Search Patents
  • METHOD OF FABRICATING AN OPTICAL-FIBER-COMPATIBLE SENSOR
    Publication number: 20130340232
    Abstract: A method for fabricating a sensor is provided, with the sensor including a reflective element and an optical fiber positioned relative to the reflective element such that light emitted from the optical fiber is reflected by the reflective element and propagates in an optical cavity between the optical fiber and the reflective element. The method includes positioning an element within the optical cavity. The element has a coefficient of thermal expansion and a thickness that compensate a refractive index change with temperature of a medium within the optical cavity.
    Type: Application
    Filed: August 21, 2013
    Publication date: December 26, 2013
    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
  • Atomic Force Microscope Using A Torsional Harmonic Cantilever
    Publication number: 20080041143
    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: Application
    Filed: October 23, 2007
    Publication date: February 21, 2008
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Ozgur Sahin, Calvin Quate, Olav Solgaard
  • Dielectric laser electron accelerators
    Patent number: 9214782
    Abstract: A laser-driven dielectric electron accelerator is composed of a dielectric photonic crystal accelerator structure having an electron beam channel and buried grating whose elements are arranged linearly parallel to the electron beam channel. The accelerator structure preferably has a thin film material coating. The grating may have an asymmetric structure. The accelerator and undulator structures may be integrated with on-chip optical and electronic devices such as waveguide devices and control circuits so that multiple devices can be fabricated on the same chip.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: December 15, 2015
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Olav Solgaard, Chia Ming Chang
  • PHOTONIC CRYSTAL STRUCTURE SENSOR
    Publication number: 20080226217
    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: Application
    Filed: January 9, 2008
    Publication date: September 18, 2008
    Inventors: Onur Kilic, Michel J.F. Digonnet, Gordon S. Kino, Olav Solgaard
  • Optical-fiber-compatible sensor
    Patent number: 9702755
    Abstract: A sensor is provided, with the sensor including a reflective element and an optical fiber positioned relative to the reflective element such that light emitted from the optical fiber is reflected by the reflective element and propagates in an optical cavity between the optical fiber and the reflective element. A first material is within the optical cavity and has a coefficient of thermal expansion and a thickness that compensate a refractive index change with temperature of a second material within the optical cavity.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: July 11, 2017
    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
  • Adaptive optical signal processing with multimode waveguides
    Patent number: 7844144
    Abstract: Optical signals are passed in an optical medium using an approach that facilitates the mitigation of interference. According to an example embodiment, a filtering-type approach is used with an optical signal conveyed in an optical fiber, such as a multimode fiber (MMF) or a multimode waveguide. Adaptive spatial domain signal processing, responsive to a feedback signal indicative of data conveyed in the multimode waveguide, is used to mitigate interference in optical signals conveyed in the multimode waveguide.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: November 30, 2010
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Joseph M. Kahn, Mark A. Horowitz, Olav Solgaard, Shanhui Fan
  • High speed random access variable focusing and steering of a patterned line
    Patent number: 11131845
    Abstract: A patterned line of optical radiation can be steered in the other two directions (e.g., line patterned in y, steered in x and z) with a 1-D phase shifter array in a Fourier optics configuration. Preferably the patterned line is provided by forming a line focus and modulating it with an array of grating light valve devices in an amplitude modulation configuration. Phase modulation is preferably provided with an array of grating light valve devices in a phase modulation configuration.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: September 28, 2021
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Stephen S. Hamann, Olav Solgaard
  • ACOUSTIC SENSOR WITH AT LEAST ONE PHOTONIC CRYSTAL SLAB
    Publication number: 20110041616
    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: Application
    Filed: September 1, 2010
    Publication date: February 24, 2011
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Olav Solgaard, Michel J.F. Digonnet, Gordon S. Kino
  • Optical displacement sensor element
    Patent number: 7184368
    Abstract: The invention relates an optical displacement sensor element comprising two essentially flat surfaces (1,2) being separated by a cavity defined by a spacer (5) and the surfaces (1,2), the distance between the surfaces being variable, wherein a first of said surfaces (1) is positioned on an at least partially transparent carrier (3) and being provided with a reflective pattern, the pattern constituting a pattern being shaped as a diffractive lens, and said second surface (2) being a reflective surface.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: February 27, 2007
    Assignee: Sinvent AS
    Inventors: Ib-Rune Johansen, Olav Solgaard, Odd Løvhaugen, Håkon Sagberg, Henrik Rogne, Dag Wang
  • MONOLITHIC INTERFEROMETRIC ATOMIC FORCE MICROSCOPY DEVICE
    Publication number: 20140130214
    Abstract: A fiber-facet AFM probe enabling high-resolution, high sensitivity measurement of a sample surface is presented. AFM probes in accordance with the present invention include an optically resonant cavity that is defined by two mirrors, at least one of which is a photonic-crystal mirror. One of the mirrors is movable and is mechanically coupled with an AFM tip such that a force imparted on the tip by an interaction with the sample surface induces a change in the cavity length of the optically resonant cavity and, therefore, its reflectivity.
    Type: Application
    Filed: March 15, 2013
    Publication date: May 8, 2014
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Olav Solgaard, Antonio A. Gellineau, Xuan Wu, Jo Wonuk, Karthik Vijayraghavan
  • Simultaneous measurements of gradients in optical networks
    Publication number: 20220327369
    Abstract: Improved training of optical neural networks is provided. In one example: 1) we choose input and target vectors, we program those into an input vector generator and a measurement unit, respectively, we turn on the optical input source power, and we monitor the electrical signal representing the cost function. 2) we can then modulate two or more controllable elements inside the optical network at different frequencies and look for the size and sign of the corresponding distinct AC variations in the measured cost function, simultaneously giving us the gradients with respect to each element.
    Type: Application
    Filed: September 9, 2020
    Publication date: October 13, 2022
    Inventors: Shanhui Fan, Tyler William Hughes, David A.B. Miller, Sunil K. Pai, Olav Solgaard, Ian A.D. Williamson
  • Multi-wavelength cross-connect optical switch
    Publication number: 20030133095
    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 17, 2003
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • Longitudinally graded index lens
    Publication number: 20120113637
    Abstract: 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: Application
    Filed: October 26, 2011
    Publication date: May 10, 2012
    Inventors: Olav Solgaard, Reinhold Dauskardt, Nina Vaidya
  • High-sensitivity fiber-compatible optical acoustic sensor
    Patent number: 7809219
    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 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: February 11, 2009
    Date of Patent: October 5, 2010
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Olav Solgaard, Michel J. F. Digonnet, Gordon S. Kino
  • STRUCTURED ILLUMINATION IN INVERTED LIGHT SHEET MICROSCOPY
    Publication number: 20180321479
    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: Application
    Filed: December 15, 2017
    Publication date: November 8, 2018
    Inventors: Joseph Russell Landry, Ryosuke Itoh, Michael J. Mandella, Olav Solgaard
  • Method of fabricating an optical-fiber-compatible sensor
    Patent number: 8897610
    Abstract: A method for fabricating a sensor is provided, with the sensor including a reflective element and an optical fiber positioned relative to the reflective element such that light emitted from the optical fiber is reflected by the reflective element and propagates in an optical cavity between the optical fiber and the reflective element. The method includes positioning an element within the optical cavity. The element has a coefficient of thermal expansion and a thickness that compensate a refractive index change with temperature of a medium within the optical cavity.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: November 25, 2014
    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
  • Multi-wavelength cross-connect optical switch
    Publication number: 20050058393
    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: August 2, 2004
    Publication date: March 17, 2005
    Inventors: Olav Solgaard, Jonathan Heritage, Amal Bhattarai
  • Rapid axial scanning for light sheet microscopy using a phased array
    Publication number: 20200371032
    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: Application
    Filed: May 14, 2020
    Publication date: November 26, 2020
    Inventors: Joseph R. Landry, Olav Solgaard, Stephen S. Hamann
  • Multi-wavelength cross-connect optical switch
    Publication number: 20020012489
    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: March 20, 2001
    Publication date: January 31, 2002
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
  • Multi-wavelength cross-connect optical switch
    Publication number: 20010014196
    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: February 8, 2001
    Publication date: August 16, 2001
    Inventors: Olav Solgaard, Jonathan P. Heritage, Amal R. Bhattarai
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