Search Patents
  • Optical structure on an optical fiber and method of fabrication
    Patent number: 8249400
    Abstract: An optical structure on an optical fiber and a method of fabrication is provided. The optical structure includes an end of an optical fiber and a layer formed on the end of the optical fiber. The layer comprises one or more first portions having a first optical pathlength in a direction perpendicular to the layer and one or more second portions having a second optical pathlength in the direction perpendicular to the layer, the second optical pathlength different from the first optical pathlength.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: August 21, 2012
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Michel J. F. Digonnet, Gordon S. Kino, Olav Solgaard, Shrestha Basu Mallick, Onur Can Akkaya
  • Multi-wavelength cross-connect optical switch
    Publication number: 20010009596
    Abstract: A cross-connect switch for fiber-optic communication networks employing a wavelength dispersive element, such as a grating, and a stack of regular (non-wavelength selective) cross bar switches using two-dimensional arrays of micromachined, electrically actuated, individually-tiltable, controlled deflection micro-mirrors for providing multiport switching capability for a plurality of wavelengths. Using a one-dimensional micromirror array, a fiber-optic based MEMS switched spectrometer that does not require mechanical motion of bulk components or large diode arrays can be constructed with readout capability for WDM network diagnosis or for general purpose spectroscopic applications.
    Type: Application
    Filed: January 19, 2001
    Publication date: July 26, 2001
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • Optical structure on an optical fiber and method of fabrication
    Publication number: 20100092125
    Abstract: An optical structure on an optical fiber and a method of fabrication is provided. The optical structure includes an end of an optical fiber and a layer formed on the end of the optical fiber. The layer comprises one or more first portions having a first optical pathlength in a direction perpendicular to the layer and one or more second portions having a second optical pathlength in the direction perpendicular to the layer, the second optical pathlength different from the first optical pathlength.
    Type: Application
    Filed: October 8, 2009
    Publication date: April 15, 2010
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Michel J.F. Digonnet, Gordon S. Kino, Olav Solgaard, Shrestha Basu Mallick, Onur Can Akkaya
  • Multi-wavelength cross-connect optical switch
    Publication number: 20020061160
    Abstract: A cross-connect switch for fiber-optic communication networks employing a wavelength dispersive element, such as a grating, and a stack of regular (non-wavelength selective) cross bar switches using two-dimensional arrays of micromachined, electrically actuated, individually-tiltable, controlled deflection micro-mirrors for providing multiport switching capability for a plurality of wavelengths. Using a one-dimensional micromirror array, a fiber-optic based MEMS switched spectrometer that does not require mechanical motion of bulk components or large diode arrays can be constructed with readout capability for WDM network diagnosis or for general purpose spectroscopic applications.
    Type: Application
    Filed: August 10, 2001
    Publication date: May 23, 2002
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • Multi-wavelength cross-connect optical switch
    Publication number: 20030137660
    Abstract: A cross-connect switch for fiber-optic communication networks employing a wavelength dispersive element, such as a grating, and a stack of regular (non-wavelength selective) cross bar switches using two-dimensional arrays of micromachined, electrically actuated, individually-tiltable, controlled deflection micro-mirrors for providing multiport switching capability for a plurality of wavelengths. Using a one-dimensional micromirror array, a fiber-optic based MEMS switched spectrometer that does not require mechanical motion of bulk components or large diode arrays can be constructed with readout capability for WDM network diagnosis or for general purpose spectroscopic applications.
    Type: Application
    Filed: November 12, 2002
    Publication date: July 24, 2003
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • Photonic Crystal Reflectors / Filters and Displacement Sensing Applications
    Publication number: 20060280403
    Abstract: We introduce a mechanically tunable photonic crystal structure consisting of coupled photonic crystal slabs. Using both analytic theory, and first-principles finite-difference time-domain simulations, we demonstrate that the transmission and reflection coefficients for light normally incident upon such structures can be highly sensitive to nano-scale variations in the spacing between the slabs. Moreover, by specifically configuring the photonic crystal structures, the high sensitivity can be preserved in spite of significant fabrication-related disorders. We expect such a structure to play important roles in micro-mechanically tunable optical sensors and filters.
    Type: Application
    Filed: August 15, 2006
    Publication date: December 14, 2006
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Wonjoo Suh, Mehmet Yanik, Olav Solgaard, Shanhui Fan
  • Gyroscope utilizing MEMS and optical sensing
    Patent number: 8269976
    Abstract: A gyroscope and a method of detecting rotation are provided. The gyroscope includes a structure configured to be driven to move about a drive axis. The structure is further configured to move about a sense axis in response to a Coriolis force generated by rotation of the structure about a rotational axis while moving about the drive axis. The gyroscope further includes an optical sensor system configured to optically measure movement of the structure about the sense axis. In certain embodiments, the gyroscope is a microelectromechanical system (MEMS) gyroscope.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: September 18, 2012
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Michel J. F. Digonnet, Gordon S. Kino, Olav Solgaard
  • PHASE-FRONT-MODULATION SENSOR
    Publication number: 20190094066
    Abstract: A sensor is provided. The sensor includes at least one optical waveguide and an optical reflector. The optical reflector is optically coupled to the at least one optical waveguide and includes a first portion and a second portion. The first portion is configured to reflect a first portion of light back to the at least one optical waveguide. The second portion is configured to reflect a second portion of light back to the at least one optical waveguide. The reflected second portion of the light differs in phase from the reflected first portion of the light by a phase difference that is not substantially equal to an integer multiple of ? when the second portion of the optical reflector is in an equilibrium position in absence of the perturbation.
    Type: Application
    Filed: September 24, 2018
    Publication date: March 28, 2019
    Inventors: Michel J.F. Digonnet, Onur Kilic, Wonuk Jo, Olav Solgaard, Behrad Habib Afshar
  • Multi-wavelength cross-connect optical switch
    Publication number: 20010022876
    Abstract: A cross-connect switch for fiber-optic communication networks employing a wavelength dispersive element, such as a grating, and a stack of regular (non-wavelength selective) cross bar switches using two-dimensional arrays of micromachined, electrically actuated, individually-tiltable, controlled deflection micromirrors for providing multiport switching capability for a plurality of wavelengths. Using a one-dimensional micromirror array, a fiber-optic based MEMS switched spectrometer that does not require mechanical motion of bulk components or large diode arrays can be constructed with readout capability for WDM network diagnosis or for general purpose spectroscopic applications.
    Type: Application
    Filed: May 4, 2001
    Publication date: September 20, 2001
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • High-sensitivity fiber-compatible optical acoustic sensor
    Patent number: 7526148
    Abstract: An acoustic sensor includes at least one photonic crystal structure having at least one optical resonance with a resonance frequency and a resonance lineshape. The acoustic sensor further includes a housing substantially surrounding the at least one photonic crystal structure and mechanically coupled to the at least one photonic crystal structure. At least one of the resonance frequency and the resonance lineshape is responsive to acoustic waves incident upon the housing.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: April 28, 2009
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Olav Solgaard, Michel J. F. Digonnet, Gordon S. Kino
  • Photonic crystal reflectors/filters and displacement sensing applications
    Publication number: 20040080726
    Abstract: We introduce a mechanically tunable photonic crystal structure consisting of coupled photonic crystal slabs. Using both analytic theory, and first-principles finite-difference time-domain simulations, we demonstrate that the transmission and reflection coefficients for light normally incident upon such structures can be highly sensitive to nano-scale variations in the spacing between the slabs. Moreover, by specifically configuring the photonic crystal structures, the high sensitivity can be preserved in spite of significant fabrication-related disorders. We expect such a structure to play important roles in micro-mechanically tunable optical sensors and filters.
    Type: Application
    Filed: October 8, 2003
    Publication date: April 29, 2004
    Inventors: Wonjoo Suh, M. F. Yanik, Olav Solgaard, Shanhui Fan
  • Atomic force microscope using a torsional harmonic cantilever
    Patent number: 7404314
    Abstract: An atomic force microscope based apparatus for examining a sample includes a cantilever having a cantilever arm and a probe tip where the probe tip is offset laterally from a longitudinal axis of torsion of the cantilever arm, an oscillator that drives the cantilever into oscillation in a flexural mode to cause the probe tip to repeatedly interact with the sample where the tip-sample interaction of the laterally offset probe tip excites torsional motion of the cantilever, and a detection system that detects torsional motion of the cantilever in response to the tip-sample interaction.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: July 29, 2008
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Ozgur Sahin, Calvin F. Quate, Olav Solgaard
  • Optical-fiber-compatible acoustic sensor
    Patent number: 8542956
    Abstract: An acoustic sensor includes a diaphragm having a reflective element. The sensor has an optical fiber positioned relative to the reflective element such that light emitted from the optical fiber is reflected by the reflective element. A first end of the optical fiber and the reflective element form an optical cavity therebetween. The acoustic sensor further includes a structural element mechanically coupled to the diaphragm and the optical fiber. The structural element includes a material having a coefficient of thermal expansion substantially similar to the coefficient of thermal expansion of the optical fiber. For example, the material can be silica.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: September 24, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Can Akkaya, Michel J. F. Digonnet, Onur Kilic, Gordon S. Kino, Olav Solgaard
  • OPTICAL-FIBER-COMPATIBLE ACOUSTIC SENSOR
    Publication number: 20110268384
    Abstract: An acoustic sensor includes a diaphragm having a reflective element. The sensor has an optical fiber positioned relative to the reflective element such that light emitted from the optical fiber is reflected by the reflective element. A first end of the optical fiber and the reflective element form an optical cavity therebetween. The acoustic sensor further includes a structural element mechanically coupled to the diaphragm and the optical fiber. The structural element includes a material having a coefficient of thermal expansion substantially similar to the coefficient of thermal expansion of the optical fiber. For example, the material can be silica.
    Type: Application
    Filed: March 14, 2011
    Publication date: November 3, 2011
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Can Akkaya, Michel J.F. Digonnet, Onur Kilic, Gordon S. Kino, Olav Solgaard
  • GYROSCOPE UTILIZING TORSIONAL SPRINGS AND OPTICAL SENSING
    Publication number: 20140130597
    Abstract: A gyroscope and a method of detecting rotation are provided. The gyroscope includes a structure configured to be driven to move about a drive axis. The structure is further configured to move about a sense axis in response to a Coriolis force generated by rotation of the structure about a rotational axis while moving about the drive axis. The structure further includes at least one first torsional spring extending generally along the drive axis and at least one second torsional spring extending generally along the sense axis. The gyroscope further includes an optical sensor system configured to optically measure movement of the structure about the sense axis.
    Type: Application
    Filed: January 22, 2014
    Publication date: May 15, 2014
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Michel J.F. Digonnet, Gordon S. Kino, Olav Solgaard
  • Rapid axial scanning for light sheet microscopy using a phased array
    Patent number: 11619585
    Abstract: An axially swept light sheet fluorescence microscope has illumination optics capable scanning the focus region of a line beam along an illumination optical axis to illuminate a light sheet in a sample plane, and detection optics capable of collecting fluorescence light from the sample plane and imaging the collected light on a light detector with a rolling shutter. A microcontroller synchronizes the rolling shutter with the scanning of the focus region. The illumination optics performs the axial scanning using a linear phased array of independently controllable electrostatically driven optical elements controlled by the microcontroller.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: April 4, 2023
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Joseph R. Landry, Olav Solgaard, Stephen S. Hamann
  • Method of detecting an acceleration
    Patent number: 8537368
    Abstract: A method detects an acceleration. The method includes providing a spatial mode filter positioned such that light emitted from the spatial mode filter is reflected by at least a portion of a reflective surface. The spatial mode filter and the portion of the reflective surface form an optical resonator having an optical resonance with a resonance lineshape. The method further includes emitting light from the spatial mode filter and irradiating the portion of the reflective surface. The portion of the reflective surface is responsive to acceleration of the optical resonator by changing curvature. The method further includes measuring a change of the resonance lineshape due to the acceleration of the optical resonator.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: September 17, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Michel J. F. Digonnet, Gordon S. Kino, Olav Solgaard
  • Guided resonance dielectric filter systems
    Publication number: 20060050394
    Abstract: We theoretically introduce a new type of optical all-pass filter based on guided resonance in coupled photonic crystal slabs. The filter exhibits near-complete transmission for both on- and off-resonant frequencies and yet generates large resonant group delay. We further show that such a filter can be mechanically switched into a flat-top band rejection filter. We also show that a single photonic crystal slab can also function either as optical all-pass transmission or flattop reflection filter for normally incident light. Both filter functions are synthesized by designing the spectral properties of guided resonance in the slab. The structure is extremely compact along the vertical direction.
    Type: Application
    Filed: September 8, 2004
    Publication date: March 9, 2006
    Inventors: Wonjoo Suh, Olav Solgaard, Shanhui Fan
  • PHASE-FRONT-MODULATION SENSOR AND METHOD OF FABRICATION
    Publication number: 20160245687
    Abstract: A sensor and a method of fabrication are provided. The sensor includes at least one optical waveguide and an optical reflector. The optical reflector is optically coupled to the at least one optical waveguide and includes a first portion and a second portion. The first portion is configured to reflect a first portion of light back to the at least one optical waveguide. The second portion is configured to reflect a second portion of light back to the at least one optical waveguide. The reflected second portion of the light differs in phase from the reflected first portion of the light by a phase difference that is not substantially equal to an integer multiple of ? when the second portion of the optical reflector is in an equilibrium position in absence of the perturbation.
    Type: Application
    Filed: February 19, 2016
    Publication date: August 25, 2016
    Inventors: Michel J.F. Digonnet, Onur Kilic, Wonuk Jo, Olav Solgaard, Behrad Habib Afshar
  • METHOD OF DETECTING A TOPOLOGY OF A REFLECTIVE SURFACE
    Publication number: 20120182557
    Abstract: A method detects a topology of a reflective surface. The method includes providing an optical fiber positioned such that light emitted from the optical fiber is reflected by at least a portion of the reflective surface. The optical fiber and the portion of the reflective surface form an optical resonator having an optical resonance with a resonance lineshape. The method further includes emitting light from the optical fiber while the optical fiber is at a plurality of positions along the reflective surface. The light emitted from the optical fiber irradiates a corresponding plurality of portions of the reflective surface. The method further includes measuring a change of the resonance lineshape due to the irradiation of the plurality of portions of the reflective surface.
    Type: Application
    Filed: January 23, 2012
    Publication date: July 19, 2012
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Michel J.F. Digonnet, Gordon S. Kino, Olav Solgaard
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