip, the optical source configured to generate an incident optical beam upon a sample to be measured. Collection optics formed on the chip are configured to receive a scattered optical beam from the sample, and filtering optics formed on the chip are configured to remove elastically scattered light from the scattered optical beam at a wavelength corresponding to the optical source. A tunable filter formed on the chip is configured to pass selected wavelengths of the scattered optical beam, and a photo detector device formed on the chip is configured to generate an output signal corresponding to the intensity of photons passed through the tunable filter.Type: GrantFiled: April 10, 2006Date of Patent: March 17, 2009Assignee: General Electric CompanyInventors: Anis Zribi, Stacey Joy Kennerly, Glenn Scott Claydon, Long Que, Ayan Banerjee, Shankar Chandrasekaran, Shivappa Ningappa Goravar, David Cecil Hays
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Patent number: 7495430Abstract: A micro-electromechanical system (MEMS) current sensor is described as including a first conductor, a magnetic field shaping component for shaping a magnetic field produced by a current in the first conductor, and a MEMS-based magnetic field sensing component including a magneto-MEMS component for sensing the shaped magnetic field and, in response thereto, providing an indication of the current in the first conductor. A method for sensing a current using MEMS is also described as including shaping a magnetic field produced with a current in a first conductor, sensing the shaped magnetic field with a MEMS-based magnetic field sensing component having a magneto-MEMS component magnetic field sensing circuit, and providing an indication of the current in the first conductor.Type: GrantFiled: August 18, 2006Date of Patent: February 24, 2009Assignee: General Electric CompanyInventors: Ertugrul Berkcan, Christopher James Kapusta, Glenn Scott Claydon, Anis Zribi, Laura Jean Meyer, Wei-Cheng Tian
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Patent number: 7466121Abstract: A micro-electromechanical system (MEMS) current sensor is described as including a first conductor, a magnetic field shaping component for shaping a magnetic field produced by a current in the first conductor, and a MEMS-based magnetic field sensing component including a magneto-MEMS component for sensing the shaped magnetic field and, in response thereto, providing an indication of the current in the first conductor. A method for sensing a current using MEMS is also described as including shaping a magnetic field produced with a current in a first conductor, sensing the shaped magnetic field with a MEMS-based magnetic field sensing component having a magneto-MEMS component magnetic field sensing circuit, and providing an indication of the current in the first conductor.Type: GrantFiled: August 18, 2006Date of Patent: December 16, 2008Assignee: General Electric CompanyInventors: Ertugrul Berkcan, Christopher James Kapusta, Glenn Scott Claydon, Anis Zribi, Laura Jean Meyer, Wei-Cheng Tian
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Publication number: 20080239306Abstract: A system and method for managing optical power for controlling thermal alteration of a sample undergoing spectroscopic analysis is provided. The system includes a moveable laser beam generator for irradiating the sample and a beam shaping device for moving and shaping the laser beam to prevent thermal overload or build up in the sample. The moveable laser beam generator includes at least one beam shaping device selected from the group consisting of at least one optical lens, at least one optical diffractor, at least one optical path difference modulator, at least one moveable mirror, at least one Micro-Electro-Mechanical Systems (MEMS) integrated circuit (IC), and/or a liquid droplet. The system also includes an at least two degree of freedom (2 DOF) moveable substrate platform and a controller for controlling the laser beam generator and the substrate platform, and for analyzing light reflected from the sample.Type: ApplicationFiled: March 29, 2007Publication date: October 2, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: William Scott Sutherland, Anis Zribi, Long Que, Glenn Scott Claydon, Stacey Joy Kennerly, Ayan Banerjee, Shivappa Ningappa Goravar, Shankar Chandrasekaran, David Cecil Hays, Victor Samper, Dirk Lange, Marko Baller, Min-Yi Shih, Sandip Maity
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Patent number: 7428055Abstract: A interferometer-based fouling detection system and method are described. The system may include a fiber optic cable, a light source in communication with the fiber optic cable, at least one photo detector in communication with the fiber optic cable, and at least one interferometric spectrometer. The fiber optic cable may include a long period grating and a fiber Bragg grating or it may include a facet edge. The system may instead include a fiber optic cable, a light source in communication with the fiber optic cable, at least one photo detector in communication with the fiber optic cable, a fiber coupler, a reference probe including a mirror, a sample probe, and an interferometer.Type: GrantFiled: October 5, 2006Date of Patent: September 23, 2008Assignee: General Electric CompanyInventors: Anis Zribi, Min-Yi Shih, Guiju Song, Ajit Achuthan, Glenn Scott Claydon, Stacey Joy Kennerly, Kuna Venkat Satya Rama Kishore, Jianming Zheng, Kevin George Harding, Hua Xia
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Publication number: 20080204743Abstract: A method of Raman detection for a portable, integrated spectrometer instrument includes directing Raman scattered photons by a sample to an avalanche photodiode (APD), the APD configured to generate an output signal responsive to the intensity of the Raman scattered photons incident thereon. The output signal of the APD is amplified and passed through a discriminator so as to reject at least one or more of amplifier noise and dark noise. A number of discrete output pulses within a set operational range of the discriminator is counted so as to determine a number of photons detected by the APD.Type: ApplicationFiled: April 17, 2008Publication date: August 28, 2008Applicant: General Electric CompanyInventors: Sandip Maity, Ayan Banerjee, Anis Zribi, Stacey Kennerly, Long Que, Glenn Claydon, Shankar Chandrasekaran, Shivappa Goravar
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Patent number: 7411670Abstract: A photonic crystal based collection probe is provided. The probe includes a photonic crystal configured to guide and condition a beam of Raman scattered photons. Further, the device includes a spectrograph in optical communication with the photonic crystal and configured to receive Raman scattering from the photonic crystal. The device may be employed in a Raman spectrometer system.Type: GrantFiled: April 10, 2006Date of Patent: August 12, 2008Assignee: GE Homeland Protection, Inc.Inventors: Anis Zribi, Ayan Banerjee, Shivappa Ningappa Goravar, Shankar (nmn) Chandrasekaran, Sandip Maity, Glenn Scott Claydon, Stacey Joy Kennerly, Todd Ryan Tolliver, David Cecil Hays, Sheila Neumann Tandon, Long Que, Christopher Fred Keimel
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Publication number: 20080180209Abstract: Gallium oxide films for sensing gas comprise Ga2O3 and have a porosity of at least about 30%. Such films can be formed by coating a substrate with a solution comprising: a gallium salt and a porogen comprising an organic compound comprising a hydrophilic chain and a hydrophobic chain; and heating the substrate to a temperature in the range from about 400° C. to about 600° C. while exposing the substrate to an oxygen-containing source to convert the gallium salt to a gallium oxide.Type: ApplicationFiled: January 29, 2007Publication date: July 31, 2008Inventors: Anthony Yu-Chung Ku, Steven Alfred Tysoe, Vinayak Tilak, Peter Micah Sandvik, Sergio Paulo Martins Loureiro, James Anthony Ruud, Anis Zribi, Wei-Cheng Tian
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Publication number: 20080158568Abstract: An interferometer includes a resonant cavity having a movable mirror and at least one fiber optic component acting as a fixed mirror. A surface of the fiber optic component is coated with a reflective film. An actuator is coupled to the movable mirror, such that when a scattered optical beam is coupled to the cavity, interference occurs between the surface of the fiber optic component coated with reflective film and a surface of the movable mirror facing the surface of the fiber optic component coated with reflective film. The reflective film on the surface of the fiber optic component causes closely spaced spectral lines within the scattered optical beam to be suitably resolved.Type: ApplicationFiled: March 7, 2008Publication date: July 3, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: Glenn Scott Claydon, Ayan Banerjee, Shivappa Ningappa Goravar, Renato Guida, David Cecil Hays, Dirk Lange, Boon Kwee Lee, Sandip Maity, Long Que, Anis Zribi
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Publication number: 20080122431Abstract: A micro-electromechanical system (MEMS) based current & magnetic field sensor includes a MEMS-based magnetic field sensing component a structural component comprising a silicon substrate and a compliant layer comprising a material selected from the group consisting of silicon dioxide and silicon nitride, a magnetic-to-mechanical converter coupled to the structural component to provide a mechanical indication of the magnetic field, and a strain responsive component coupled to the structural component to sense the mechanical indication and to provide an indication of the current in the current carrying conductor in response thereto.Type: ApplicationFiled: April 11, 2007Publication date: May 29, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: ERTUGRUL BERKCAN, SHANKAR CHANDRASEKARAN, CHRISTOPHER JAMES KAPUSTA, LAURA JEAN MEYER, GLENN SCOTT CLAYDON, DEBBIE GAHATON JONES, ANIS ZRIBI
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Publication number: 20080084565Abstract: A interferometer-based fouling detection system and method are described. The system may include a fiber optic cable, a light source in communication with the fiber optic cable, at least one photo detector in communication with the fiber optic cable, and at least one interferometric spectrometer. The fiber optic cable may include a long period grating and a fiber Bragg grating or it may include a facet edge. The system may instead include a fiber optic cable, a light source in communication with the fiber optic cable, at least one photo detector in communication with the fiber optic cable, a fiber coupler, a reference probe including a mirror, a sample probe, and an interferometer.Type: ApplicationFiled: October 5, 2006Publication date: April 10, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: Anis Zribi, Min-Yi Shih, Guiju Song, Ajit Achuthan, Glenn Scott Claydon, Stacey Joy Kennerly, Kuna Venkat Satya Rama Kishore, Jianming Zheng, Kevin George Harding, Hua Xia