Patents by Inventor Behzad Moslehi
Behzad Moslehi 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).
-
Patent number: 11953389Abstract: An optical sensing system including an optical interrogator is operative with an array of reflective sensors, each sensor providing a separable reflected spectral response parameter such as a unique Gaussian standard deviation or reflected response compared to other sensors in the same operating wavelength range. The optical interrogator provides narrowband swept or broadband continuous optical power source to the array of FBG sensors, and an optical interrogator generates a g(x) representation of power vs wavelength of the reflected optical power and decomposes the representation into the wavelength of the individual sensors, thereby allowing operation of two or more FBG sensors in the same operating wavelength range.Type: GrantFiled: March 2, 2021Date of Patent: April 9, 2024Assignee: Intelligent Fiber Optic Systems CorporationInventors: Behzad Moslehi, Mehrdad Moslehi
-
Patent number: 11898919Abstract: A temperature correcting pressure gauge which has a diaphragm having at least one surface coupled to a source of pressure to be measured, the diaphragm first surface having a first FBG from a first optical fiber attached in an appropriately sensitive region of the diaphragm, a FBG from a second optical fiber attached to the opposite surface from the first FBG, the first and second FBGs reflecting or transmitting optical energy of decreasing or increasing wavelength, respectively, in response to an applied pressure. The first and second FBGs have nominal operating wavelength ranges that are adjacent to each other but are exclusive ranges and the FBGs also have closely matched pressure coefficients and temperature coefficients.Type: GrantFiled: November 4, 2021Date of Patent: February 13, 2024Assignee: Intelligent Fiber Optic Systems CorporationInventors: Vahid Sotoudeh, Behzad Moslehi, Joshua Kuehn, Richard J. Black
-
Patent number: 11877732Abstract: A biopsy needle has a cylindrical shell outer cannula and a stylet consisting of an inner stylet and outer stylet, both of which are inserted into the cylindrical cannula. The outer stylet has a series of strain relieved slits which provide bending over a deflection region in one direction, and the outer stylet is formed from a material such as a shape memory alloy (SMA) having a superelastic phase. The deflection is generated by an SMA wire spanning a deflection extent and attached to the outer stylet on either side of the deflection extent. The inner stylet, when positioned inside the outer stylet, has one or more actuation fibers which couple optical energy into the SMA wire, causing a deflection of the outer stylet over the deflection extent, with the optical energy provided to the actuation fibers for control of the deflection. Additional fibers may be placed in the inner stylet to measure temperature and to measure deflection.Type: GrantFiled: May 4, 2020Date of Patent: January 23, 2024Assignee: Intelligent Fiber Optic Systems CorporationInventors: Seok Chang Ryu, Mark Cutkosky, Richard J. Black, Joannes Mario Costa, Behzad Moslehi, Fereydoun Faridian, Levy Oblea, Vahid Sotoudeh
-
Patent number: 11846553Abstract: A temperature correcting pressure gauge which has a diaphragm having at least one surface coupled to a source of pressure to be measured, the diaphragm first surface having a first FBG from a first optical fiber attached in an appropriately sensitive region of the diaphragm, a FBG from a second optical fiber attached to the opposite surface from the first FBG, the first and second FBGs reflecting or transmitting optical energy of decreasing or increasing wavelength, respectively, in response to an applied pressure. The first and second FBGs have nominal operating wavelength ranges that are adjacent to each other but are exclusive ranges and the FBGs also have closely matched pressure coefficients and temperature coefficients.Type: GrantFiled: November 11, 2021Date of Patent: December 19, 2023Assignee: Intelligent Fiber Optic Systems CorporationInventors: Vahid Sotoudeh, Behzad Moslehi, Joshua Kuehn, Richard J. Black
-
Publication number: 20230333008Abstract: A Fourier transform spectrometer implemented on a photonic integrated circuit (PIC) is provided. An input optical signal waveguide carries an input optical signal to be analyzed to an on-chip Y branch splitter to split the input signal equally to carry coupled-optical signals related to the input optical signal into twin array waveguides of a first waveguide array and a second waveguide array. The optical signal from the first waveguide array and the optical signal from the second waveguide array intersect at a preset intersecting angle at an output plane of the PIC such that the spectral and spatial resolutions of the interferogram of the spectrometer are determined by the intersecting angle.Type: ApplicationFiled: March 8, 2023Publication date: October 19, 2023Inventors: Katsunari Okamoto, Behzad Moslehi, Mehrdad M. Moslehi
-
Publication number: 20230136164Abstract: A temperature correcting pressure gauge which has a diaphragm having at least one surface coupled to a source of pressure to be measured, the diaphragm first surface having a first FBG from a first optical fiber attached in an appropriately sensitive region of the diaphragm, a FBG from a second optical fiber attached to the opposite surface from the first FBG, the first and second FBGs reflecting or transmitting optical energy of decreasing or increasing wavelength, respectively, in response to an applied pressure. The first and second FBGs have nominal operating wavelength ranges that are adjacent to each other but are exclusive ranges and the FBGs also have closely matched pressure coefficients and temperature coefficients.Type: ApplicationFiled: November 4, 2021Publication date: May 4, 2023Applicant: Intelligent Fiber Optic Systems, inc.Inventors: Vahid SOTOUDEH, Behzad MOSLEHI, Joshua KUEHN, Richard J. BLACK
-
Patent number: 11598678Abstract: A distributed temperature sensor system has a pulsed laser coupled to a circulator, the circulator having a laser input and coupling energy to an optical reference coil in series with a measurement fiber having loops or helical turns, the circulator having a backscatter signal port coupling backscattered reflections from the measurement fiber. The backscatter signal port is coupled to a switch and mux, the switch and mux selecting either an anti-Stokes filter or a Stokes filter, the output of the mux coupled to a photodetector, the photodetector coupled to a histogram processor synchronized to the pulsed laser enable. The histogram processor uses the anti-Stokes and Stokes histogram counts associated with a sensor region to estimate a temperature of that sensor region.Type: GrantFiled: December 17, 2019Date of Patent: March 7, 2023Assignee: Intelligent Fiber Optic Systems, Inc.Inventors: Behzad Moslehi, Mehrdad Moslehi
-
Patent number: 11471135Abstract: A biopsy needle has a central axis and includes one or more sensing regions, each sensing region formed by a plurality of sensing optical fibers located over a particular extent of said central axis and inside the outer shell of the needle. The sensing optical fibers are coupled to a wavelength interrogator. A steerable catheter has a central axis and outer shell, the outer shell coupled to a plurality of optical fibers in sensing regions and actuation regions, the sensing regions formed over particular extents of the central axis by bonding gratings to the inner surface of the outer shell, and the actuation regions formed by coupling optical energy into shape memory alloys bonded to the outer shell.Type: GrantFiled: February 11, 2019Date of Patent: October 18, 2022Assignee: Intelligent Fiber Optic Systems, Inc.Inventors: Yong-Lae Park, Richard James Black, Behzad Moslehi, Mark R. Cutkosky, Santhi Elayaperumal, Bruce Daniel, Alan Yeung, Vahid Sotoudeh
-
Publication number: 20220283045Abstract: An optical sensing system including an optical interrogator is operative with an array of reflective sensors, each sensor providing a separable reflected spectral response parameter such as a unique Gaussian standard deviation or reflected response compared to other sensors in the same operating wavelength range. The optical interrogator provides narrowband swept or broadband continuous optical power source to the array of FBG sensors, and an optical interrogator generates a g(x) representation of power vs wavelength of the reflected optical power and decomposes the representation into the wavelength of the individual sensors, thereby allowing operation of two or more FBG sensors in the same operating wavelength range.Type: ApplicationFiled: March 2, 2021Publication date: September 8, 2022Applicant: Intelligent Fiber Optic Systems CorporationInventors: Behzad MOSLEHI, Mehrdad MOSLEHI
-
Publication number: 20220065724Abstract: A temperature correcting pressure gauge which has a diaphragm having at least one surface coupled to a source of pressure to be measured, the diaphragm first surface having a first FBG from a first optical fiber attached in an appropriately sensitive region of the diaphragm, a FBG from a second optical fiber attached to the opposite surface from the first FBG, the first and second FBGs reflecting or transmitting optical energy of decreasing or increasing wavelength, respectively, in response to an applied pressure. The first and second FBGs have nominal operating wavelength ranges that are adjacent to each other but are exclusive ranges and the FBGs also have closely matched pressure coefficients and temperature coefficients.Type: ApplicationFiled: November 11, 2021Publication date: March 3, 2022Applicant: Intelligent Fiber Optic Systems, Inc.Inventors: Vahid SOTOUDEH, Behzad MOSLEHI, Joshua KUEHN, Richard J. BLACK
-
Patent number: 11199462Abstract: A temperature correcting pressure gauge which has a diaphragm having at least one surface coupled to a source of pressure to be measured, the diaphragm first surface having a first FBG from a first optical fiber attached in an appropriately sensitive region of the diaphragm, a FBG from a second optical fiber attached to the opposite surface from the first FBG, the first and second FBGs reflecting or transmitting optical energy of decreasing or increasing wavelength, respectively, in response to an applied pressure. The first and second FBGs have nominal operating wavelength ranges that are adjacent to each other but are exclusive ranges and the FBGs also have closely matched pressure coefficients and temperature coefficients.Type: GrantFiled: December 11, 2019Date of Patent: December 14, 2021Assignee: Intelligent Fiber Optic Systems, Inc.Inventors: Vahid Sotoudeh, Behzad Moslehi, Joshua Kuehn, Richard J. Black
-
Publication number: 20210219966Abstract: A biopsy needle has a cylindrical shell outer cannula and a stylet consisting of an inner stylet and outer stylet, both of which are inserted into the cylindrical cannula. The outer stylet has a series of strain relieved slits which provide bending over a deflection region in one direction, and the outer stylet is formed from a material such as a shape memory alloy (SMA) having a superelastic phase. The deflection is generated by an SMA wire spanning a deflection extent and attached to the outer stylet on either side of the deflection extent. The inner stylet, when positioned inside the outer stylet, has one or more actuation fibers which couple optical energy into the SMA wire or hollow SMA tube, causing a deflection of the outer stylet over the deflection extent, with the optical energy provided to the actuation fibers for control of the deflection. Additional fibers may be placed in the inner stylet to measure temperature and to measure deflection.Type: ApplicationFiled: April 9, 2021Publication date: July 22, 2021Applicant: Intelligent Fiber Optic Systems, Inc.Inventors: Seok Chang RYU, Richard J. BLACK, Behzad MOSLEHI
-
Patent number: 11000265Abstract: A biopsy needle has a cylindrical shell outer cannula and a stylet consisting of an inner stylet and outer stylet, both of which are inserted into the cylindrical cannula. The outer stylet has a series of strain relieved slits which provide bending over a deflection region in one direction, and the outer stylet is formed from a material such as a shape memory alloy (SMA) having a superelastic phase. The deflection is generated by an SMA wire spanning a deflection extent and attached to the outer stylet on either side of the deflection extent. The inner stylet, when positioned inside the outer stylet, has one or more actuation fibers which couple optical energy into the SMA wire or hollow SMA tube, causing a deflection of the outer stylet over the deflection extent, with the optical energy provided to the actuation fibers for control of the deflection. Additional fibers may be placed in the inner stylet to measure temperature and to measure deflection.Type: GrantFiled: June 19, 2017Date of Patent: May 11, 2021Assignee: Intelligent Fiber Optic Systems, Inc.Inventors: Seok Chang Ryu, Richard J. Black, Behzad Moslehi
-
Patent number: 10801267Abstract: A drill has a stationary drive mechanism coupled to a rotating drill, the rotating drill having a serpentine optical fiber positioned on an inner shell having a serpentine groove with fiber Bragg gratings (FBGs) coupled to the inner shell and arranged parallel to the central axis of rotation for measurement of axial forces and also positioned circumferentially for measurement of drill torque. The FBGs are arranged on a single optical fiber and coupled to a broadband optical source such that reflected optical energy is directed to an interrogator for estimate of strain at each FBG. The FBG responses may also be examined dynamically to estimate material hardness during a drilling operation.Type: GrantFiled: June 8, 2018Date of Patent: October 13, 2020Assignee: Intelligent Fiber Optic Systems, Inc.Inventors: Richard J. Black, Behzad Moslehi
-
Patent number: 10675008Abstract: A biopsy needle has a cylindrical shell outer cannula and a stylet consisting of an inner stylet and outer stylet, both of which are inserted into the cylindrical cannula. The outer stylet has a series of strain relieved slits which provide bending over a deflection region in one direction, and the outer stylet is formed from a material such as a shape memory alloy (SMA) having a superelastic phase. The deflection is generated by an SMA wire spanning a deflection extent and attached to the outer stylet on either side of the deflection extent. The inner stylet, when positioned inside the outer stylet, has one or more actuation fibers which couple optical energy into the SMA wire, causing a deflection of the outer stylet over the deflection extent, with the optical energy provided to the actuation fibers for control of the deflection.Type: GrantFiled: September 24, 2013Date of Patent: June 9, 2020Assignee: Intelligent Fiber Optic Systems, Inc.Inventors: Seok Chang Ryu, Mark Cutkosky, Richard J. Black, Joannes Mario Costa, Behzad Moslehi, Fereydoun Faridian, Levy Oblea, Vahid Sotoudeh
-
Publication number: 20190192124Abstract: A biopsy needle has a central axis and includes one or more sensing regions, each sensing region formed by a plurality of sensing optical fibers located over a particular extent of said central axis and inside the outer shell of the needle. The sensing optical fibers are coupled to a wavelength interrogator. A steerable catheter has a central axis and outer shell, the outer shell coupled to a plurality of optical fibers in sensing regions and actuation regions, the sensing regions formed over particular extents of the central axis by bonding gratings to the inner surface of the outer shell, and the actuation regions formed by coupling optical energy into shape memory alloys bonded to the outer shell.Type: ApplicationFiled: February 11, 2019Publication date: June 27, 2019Applicant: Intelligent Fiber Optic Systems, Inc.Inventors: Yong-Lae PARK, Richard James BLACK, Behzad MOSLEHI, Mark R. CUTKOSKY, Santhi ELAYAPERUMAL, Bruce DANIEL, Alan YEUNG, Vahid SOTOUDEH
-
Patent number: 10238370Abstract: A biopsy needle has a central axis and includes one or more sensing regions, each sensing region formed by a plurality of sensing optical fibers located over a particular extent of said central axis and inside the outer shell of the needle. The sensing optical fibers are coupled to a wavelength interrogator. A steerable catheter has a central axis and outer shell, the outer shell coupled to a plurality of optical fibers in sensing regions and actuation regions, the sensing regions formed over particular extents of the central axis by bonding gratings to the inner surface of the outer shell, and the actuation regions formed by coupling optical energy into shape memory alloys bonded to the outer shell.Type: GrantFiled: January 3, 2014Date of Patent: March 26, 2019Assignee: INTELLIGENT FIBER OPTIC SYSTEMS, INC.Inventors: Yong-Lae Park, Richard James Black, Behzad Moslehi, Mark R. Cutkosky, Santhi Elayaperumal, Bruce Daniel, Alan Yeung, Vahid Sotoudeh
-
Patent number: 9883973Abstract: A movement and expression sensor has a plurality of fiber Bragg gratings (FBG) disposed along the length of an optical fiber, and the optical fiber is placed in contact with a subject's skin surface. The sensors are interrogated for reflected wavelength, which is converted into a temperature or a strain. A series of such measurements can be made to determine the movement or position of the sensor location. A garment may be formed using the sensors and an elastomeric material, such that the sensors may be worn and removed, and the movements of the elastomer in the areas of sensors measured as a wavelength shift to characterize movement or estimate location. The elastomeric garment may be formed as a mask, or a sock, such as for use with a face, or foot.Type: GrantFiled: July 20, 2016Date of Patent: February 6, 2018Inventor: Behzad Moslehi
-
Patent number: 9823137Abstract: A thermal protection system (TPS) test plug has optical fibers with FBGs embedded in the optical fiber arranged in a helix, an axial fiber, and a combination of the two. Optionally, one of the optical fibers is a sapphire FBG for measurement of the highest temperatures in the TPS plug. The test plug may include an ablating surface and a non-ablating surface, with an engagement surface with threads formed, the threads having a groove for placement of the optical fiber. The test plug may also include an optical connector positioned at the non-ablating surface for protection of the optical fiber during insertion and removal.Type: GrantFiled: November 30, 2013Date of Patent: November 21, 2017Assignee: Intelligent Fiber Optic Systems, Inc.Inventors: Richard James Black, Joannes M. Costa, Behzad Moslehi, Livia Zarnescu
-
Patent number: 9423311Abstract: A movement and expression sensor has a plurality of fiber Bragg gratings (FBG) disposed along the length of an optical fiber, and the optical fiber is placed in contact with a subject's skin surface. The sensors are interrogated for reflected wavelength, which is converted into a temperature or a strain. A series of such measurements can be made to determine the movement or position of the sensor location. A garment may be formed using the sensors and an elastomeric material, such that the sensors may be worn and removed, and the movements of the elastomer in the areas of sensors measured as a wavelength shift to characterize movement or estimate location. The elastomeric garment may be formed as a mask, or a sock, such as for use with a face, or foot.Type: GrantFiled: March 14, 2013Date of Patent: August 23, 2016Inventor: Behzad Moslehi