Patents by Inventor Paul Steinvurzel
Paul Steinvurzel 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: 9601529Abstract: A nanowire array is described herein. The nanowire array comprises a substrate and a plurality of nanowires extending essentially vertically from the substrate; wherein: each of the nanowires has uniform chemical along its entire length; a refractive index of the nanowires is at least two times of a refractive index of a cladding of the nanowires. This nanowire array is useful as a photodetector, a submicron color filter, a static color display or a dynamic color display.Type: GrantFiled: February 26, 2015Date of Patent: March 21, 2017Assignees: ZENA TECHNOLOGIES, INC., PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Kwanyong Seo, Munib Wober, Paul Steinvurzel, Ethan Schonbrun, Yaping Dan, Kenneth Crozier
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Publication number: 20160344964Abstract: Methods, apparatuses, systems, and devices relating to fabricating one or more nanowires are disclosed. One method for fabricating a nanowire includes: selecting a particular wavelength of electromagnetic radiation for absorption for a nanowire; determining a diameter corresponding to the particular wavelength; and fabricating a nanowire having the determined diameter. According to another embodiment, one or more nanowires may be fabricated in an array, each having the same or different determined diameters. An image sensor and method of imaging using such an array are also disclosed.Type: ApplicationFiled: August 1, 2016Publication date: November 24, 2016Inventors: Kwanyong Seo, Paul Steinvurzel, Ethan Schonbrun, Munib Wober, Kenneth B. Crozier
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Patent number: 9406709Abstract: Methods, apparatuses, systems, and devices relating to fabricating one or more nanowires are disclosed. One method for fabricating a nanowire includes: selecting a particular wavelength of electromagnetic radiation for absorption for a nanowire; determining a diameter corresponding to the particular wavelength; and fabricating a nanowire having the determined diameter. According to another embodiment, one or more nanowires may be fabricated in an array, each having the same or different determined diameters. An image sensor and method of imaging using such an array are also disclosed.Type: GrantFiled: December 13, 2010Date of Patent: August 2, 2016Assignees: PRESIDENT AND FELLOWS OF HARVARD COLLEGE, ZENA TECHNOLOGIES, INC.Inventors: Kwanyong Seo, Paul Steinvurzel, Ethan Schonbrun, Munib Wober, Kenneth B. Crozier
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Publication number: 20150171244Abstract: A nanowire array is described herein. The nanowire array comprises a substrate and a plurality of nanowires extending essentially vertically from the substrate; wherein: each of the nanowires has uniform chemical along its entire length; a refractive index of the nanowires is at least two times of a refractive index of a cladding of the nanowires. This nanowire array is useful as a photodetector, a submicron color filter, a static color display or a dynamic color display.Type: ApplicationFiled: February 26, 2015Publication date: June 18, 2015Inventors: Kwanyong Seo, Munib Wober, Paul Steinvurzel, Ethan Schonbrun, Yaping Dan, Kenneth Crozier
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Patent number: 9000353Abstract: A nanowire array is described herein. The nanowire array comprises a substrate and a plurality of nanowires extending essentially vertically from the substrate; wherein: each of the nanowires has uniform chemical along its entire length; a refractive index of the nanowires is at least two times of a refractive index of a cladding of the nanowires. This nanowire array is useful as a photodetector, a submicron color filter, a static color display or a dynamic color display.Type: GrantFiled: October 22, 2010Date of Patent: April 7, 2015Assignees: President and Fellows of Harvard College, Zena Technologies, Inc.Inventors: Kwanyong Seo, Munib Wober, Paul Steinvurzel, Ethan Schonbrun, Yaping Dan, Kenneth B. Crozier
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Patent number: 8718411Abstract: A method and apparatus for providing optical supercontinuum. The method comprises creating a spectrally narrow phase feature within a supercontinuum spectrum produced from a laser pulse that has been subjected to supercontinuum generation, thereby producing a modified supercontinuum spectrum, and propagating the modified supercontinuum spectrum through an optical waveguide that is suitable for supercontinuum generation, thereby further modifying the modified supercontinuum spectrum. The method may include modifying the modified supercontinuum spectrum by increasing its energy in a vicinity of the phase feature.Type: GrantFiled: July 5, 2007Date of Patent: May 6, 2014Assignee: The University of SydneyInventors: Dane Austin, Benjamin John Eggleton, Carel Martijn De Sterke, Paul Steinvurzel, Jeremy Bolger, Thomas Brown, Feng Luan, Dong-Il Yeom
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Publication number: 20110309237Abstract: A nanowire array is described herein. The nanowire array comprises a substrate and a plurality of nanowires extending essentially vertically from the substrate; wherein: each of the nanowires has uniform chemical along its entire length; a refractive index of the nanowires is at least two times of a refractive index of a cladding of the nanowires. This nanowire array is useful as a photodetector, a submicron color filter, a static color display or a dynamic color display.Type: ApplicationFiled: October 22, 2010Publication date: December 22, 2011Applicants: PRESIDENT AND FELLOWS OF HARVARD COLLEGE, ZENA TECHNOLOGIES, INC.Inventors: Kwanyong SEO, Munib Wober, Paul Steinvurzel, Ethan Schonbrun, Yaping Dan, Kenneth B. Crozier
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Publication number: 20110309233Abstract: Methods, apparatuses, systems, and devices relating to fabricating one or more nanowires are disclosed. One method for fabricating a nanowire includes: selecting a particular wavelength of electromagnetic radiation for absorption for a nanowire; determining a diameter corresponding to the particular wavelength; and fabricating a nanowire having the determined diameter. According to another embodiment, one or more nanowires may be fabricated in an array, each having the same or different determined diameters. An image sensor and method of imaging using such an array are also disclosed.Type: ApplicationFiled: December 13, 2010Publication date: December 22, 2011Applicants: PRESIDENT AND FELLOWS OF HARVARD COLLEGE, ZENA TECHNOLOGIES, INC.Inventors: Kwanyong SEO, Paul Steinvurzel, Ethan Schonbrun, Munib Wober, Kenneth B. Crozier
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Publication number: 20100067555Abstract: A method and apparatus for providing optical supercontinuum. The method comprises creating a spectrally narrow phase feature within a supercontinuum spectrum produced from a laser pulse that has been subjected to supercontinuum generation, thereby producing a modified supercontinuum spectrum, and propagating the modified supercontinuum spectrum through an optical waveguide that is suitable for supercontinuum generation, thereby further modifying the modified supercontinuum spectrum. The method may include modifying the modified supercontinuum spectrum by increasing its energy in a vicinity of the phase feature.Type: ApplicationFiled: July 5, 2007Publication date: March 18, 2010Applicant: The University of SydneyInventors: Dane Austin, Benjamin John Eggleton, Carel Martijn De Sterke, Paul Steinvurzel, Jeremy Bolger, Thomas Brown, Feng Luan, Dong-II Yeom
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Patent number: 6940889Abstract: In accordance with the invention, a modulated RZ pulse source comprises a modulated light source optically coupled to a stabilized Bragg grating filter and one or more optical taps. The light source is preferably modulated in power and frequency and has an adjustable channel wavelength ?. The Bragg grating filter has a reflectivity bandwidth having a high slope reflectivity cutoff and is preferably tunable. A feedback arrangement responsive to the taps keeps the source channel wavelength ? on the edge of the reflectivity bandwidth for shaping RZ pulses. When the Bragg grating is stabilized, the feedback system maintains ? at a value linked to the grating reflectivity edge and, by overlapping at least part of the optical spectrum of the source, converts the modulated source light into RZ pulses with high extinction ratio (?12 dB). The result is a high power, jitter-free RZ pulse source that is compact, inexpensive and power efficient.Type: GrantFiled: February 26, 2002Date of Patent: September 6, 2005Assignee: Lucent Technologies Inc.Inventors: Benjamin John Eggleton, Daniel Mahgerefteh, Paul Steinvurzel, Paul Stephen Westbrook
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Patent number: 6847763Abstract: A colorless tunable dispersion compensator (TDC) comprises a plurality of N separate dispersion compensation elements, each centered at a different wavelength used in the communication system. A single tuning element is coupled to the plurality of separate dispersion compensation elements. A 1-out-of-N selector (such as a 1×N optical switch) is used to select the particular tunable dispersion compensation element to be implemented for an associated channel in the system. Advantageously, the same TDC can then be used in association with each channel in the communication system, as controlled by the 1-out-of-N selector to chose the particular compensation element for a specific channel wavelength.Type: GrantFiled: December 17, 2002Date of Patent: January 25, 2005Assignee: Fitel U.S.A. CorpInventors: Benjamin J. Eggleton, Richard J. Ramsay, Paul Steinvurzel
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Patent number: 6807338Abstract: A multi-wavelength cascaded Raman resonator (“MWCRR”). The MWCRR has an optical source for pumping optical radiation centered around an input wavelength. The MWCRR further includes a Raman fiber having at least a first set of optical gratings for converting the pumped optical radiation to wavelengths other than the input wavelength. The Raman fiber also has at least one adjustable output coupler having a variable reflectivity for controlling the power of the optical radiation propagating from the at least one set of optical gratings at the wavelengths other than the input wavelength.Type: GrantFiled: September 27, 2001Date of Patent: October 19, 2004Assignee: Fitel USA Corp.Inventors: Jean-Christophe Bouteiller, Benjamin John Eggleton, Clifford Headley, Paul Steinvurzel
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Patent number: 6778734Abstract: A thermally tunable optical fiber device comprises a length of optical fiber including a device disposed within a microcapillary heater. The microcapillary heater can include a thin film resistive heater. The fiber itself can optionally include a thin film resistive heater overlying the device, and a plurality of nested microcapillary tubes can optionally provide a plurality of successive concentric heaters overlying the device. The heaters films can be films with uniform, tapered or periodically varying thickness. The heaters can be single layer or multiple layer. Multiple layer films can be superimposed with intervening insulating layers or plural layers can be formed on different angular regions of the microcapillary. Thus one can provide virtually any desired temperature versus length profile along the fiber device.Type: GrantFiled: January 15, 2002Date of Patent: August 17, 2004Assignee: Lucent Technologies Inc.Inventors: Kirk William Baldwin, Benjamin John Eggleton, Kenneth Stephen Feder, Robert A. Macharrie, John A. Rogers, Paul Steinvurzel, Jon Engelberth, Rajan Deshmukh
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Patent number: 6768577Abstract: A tunable multimode wavelength division multiplex Raman pump and amplifier, and a system, method, and computer program product for controlling a tunable Raman pump and amplifier. The tunability of the pump source is accomplished by either straining or heating an external fiber grating, thereby causing a different wavelength of light to be emitted by the pump source. The system includes a microprocessor-based controller that monitors an amplifier's performance and adjusts the drive current and/or wavelength of the tunable pumps of an amplifier to achieve a target performance.Type: GrantFiled: March 15, 2002Date of Patent: July 27, 2004Assignee: Fitel USA Corp.Inventors: Benjamin J. Eggleton, Paul Steinvurzel, Yoshihiro Emori, Shu Namiki, Akira Fujisaki, Toshio Kimura
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Publication number: 20040114863Abstract: A colorless tunable dispersion compensator (TDC) comprises a plurality of N separate dispersion compensation elements, each centered at a different wavelength used in the communication system. A single tuning element is coupled to the plurality of separate dispersion compensation elements. A 1-out-of-N selector (such as a 1×N optical switch) is used to select the particular tunable dispersion compensation element to be implemented for an associated channel in the system. Advantageously, the same TDC can then be used in association with each channel in the communication system, as controlled by the 1-out-of-N selector to chose the particular compensation element for a specific channel wavelength.Type: ApplicationFiled: December 17, 2002Publication date: June 17, 2004Inventors: Benjamin J. Eggleton, Richard J. Ramsay, Paul Steinvurzel
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Publication number: 20030174387Abstract: A tunable multimode wavelength division multiplex Raman pump and amplifier, and a system, method, and computer program product for controlling a tunable Raman pump and amplifier. The tunability of the pump source is accomplished by either straining or heating an external fiber grating, thereby causing a different wavelength of light to be emitted by the pump source. The system includes a microprocessor-based controller that monitors an amplifier's performance and adjusts the drive current and/or wavelength of the tunable pumps of an amplifier to achieve a target performance.Type: ApplicationFiled: March 15, 2002Publication date: September 18, 2003Applicant: FITEL USA CORPORATIONInventors: Benjamin J. Eggleton, Paul Steinvurzel, Yoshihiro Emori, Shu Namiki, Akira Fujisaki, Toshio Kimura
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Publication number: 20030133656Abstract: A thermally tunable optical fiber device comprises a length of optical fiber including a device disposed within a microcapillary heater. The microcapillary heater can include a thin film resistive heater. The fiber itself can optionally include a thin film resistive heater overlying the device, and a plurality of nested microcapillary tubes can optionally provide a plurality of successive concentric heaters overlying the device. The heaters films can be films with uniform, tapered or periodically varying thickness. The heaters can be single layer or multiple layer. Multiple layer films can be superimposed with intervening insulating layers or plural layers can be formed on different angular regions of the microcapillary. Thus one can provide virtually any desired temperature versus length profile along the fiber device.Type: ApplicationFiled: January 15, 2002Publication date: July 17, 2003Inventors: Kirk William Baldwin, Benjamin John Eggleton, Kenneth Stephen Feder, Robert A. Macharrie, John A. Rogers, Paul Steinvurzel, Jon Engelberth, Rajan Deshmukh
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Publication number: 20020131470Abstract: In accordance with the invention, a modulated RZ pulse source comprises a modulated light source optically coupled to a stabilized Bragg grating filter and one or more optical taps. The light source is preferably modulated in power and frequency and has an adjustable channel wavelength &lgr;. The Bragg grating filter has a reflectivity bandwidth having a high slope reflectivity cutoff and is preferably tunable. A feedback arrangement responsive to the taps keeps the source channel wavelength &lgr; on the edge of the reflectivity bandwidth for shaping RZ pulses. When the Bragg grating is stabilized, the feedback system maintains &lgr; at a value linked to the grating reflectivity edge and, by overlapping at least part of the optical spectrum of the source, converts the modulated source light into RZ pulses with high extinction ratio (≧12 dB). The result is a high power, jitter-free RZ pulse source that is compact, inexpensive and power efficient.Type: ApplicationFiled: February 26, 2002Publication date: September 19, 2002Applicant: Lucent Technologies Inc.Inventors: Benjamin John Eggleton, Daniel Mahgerefteh, Paul Steinvurzel, Paul Stephen Westbrook
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Publication number: 20020126956Abstract: A multi-wavelength cascaded Raman resonator (“MWCRR”). The MWCRR has an optical source for pumping optical radiation centered around an input wavelength. The MWCRR further includes a Raman fiber having at least a first set of optical gratings for converting the pumped optical radiation to wavelengths other than the input wavelength. The Raman fiber also has at least one adjustable output coupler having a variable reflectivity for controlling the power of the optical radiation propagating from the at least one set of optical gratings at the wavelengths other than the input wavelength.Type: ApplicationFiled: September 27, 2001Publication date: September 12, 2002Inventors: Jean-Christophe Bouteiller, Benjamin John Eggleton, Clifford Headley, Paul Steinvurzel