Search Patents
  • Acoustic sensor with at least one photonic crystal slab
    Patent number: 8160406
    Abstract: An acoustic sensor includes at least one structure including at least one photonic crystal slab and an optical fiber optically coupled to the at least one photonic crystal slab, and having at least one optical resonance with a resonance frequency and a resonance lineshape. The acoustic sensor further includes a housing mechanically coupled to the at least one structure. At least one of the resonance frequency and the resonance lineshape is responsive to acoustic waves incident upon the housing.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: April 17, 2012
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Olav Solgaard, Michel J. F. Digonnet, Gordon S. Kino
  • GYROSCOPE UTILIZING TORSIONAL SPRINGS AND OPTICAL SENSING
    Publication number: 20120300214
    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: August 9, 2012
    Publication date: November 29, 2012
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Michel J.F. Digonnet, Gordon S. Kino, Olav Solgaard
  • Multi-wavelength cross-connect optical switch
    Patent number: 6097859
    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: Grant
    Filed: February 12, 1998
    Date of Patent: August 1, 2000
    Assignee: The Regents of the University of California
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • Multi-wavelength cross-connect optical switch
    Patent number: 6834136
    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: Grant
    Filed: March 20, 2001
    Date of Patent: December 21, 2004
    Assignee: The Regents of the University of California
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • Multi-wavelength cross-connect optical switch
    Patent number: 6819823
    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: Grant
    Filed: May 4, 2001
    Date of Patent: November 16, 2004
    Assignee: The Regents of the University of California
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • Detection of macromolecular complexes on ultraflat surfaces with harmonic cantilevers
    Publication number: 20090227040
    Abstract: Method and apparatus which uses harmonic cantilevers, such as used in atomic force microscopy, to detect variations in the attractive and repulsive forces on a solid surface as a result of macromolecular binding, for example, hybridization of a single stranded DNA molecule attached to the surface with another DNA molecule. The complexed macromolecule is less flexible than an uncomplexed molecule. It will typically have more negative charge due to amino acids or DNA monomers. Both stiffness of the surface and the attractive capillary forces will change after binding and may be detected. The present methods and materials enable ultraflat surfaces for the macromolecule deposition, and may include the use of a gold-coated mica substrate and a self-assembling monolayer.
    Type: Application
    Filed: October 24, 2007
    Publication date: September 10, 2009
    Inventors: Ozgur Sahin, Calvin F. Quate, Olav Solgaard, Henrik H. J. Persson
  • Multi-wavelength cross-connect optical switch
    Patent number: 6922239
    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: Grant
    Filed: November 12, 2002
    Date of Patent: July 26, 2005
    Assignee: The Regents of the University of California
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • Multi-wavelength cross-connect optical switch
    Patent number: 6389190
    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: Grant
    Filed: January 19, 2001
    Date of Patent: May 14, 2002
    Assignee: The Regents of the University of California
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • Multi-wavelength cross-connect optical switch
    Patent number: 6711320
    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: Grant
    Filed: November 12, 2002
    Date of Patent: March 23, 2004
    Assignee: The Regents of the University of California
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • Method of detecting a topology of a reflective surface
    Patent number: 8373865
    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: Grant
    Filed: January 23, 2012
    Date of Patent: February 12, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Michel J. F. Digonnet, Gordon S. Kino, Olav Solgaard
  • Torsional Harmonic Cantilevers For Detection Of High Frequency Force Components In Atomic Force Microscopy
    Publication number: 20060236757
    Abstract: A method for measuring high frequency force of interaction between a tip of a cantilever and a sample includes providing a cantilever having a cantilever arm and a probe tip formed on a free end of the cantilever arm where the cantilever arm has a first shape and an axis of torsion associated with the first shape and the probe tip is positioned in an offset displacement from the axis of torsion, vibrating the cantilever at or near the fundamental flexural resonance frequency with a predetermined oscillation amplitude, bringing the cantilever to the vicinity of the sample, tapping the surface of the sample repeatedly using the probe tip, and detecting changes in the amplitude or the phase of a high frequency vibration harmonic of the cantilever as the cantilever is deflected in response to features on the surface of the sample.
    Type: Application
    Filed: July 11, 2006
    Publication date: October 26, 2006
    Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Ozgur Sahin, Calvin Quate, Olav Solgaard
  • Multi-wavelength cross-connect optical switch
    Patent number: 6374008
    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: Grant
    Filed: February 8, 2001
    Date of Patent: April 16, 2002
    Assignee: The Regents of the University of California
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • Photonic crystal structure sensor
    Patent number: 7630589
    Abstract: An acoustic sensor and a method of fabricating an acoustic sensor are provided. The acoustic sensor includes at least one photonic crystal structure and an optical fiber having an end optically coupled to the at least one photonic crystal structure. The acoustic sensor further includes a structural portion mechanically coupled to the at least one photonic crystal structure and to the optical fiber. The at least one photonic crystal structure, the optical fiber, and the structural portion substantially bound a region having a volume such that a frequency response of the acoustic sensor is generally flat in a range of acoustic frequencies.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: December 8, 2009
    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
  • Longitudinally graded index lens
    Patent number: 9329308
    Abstract: An Axially Graded Index LEns (AGILE) is provided. Such optical elements can provide optical concentration in excess of the free-space brightness theorem limit, because of the increased refractive index at the output of the concentrator compared to the input. Optical contact (i.e., no intervening low index material) between the AGILE and the absorbing element (or an optical source) can be employed to ensure no loss of brightness at the interface between the AGILE and the absorbing element (or source). Although solar cell concentration is a significant application of this technology, there are various other applications, such as increasing the efficiency of optical emission, and providing transmissive optical windows that include optically cloaked regions.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: May 3, 2016
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Olav Solgaard, Reinhold Dauskardt, Nina Vaidya
  • Structured illumination in inverted light sheet microscopy
    Patent number: 10401605
    Abstract: A system, including a structured illumination stage to provide a spatially modulated imaging field is provided. The system further includes a spatial frequency modulation stage to adjust the frequency of the spatially modulated imaging field, a sample interface stage to direct the spatially modulated imaging field to a sample, and a sensor configured to receive a plurality of fluorescence emission signals from the sample. The system also includes a processor configured to reduce a sample scattering signal and to provide a fluorescence emission signal from a portion of the sample including the spatially modulated imaging field. A method for using the above system to form an image of the sample is also provided.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: September 3, 2019
    Assignees: SCREEN HOLDINGS, CO., LTD., THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Joseph Russell Landry, Ryosuke Itoh, Michael J. Mandella, Olav Solgaard
  • Phase-front-modulation sensor
    Patent number: 10495508
    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: Grant
    Filed: September 24, 2018
    Date of Patent: December 3, 2019
    Assignee: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Michel J. F. Digonnet, Onur Kilic, Wonuk Jo, Olav Solgaard, Behrad Habib Afshar
  • Gyroscope utilizing torsional springs and optical sensing
    Patent number: 8885170
    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: Grant
    Filed: January 22, 2014
    Date of Patent: November 11, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Michel J. F. Digonnet, Gordon S. Kino, Olav Solgaard
  • Gyroscope utilizing torsional springs and optical sensing
    Patent number: 8711363
    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: Grant
    Filed: August 9, 2012
    Date of Patent: April 29, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Michel J. F. Digonnet, Gordon Kino, Olav Solgaard
  • Multi-wavelength cross-connect optical switch
    Patent number: 6327398
    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: Grant
    Filed: December 21, 2000
    Date of Patent: December 4, 2001
    Assignee: The Regents of the University of California
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • Multi-wavelength cross-connect optical switch
    Patent number: 6289145
    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: Grant
    Filed: July 18, 2000
    Date of Patent: September 11, 2001
    Assignee: The Regents of the University of California
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
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