Patents by Inventor Yaakov Achiam
Yaakov Achiam 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: 8143575Abstract: A method and system for high Z substance revealing using muon detection technique is presented. Natural muon coordinate and incidence angle are measured above and below the interrogated volume. The muon deviations after passing through the interrogated volume are compared with the reference deviations obtained for the same volume in absence of high Z material. A correlation between the actual data and reference data is calculated using Kolmogorov-Smirnov test, though other approaches may apply. The correlation is used for the decision making on the presence of a nuclear substance inside the volume.Type: GrantFiled: November 13, 2009Date of Patent: March 27, 2012Assignee: CeLight, Inc.Inventors: Jacques Goldberg, Isaac Shpantzer, Yaakov Achiam, Nadya Reingand
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Patent number: 8019556Abstract: A method and system for nuclear substance revealing using muon detection technique is presented. In some aspects, naturally occurred muons are selected from the flow of charged particles. Muon coordinate and incidence angle measured above and below the interrogated volume can be used for the decision making on the presence of nuclear substance inside the volume. The system is adapted for performing measurements on moving objects such as moving trucks. A combination of the nuclear substance detection system with an explosive sensing system is presented.Type: GrantFiled: August 11, 2009Date of Patent: September 13, 2011Inventors: Isaac Shpantzer, Yaakov Achiam, Nadejda Reingand
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Patent number: 8009294Abstract: A photo-thermal, interferometric spectroscopy system is disclosed that provides information about a chemical, such as explosives and the like, at a remote location. It may be used for solid residue detection on a surface. The system includes a novel light detector system with a matrix of optical elements focusing portions of a received light beam on input waveguides of an optical combiner. The combiner adjusts the phases of the received beam portions and combines them together to maximize the intensity of an output beam. The output beam is detected by a detector, and information about at least one of, absorption spectrum and concentration of the chemical is recovered. In the preferred embodiment the detector is a coherent detector based on 90-degrees optical hybrid.Type: GrantFiled: January 29, 2009Date of Patent: August 30, 2011Assignee: CeLight, Inc.Inventors: Isaac Shpantzer, Jacob Khurgin, Arkady Kaplan, Pak Shing Cho, Yaakov Achiam
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Patent number: 7897925Abstract: A method and system for high Z material revealing using muon detection technique is presented. The system measures muons' coordinates, velocities, incidence angles and leaving angles. Two series of detectors: one above and one below the interrogated volume are used. A muon trajectory deviation from an expected trajectory is used for the decision making on the presence of high Z material inside the volume. The muon velocity is measured using either a ring Cerenkov counter, a transition radiation detector or/and a threshold Cerenkov counter. The expected trajectory is calculated basing on known particle velocity.Type: GrantFiled: November 17, 2008Date of Patent: March 1, 2011Assignee: CeLight, Inc.Inventors: Jacques Goldberg, Isaac Shpantzer, Yaakov Achiam, Nadejda Reingand
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Patent number: 7801395Abstract: An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides.Type: GrantFiled: November 12, 2007Date of Patent: September 21, 2010Assignee: CeLight, Inc.Inventors: Isaac Shpantzer, Aviv Salamon, Arkady Kaplan, Pak Shing Cho, Jacob Khurgin, Yaakov Achiam, Arthur Greenblatt, Geofrey Harston
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Publication number: 20100065745Abstract: A method and system for high Z substance revealing using muon detection technique is presented. Natural muon coordinate and incidence angle are measured above and below the interrogated volume. The muon deviations after passing through the interrogated volume are compared with the reference deviations obtained for the same volume in absence of high Z material. A correlation between the actual data and reference data is calculated using Kolmogorov-Smirnov test, though other approaches may apply. The correlation is used for the decision making on the presence of a nuclear substance inside the volume.Type: ApplicationFiled: November 13, 2009Publication date: March 18, 2010Inventors: Jacques Goldberg, Isaac Shpantzer, Yaakov Achiam, Nadya Reingand
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Patent number: 7652254Abstract: A method and system for nuclear substance revealing using muon detection technique is presented. In some aspects, naturally occurred muons are selected from the flow of charged particles. Muon coordinate and incidence angle measured above and below the interrogated volume can be used for the decision making on the presence of nuclear substance inside the volume. The system is adapted for performing measurements on moving objects such as moving trucks. A combination of the nuclear substance detection system with an explosive sensing system is presented.Type: GrantFiled: January 25, 2007Date of Patent: January 26, 2010Assignee: CeLight, Inc.Inventors: Isaac Shpantzer, Yaakov Achiam, Nadejda Reingand
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Publication number: 20090295576Abstract: A method and system for nuclear substance revealing using muon detection technique is presented. In some aspects, naturally occurred muons are selected from the flow of charged particles. Muon coordinate and incidence angle measured above and below the interrogated volume can be used for the decision making on the presence of nuclear substance inside the volume. The system is adapted for performing measurements on moving objects such as moving trucks. A combination of the nuclear substance detection system with an explosive sensing system is presented.Type: ApplicationFiled: August 11, 2009Publication date: December 3, 2009Inventors: Isaac Shpantzer, Yaakov Achiam, Nadejda Reingand
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Publication number: 20090236528Abstract: A photo-thermal, interferometric spectroscopy system is disclosed that provides information about a chemical, such as explosives and the like, at a remote location. It may be used for solid residue detection on a surface. The system includes a novel light detector system with a matrix of optical elements focusing portions of a received light beam on input waveguides of an optical combiner. The combiner adjusts the phases of the received beam portions and combines them together to maximize the intensity of an output beam. The output beam is detected by a detector, and information about at least one of, absorption spectrum and concentration of the chemical is recovered. In the preferred embodiment the detector is a coherent detector based on 90-degrees optical hybrid.Type: ApplicationFiled: January 29, 2009Publication date: September 24, 2009Inventors: Isaac Shpantzer, Jacob Khurgin, Arkady Kaplan, Pak Shing Cho, Yaakov Achiam
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Publication number: 20090214224Abstract: A system for high fidelity analog RF photonic communications is disclosed wherein linear phase modulation and linear coherent demodulation is included. A single optical beam with a phase-modulated signal optical carrier combined with an orthogonally polarized reference unmodulated optical carrier is transmitted simultaneously. At the receiver, the polarization of the reference carrier is transform to match that of the signal followed by coherent detection. An in-phase and quadrature-phase component of the homodyne signal is generated where they are digitized and processed to recover the original RF signal.Type: ApplicationFiled: May 4, 2009Publication date: August 27, 2009Inventors: Pak Shing Cho, Yaakov Achiam
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Publication number: 20090142051Abstract: An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides.Type: ApplicationFiled: November 12, 2007Publication date: June 4, 2009Inventors: Isaac Shpantzer, Aviv Salamon, Arkady Kaplan, Pak Shing Cho, Jacob Khurgin, Yaakov Achiam, Arthur Greenblatt, Geofrey Harston
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Patent number: 7483600Abstract: The present invention provides an integrated device and a method of its fabrication and use. Two parts of the device each having an electronic circuit are aligned adjacent to each other with an accuracy of at least 1 micron. An alignment system includes two parts: a first part integrated with the first electronic circuit of the integrated device on the first substrate and a second part integrated with the second electronic circuit of the integrated device on the second substrate. The second part of alignment system includes at least one photodiode. The maximal value of the photodiode current indicates the best alignment of two parts of the integrated device. In one embodiment the integrated device is a coherent optical detector for high speed optical communications and chemical sensing. In another embodiment the integrated optical device is a coherent optical detector operating in two polarization states of light.Type: GrantFiled: February 7, 2007Date of Patent: January 27, 2009Assignee: CeLight, Inc.Inventors: Yaakov Achiam, Isaac Shpantzer, Arthur Greenblatt, Geoffrey Harston, Arkady Kaplan, Pak Shing Cho
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Patent number: 7470905Abstract: A method and system for high Z substance revealing using muon detection technique is presented. Natural muon coordinate and incidence angle are measured above and below the interrogated volume. The data on muons trajectory change caused by the presence of high Z material and the muons time of flight between the upper and lower muon detectors are used for the decision making on the presence of a nuclear substance inside the volume. The system is adapted for performing measurements on moving objects such as moving trucks.Type: GrantFiled: November 29, 2007Date of Patent: December 30, 2008Assignee: CeLight, Inc.Inventors: Jacques Goldberg, Isaac Shpantzer, Yaakov Achiam, Nadejda Reingand
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Patent number: 7397979Abstract: An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides.Type: GrantFiled: December 14, 2006Date of Patent: July 8, 2008Assignee: CeLight, Inc.Inventors: Isaac Shpantzer, Arkady Kaplan, Aviv Salamon, Yaakov Achiam, Jacob B. Khurgin, Michael Tseytlin, Pak Shing Cho, Arthur Greenblatt, Christopher Kerr, Geoffrey Harston
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Patent number: 7327913Abstract: An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides.Type: GrantFiled: September 22, 2003Date of Patent: February 5, 2008Assignee: Celight, Inc.Inventors: Isaac Shpantzer, Arkady Kaplan, Aviv Salamon, Yaakov Achiam, Jacob B. Khurgin, Michael Tseytlin, Pak Shing Cho, Arthur Greenblatt, Christopher Kerr, Geoffrey Harston
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Patent number: 7315697Abstract: A multiple wavelength light source generates an output signal having a comb of accurately spaced apart frequencies with variable free spectral range in the C-band of optical fiber communication. The light source employs an electro-optical modulator (EOM) driven by a signal generator which modulates with EOM with multiple modulation frequencies to widen the output spectrum of signal. The EOM has a crystal provided with a waveguide. The waveguide may be doped with a rare-earth metal to impart gain properties to equalize the intensities of the comb. In one preferred embodiment, Er, Yt or other doping elements provide the gain property to waveguides. The crystal is also provided with periodically poled structure, and this may be engineered so as to form domains of unequal widths to improve the efficiency of modulation. The output signal from the light source may be split and presented to a bank of filters to create a multiple signals, each signal having one of the spaced apart frequencies.Type: GrantFiled: June 18, 2002Date of Patent: January 1, 2008Assignee: CeLight, Inc.Inventors: Israel Smilanski, Isaac Shpantzer, Jacob B. Khurgin, Nadejda Reingand, Pak Shing Cho, Yaakov Achiam
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Patent number: 7277178Abstract: A photo-thermal, interferometric spectroscopy system is disclosed that provides information about a chemical at a remote location. A first light source assembly is included that emits a first beam. The first beam has one or more wavelengths that interact with the chemical and change a refractive index of the chemical. A second light source produces a second beam. The second beam interacts with the chemical resulting in a third beam with a phase change that corresponds with the change of the refractive index of the chemical. A detector system is positioned remote from the chemical to receive at least a portion of the third beam. The detector system provides information on a phase change in the third beam relative to the second beam that is indicative of at least one of, absorption spectrum and concentration of the chemical.Type: GrantFiled: January 13, 2005Date of Patent: October 2, 2007Assignee: Celight, Inc.Inventors: Isaac Shpantzer, Jacob B. Khurgin, Pak Shing Cho, Yaakov Achiam
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Patent number: 7272271Abstract: An optical device includes, a first Mach-Zehnder modulator that produces a first output, and a second Mach-Zehnder modulator which produces a second output. A splitter couples the first and second Mach-Zehnder modulators. A combiner combines the first and second outputs. A phase shifter is coupled to the first and second Mach-Zehnder modulators. The first Mach-Zehnder modulator, second Mach-Zehnder modulator, splitter, combiner and the phase shifter are each formed as part of a single chip made of electro-optical material. Such two similar optical device integrated together with polarization combiner provide a two-polarization performance.Type: GrantFiled: July 2, 2003Date of Patent: September 18, 2007Assignee: Celight, Inc.Inventors: Arkady Kaplan, Yaakov Achiam, Arthur Greenblatt, Isaac Shpantzer, Pak Shing Cho, Michael Tseytlin, Aviv Salamon
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Publication number: 20070140613Abstract: The present invention provides an integrated device and a method of its fabrication and use. Two parts of the device each having an electronic circuit are aligned adjacent to each other with an accuracy of at least 1 micron. An alignment system includes two parts: a first part integrated with the first electronic circuit of the integrated device on the first substrate and a second part integrated with the second electronic circuit of the integrated device on the second substrate. The second part of alignment system includes at least one photodiode. The maximal value of the photodiode current indicates the best alignment of two parts of the integrated device. In one embodiment the integrated device is a coherent optical detector for high speed optical communications and chemical sensing. In another embodiment the integrated optical device is a coherent optical detector operating in two polarization states of light.Type: ApplicationFiled: February 7, 2007Publication date: June 21, 2007Inventors: Yaakov Achiam, Isaac Shpantzer, Arthur Greenblatt, Geoffrey Harston, Arkady Kaplan, Pak Cho
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Publication number: 20070110362Abstract: An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides.Type: ApplicationFiled: December 14, 2006Publication date: May 17, 2007Inventors: Isaac Shpantzer, Arkady Kaplan, Aviv Salamon, Yaakov Achiam, Jacob Khurgin, Michael Tseytin, Pak Cho, Arthur Greenblatt, Christopher Kerr, Geothrey Harston