Patents by Inventor Chee Wei Wong
Chee Wei Wong 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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Publication number: 20140158871Abstract: Systems and methods for sensing properties of a workpiece and embedding a photonic sensor in metal are disclosed herein. In some embodiments, systems for sensing properties of a workpiece include an optical input, a photonic device, an optical detector, and a digital processing device. The optical input provides an optical signal at an output of the optical input. The photonic device is coupled to the workpiece and to the output of the optical input. The photonic device generates an output signal in response to the optical signal, wherein at least one of an intensity of the output signal and a wavelength of the output signal depends on at least one of thermal characteristics and mechanical characteristics of the workpiece. The optical detector receives the output signal from the photonic device and is configured to generate a corresponding electronic signal.Type: ApplicationFiled: December 7, 2012Publication date: June 12, 2014Applicant: The Trustees of Columbia University in the City of New YorkInventors: Chee Wei Wong, Rohitt Chatterjee, Xiaochun Li, Xugang Zhang
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Patent number: 8705898Abstract: Some embodiments of the disclosed subject matter provide systems, devices, and methods for tuning resonant wavelengths of an optical resonator. Some embodiments of the disclosed subject matter provide systems, devices, and methods for tuning dispersion properties of photonic crystal waveguides. In some embodiments, methods for tuning a resonant wavelength of an optical resonator are provided, the methods including: providing an optical resonator having a surface; determining an initial resonant wavelength emitted by the optical resonator in response to an electromagnetic radiation input; determining a number of layers of dielectric material based on a difference between the initial resonant wavelength and a target resonant wavelength and a predetermined tuning characteristic; and applying the determined number of layers of dielectric material to the surface of the optical resonator to tune the initial resonant wavelength to a tuned resonant wavelength.Type: GrantFiled: June 16, 2008Date of Patent: April 22, 2014Assignee: The Trustees of Columbia University in the City of New YorkInventors: Chee Wei Wong, Xiaodong Yang, Charlton Chen, Chad Husko
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Publication number: 20130177275Abstract: Exemplary embodiments of an apparatus, method, and computer readable medium are provided for producing a radiation. For example, a radiation having at least one pulse with a pulse-width of less than approximately 30 picoseconds can be produced using a photonic crystal waveguide arrangement which is (i) specifically structured and sized so as to be placed on an integrated circuit, and (ii) configured to produce the radiation having at least one pulse with a pulse-width of less than approximately 30 picoseconds.Type: ApplicationFiled: July 11, 2012Publication date: July 11, 2013Inventors: Alfredo De Rossi, Chad Husko, Sylvain Combrie, Chee Wei Wong
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Publication number: 20130042680Abstract: An apparatus for measuring gravitational force is provided having at least one optomechanical oscillator, the at least one optomechanical oscillator having an initial resonance, and a second resonance when displaced by gravitational force; and at least one photonic crystal having at least one cavity coupling optical and mechanical degrees of freedom of the oscillator.Type: ApplicationFiled: August 16, 2012Publication date: February 21, 2013Inventors: Chee Wei Wong, Ying Li, Jianjung Zheng, Daniel Rogers
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Publication number: 20130042679Abstract: An apparatus for measuring a gravitational force includes an optomechanical oscillator that deforms under the gravitational force to cause a shift in resonance associated with the optomechanical oscillator.Type: ApplicationFiled: August 15, 2012Publication date: February 21, 2013Applicant: THE JOHNS HOPKINS UNIVERSITYInventors: Chee Wei Wong, Ying Li, Jiangjun Zheng, Daniel J. Rogers
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Patent number: 8351742Abstract: Systems and methods for sensing properties of a workpiece and embedding a photonic sensor in metal are disclosed herein. In some embodiments, systems for sensing properties of a workpiece include an optical input, a photonic device, an optical detector, and a digital processing device. The optical input provides an optical signal at an output of the optical input. The photonic device is coupled to the workpiece and to the output of the optical input. The photonic device generates an output signal in response to the optical signal, wherein at least one of an intensity of the output signal and a wavelength of the output signal depends on at least one of thermal characteristics and mechanical characteristics of the workpiece. The optical detector receives the output signal from the photonic device and is configured to generate a corresponding electronic signal.Type: GrantFiled: October 15, 2010Date of Patent: January 8, 2013Assignee: The Trustees of Columbia University in the City of New YorkInventors: Chee Wei Wong, Rohit Chatterjee, Xiaochun Li, Xugang Zhang
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Patent number: 8287642Abstract: Devices and methods for providing stimulated Raman lasing are provided. In some embodiments, devices include a photonic crystal that includes a layer of silicon having a lattice of holes and a linear defect that forms a waveguide configured to receive pump light and output Stokes light through Raman scattering, wherein the thickness of the layer of silicon, the spacing of the lattice of holes, and the size of the holes are dimensioned to provide Raman lasing. In some embodiments, methods include forming a layer of silicon, and etching the layer of silicon to form a lattice of holes with a linear defect that forms a waveguide configured to receive pump light and output Stokes light through Raman scattering, wherein the thickness of the layer of silicon, the spacing of the lattice of holes, and the size of the holes are dimensioned to provide Raman lasing.Type: GrantFiled: November 17, 2010Date of Patent: October 16, 2012Assignee: The Trustees of Columbia University in the City of New YorkInventors: Chee Wei Wong, James F. McMillan, Xiaodong Yang, Richard Osgood, Jr., Jerry Dadap, Nicolae Panoiu
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Publication number: 20120177080Abstract: Devices for generating a laser beam are disclosed. The devices include a silicon micro ring having at least one silicon optical waveguide disposed at a distance from the micro ring. The radius and the cross-sectional dimension of the micro ring, the cross-sectional dimension of the waveguide, and the distance between the micro ring and the waveguide are determined such that one or more pairs of whispering gallery mode resonant frequencies of the micro ring are separated by an optical phonon frequency of silicon. Methods of manufacturing a lasing device including a silicon micro ring coupled with a silicon waveguide are also disclosed.Type: ApplicationFiled: March 13, 2012Publication date: July 12, 2012Inventors: Xiaodong Yang, Chee Wei Wong
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Patent number: 8207002Abstract: Devices for generating a laser beam are disclosed. The devices include a silicon micro ring having at least one silicon optical waveguide disposed at a distance from the micro ring. The radius and the cross-sectional dimension of the micro ring, the cross-sectional dimension of the waveguide, and the distance between the micro ring and the waveguide are determined such that one or more pairs of whispering gallery mode resonant frequencies of the micro ring are separated by an optical phonon frequency of silicon. Methods of manufacturing a lasing device including a silicon micro ring coupled with a silicon waveguide are also disclosed.Type: GrantFiled: August 2, 2011Date of Patent: June 26, 2012Assignee: The Trustees Of Columbia University In The City Of New YorkInventors: Xiaodong Yang, Chee Wei Wong
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Publication number: 20110286489Abstract: Devices for generating a laser beam are disclosed. The devices include a silicon micro ring having at least one silicon optical waveguide disposed at a distance from the micro ring. The radius and the cross-sectional dimension of the micro ring, the cross-sectional dimension of the waveguide, and the distance between the micro ring and the waveguide are determined such that one or more pairs of whispering gallery mode resonant frequencies of the micro ring are separated by an optical phonon frequency of silicon. Methods of manufacturing a lasing device including a silicon micro ring coupled with a silicon waveguide are also disclosed.Type: ApplicationFiled: August 2, 2011Publication date: November 24, 2011Applicant: The Trustees of Columbia University in the City of New YorkInventors: Xiaodong Yang, Chee Wei Wong
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Publication number: 20110249689Abstract: Provided herein are certain embodiments of systems, methods and devices for Raman lasers based on micro-ring and mircro-racetrack resonators, and the manufacturing thereof. For example, a device can be provided which is structured to receive an electro-magnetic radiation including a resonator arrangement which has a distance from one edge thereof to another edge thereof of at most approximately a wavelength of the electro-magnetic radiation that impacts the resonator arrangement. According to some embodiments, the resonator arrangement can be configured to generate a Raman radiation when impacted by a further electro-magnetic radiation. In some embodiments, the resonator arrangement can solely generate the Raman radiation which is lasing, which Raman radiation can be generated by the resonator arrangement in a continuous mode and/or a pulsed lasing mode. The resonator arrangement can generate the Raman radiation which is lasing without a use of an external electrical driver.Type: ApplicationFiled: July 20, 2009Publication date: October 13, 2011Applicant: The Trustees of Columbia University in the City of New YorkInventors: Chee Wei Wong, Xiaodong Yang, James F. McMillan
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Patent number: 8017419Abstract: Methods of manufacturing a lasing device are provided by some embodiments, the methods including: creating a silicon micro ring with a predetermined radius and a predetermined first cross-sectional dimension; creating a silicon waveguide with a predetermined second cross-sectional dimension, the silicon waveguide spaced from the silicon micro ring by a predetermined distance; and wherein the predetermined distance, the predetermined radius, the predetermined first cross-sectional dimension, and the predetermined second cross-sectional dimension are determined so that at least one first whispering gallery mode resonant frequency of the silicon micro ring and at least one second whispering gallery mode resonant frequency of the silicon micro ring are separated by an optical phonon frequency of silicon.Type: GrantFiled: February 25, 2009Date of Patent: September 13, 2011Assignee: The Trustees of Columbia University in the City of New YorkInventors: Xiaodong Yang, Chee Wei Wong
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Publication number: 20110176763Abstract: Systems and methods for sensing properties of a workpiece and embedding a photonic sensor in metal are disclosed herein. In some embodiments, systems for sensing properties of a workpiece include an optical input, a photonic device, an optical detector, and a digital processing device. The optical input provides an optical signal at an output of the optical input. The photonic device is coupled to the workpiece and to the output of the optical input. The photonic device generates an output signal in response to the optical signal, wherein at least one of an intensity of the output signal and a wavelength of the output signal depends on at least one of thermal characteristics and mechanical characteristics of the workpiece. The optical detector receives the output signal from the photonic device and is configured to generate a corresponding electronic signal.Type: ApplicationFiled: October 15, 2010Publication date: July 21, 2011Applicant: The Trustees of Columbia University in the City of New YorkInventors: Chee Wei Wong, Rohit Chatterjee, Xiaochun Li, Xugang Zhang
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Publication number: 20110147344Abstract: Devices and methods for providing stimulated Raman lasing are provided. In some embodiments, devices include a photonic crystal that includes a layer of silicon having a lattice of holes and a linear defect that forms a waveguide configured to receive pump light and output Stokes light through Raman scattering, wherein the thickness of the layer of silicon, the spacing of the lattice of holes, and the size of the holes are dimensioned to provide Raman lasing. In some embodiments, methods include forming a layer of silicon, and etching the layer of silicon to form a lattice of holes with a linear defect that forms a waveguide configured to receive pump light and output Stokes light through Raman scattering, wherein the thickness of the layer of silicon, the spacing of the lattice of holes, and the size of the holes are dimensioned to provide Raman lasing.Type: ApplicationFiled: November 17, 2010Publication date: June 23, 2011Applicant: The Trustees of Columbia University in The City of New YorkInventors: Chee Wei Wong, James F. McMillan, Xiaodong Yang, Richard Osgood, JR., Jerry Dadap, Nicolae Panoiu
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Patent number: 7869470Abstract: Devices and methods for providing stimulated Raman lasing are provided. In some embodiments, devices include a photonic crystal that includes a layer of silicon having a lattice of holes and a linear defect that forms a waveguide configured to receive pump light and output Stokes light through Raman scattering, wherein the thickness of the layer of silicon, the spacing of the lattice of holes, and the size of the holes are dimensioned to provide Raman lasing. In some embodiments, methods include forming a layer of silicon, and etching the layer of silicon to form a lattice of holes with a linear defect that forms a waveguide configured to receive pump light and output Stokes light through Raman scattering, wherein the thickness of the layer of silicon, the spacing of the lattice of holes, and the size of the holes are dimensioned to provide Raman lasing.Type: GrantFiled: August 31, 2006Date of Patent: January 11, 2011Assignee: The Trustees of Columbia University in the City of New YorkInventors: Chee Wei Wong, James F. McMillan, Xiaodong Yang, Richard Osgood, Jr., Jerry Dadap, Nicolae C. Panoiu
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Patent number: 7840099Abstract: An optical modulator structure includes at least two waveguide structures for inputting and outputting an optical signal. At least one ring resonator structure provides coupling between the at least two waveguide structures. The at least one ring resonator structure includes Ge or SiGe.Type: GrantFiled: January 18, 2007Date of Patent: November 23, 2010Assignee: Massachusetts Institute of TechnologyInventors: Dong Pan, Jifeng Liu, Lionel C. Kimerling, James F. McMillan, Michael D. Sockin, Chee Wei Wong
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Patent number: 7840101Abstract: Systems and methods for sensing properties of a workpiece and embedding a photonic sensor in metal are disclosed herein. In some embodiments, systems for sensing properties of a workpiece include an optical input, a photonic device, an optical detector, and a digital processing device. The optical input provides an optical signal at an output of the optical input. The photonic device is coupled to the workpiece and to the output of the optical input. The photonic device generates an output signal in response to the optical signal, wherein at least one of an intensity of the output signal and a wavelength of the output signal depends on at least one of thermal characteristics and mechanical characteristics of the workpiece. The optical detector receives the output signal from the photonic device and is configured to generate a corresponding electronic signal.Type: GrantFiled: January 3, 2007Date of Patent: November 23, 2010Assignee: The Trustees of Columbia University in the City of New YorkInventors: Chee Wei Wong, Rohit Chatterjee, Xiaochun Li, Xugang Zhang
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Publication number: 20100270481Abstract: Some embodiments of the disclosed subject matter provide systems, devices, and methods for tuning resonant wavelengths of an optical resonator. Some embodiments of the disclosed subject matter provide systems, devices, and methods for tuning dispersion properties of photonic crystal waveguides. In some embodiments, methods for tuning a resonant wavelength of an optical resonator are provided, the methods including: providing an optical resonator having a surface; determining an initial resonant wavelength emitted by the optical resonator in response to an electromagnetic radiation input; determining a number of layers of dielectric material based on a difference between the initial resonant wavelength and a target resonant wavelength and a predetermined tuning characteristic; and applying the determined number of layers of dielectric material to the surface of the optical resonator to tune the initial resonant wavelength to a tuned resonant wavelength.Type: ApplicationFiled: June 16, 2008Publication date: October 28, 2010Applicant: Columbia UniversityInventors: Chee Wei Wong, Xiaodong Yang, Charlton Chen, Chad Husko
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Publication number: 20090269002Abstract: Systems and methods for sensing properties of a workpiece and embedding a photonic sensor in metal are disclosed herein. In some embodiments, systems for sensing properties of a workpiece include an optical input, a photonic device, an optical detector, and a digital processing device. The optical input provides an optical signal at an output of the optical input. The photonic device is coupled to the workpiece and to the output of the optical input. The photonic device generates an output signal in response to the optical signal, wherein at least one of an intensity of the output signal and a wavelength of the output signal depends on at least one of thermal characteristics and mechanical characteristics of the workpiece. The optical detector receives the output signal from the photonic device and is configured to generate a corresponding electronic signal.Type: ApplicationFiled: January 3, 2007Publication date: October 29, 2009Inventors: Chee Wei Wong, Rohit Chatterjee, Xiaochun Li, Xugang Zhang
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Publication number: 20090191657Abstract: Methods of manufacturing a lasing device are provided by some embodiments, the methods including: creating a silicon micro ring with a predetermined radius and a predetermined first cross-sectional dimension; creating a silicon waveguide with a predetermined second cross-sectional dimension, the silicon waveguide spaced from the silicon micro ring by a predetermined distance; and wherein the predetermined distance, the predetermined radius, the predetermined first cross-sectional dimension, and the predetermined second cross-sectional dimension are determined so that at least one first whispering gallery mode resonant frequency of the silicon micro ring and at least one second whispering gallery mode resonant frequency of the silicon micro ring are separated by an optical phonon frequency of silicon.Type: ApplicationFiled: February 25, 2009Publication date: July 30, 2009Applicant: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORKInventors: Xiaodong Yang, Chee Wei Wong