Directional Optical Modulation Within An Optical Waveguide Patents (Class 385/4)
  • Patent number: 10025089
    Abstract: A display system produces three-dimensional images. The display system includes a waveguide, and a light source that injects light into the waveguide. A switchable grating allows individual positions in the grating in a two-dimensional array to be turned on and off. A controller configured to spatially modulate the switchable grating so as to control where light exits the waveguide. An eye tracking module tracks eye position of a viewer. The controller uses the eye position to control switching of the grating.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: July 17, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Adrian Travis
  • Patent number: 9755753
    Abstract: According to the present invention, a monolithically integrated laser 102, also referred to herein as a U-laser 102, or integrated dual optical emission laser 102, having a first optical emission 104 and a second optical emission 106 where both the first and second optical emissions 104, 106 of the monolithically integrated laser 102 are in optical communication with a modulator 108 or other device is provided. The integrated dual emission laser 102 can be formed with a light bending portion 134 in variety of configurations including a waveguide in the form of a U-shape, or total internal reflection (TIR) mirrors, curved waveguides, and free-space etched gap mirrors. The integrated dual optical emission laser 102 can also have two laser gain sections 130, 148, one on each arm of the laser 102 to control gain.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: September 5, 2017
    Assignee: OE SOLUTIONS AMERICA, INC.
    Inventor: Daniel Jacob Blumenthal
  • Patent number: 9513440
    Abstract: Actuator systems (10) are provided for inducing one or more static deflections, such as bends, in optical waveguides (12), to alter spectral characteristics of an optical signal transmitted through the waveguide. The actuator systems (10) can include actuators (28) that deflect the waveguide (12), and a controller (40) that controls the actuators (28) so that the deflections in the waveguide (12) are tailored to produce desired spectral characteristics in the optical signal. The actuator systems (10) can be used in conjunction with, for example, a fused fiber optic coupler (12) to form a wavelength selective switch. The actuator systems (10) can be used in conjunction with other types of waveguides to form other types of optical signal processors (14).
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: December 6, 2016
    Assignee: Harris Corporation
    Inventors: Timothy E. Dimmick, Paul B. Koeneman
  • Patent number: 9304031
    Abstract: A weight management mat for passively and automatically monitoring weight for one or more individuals in a household. The weight management mat generally includes a housing having an upper mat and a lower mat between which is sealed a pair of perpendicular sensor arrays. Each sensor array includes fiber optic cables laid out in a grid pattern. One or more microbend inducers act to induce detectable microbends in the fiber optic cables when an individual steps on the upper mat. The change in light intensity caused by these microbends is recorded by photodetectors and processed by a microcontroller. The present invention may be utilized to identify each unique individual stepping on the present invention by the pressure map of their feet. Thus, recorded weight measurements may be tracked to aid in weight management.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: April 5, 2016
    Inventor: Amit Kumar Gupta
  • Patent number: 9223134
    Abstract: This disclosure concerns an interactive head-mounted eyepiece with an integrated processor for handling content for display and an integrated image source for introducing the content to an optical assembly through which the user views a surrounding environment and the displayed content, and an LED lighting system coupled to a light transmissive illumination system of the optical assembly. An optical imperfection of the illumination system directs light from the LED lighting system to uniformly irradiate a reflective image display to produce an image that is reflected through the illumination system to provide the displayed content to the user.
    Type: Grant
    Filed: March 25, 2012
    Date of Patent: December 29, 2015
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Gregory D. Miller, John N. Border, Ralph F. Osterhout
  • Patent number: 9182596
    Abstract: This disclosure concerns an interactive head-mounted eyepiece with an integrated processor for handling content for display and an integrated image source for introducing the content to an optical assembly through which the user views a surrounding environment and the displayed content. The optical assembly includes absorptive polarizers or anti-reflective coatings to reduce stray light.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: November 10, 2015
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: John N. Border, John D. Haddick, Robert Michael Lohse, Ralph F. Osterhout
  • Patent number: 9148220
    Abstract: An optical signal transmission device is used for transmitting optical light rays from a number of light emitters to a number of light receivers, and includes a substrate, a number of first optical waveguide elements, a number of second optical waveguide elements, a number of reflectors, and an integrated circuit. The substrate has a first side surface for positioning the light emitters, and a second side surface for positioning the light receivers. The light emitters and the light receivers are corresponding to the first optical waveguide elements. The second optical waveguide elements intersect with the first optical waveguide elements to form a number of hollow junctions for receiving the reflectors. Each reflector can rotate around a rotating shaft thereof in the corresponding hollow junction to change the optical transmission path of light rays from the light emitters. The integrated circuit controls rotating angles of the reflectors.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: September 29, 2015
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Yi-Zhong Sheu
  • Patent number: 9134534
    Abstract: This disclosure concerns an interactive head-mounted eyepiece with an integrated processor for handling content for display and an integrated image source for introducing the content to an optical assembly through which the user views a surrounding environment and the displayed content. The optical assembly comprises a reflective image display that generates and reflects image light to an optically flat film then to a curved partially reflecting mirror of the optical assembly that reflects a portion of the image light from the image source and transmits a portion of the scene light from a see-through view of the surrounding environment to the user's eye as a combined image. The optical assembly comprises a modular image source, wherein the modular image source is mounted in a frame of the eyepiece such that its position with respect to a user's eye can be adjusted.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: September 15, 2015
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: John N. Border, John D. Haddick, Robert Michael Lohse, Ralph F. Osterhout
  • Patent number: 9110540
    Abstract: The present invention relates to a method and a device for detection of position of touch. The device comprises a waveguide, at least one light source, and at least one detector device. The waveguide has a touch-surface with a surface structure defining a pattern that defines active surface areas and passive surface areas. The pattern is distributed such that an object that contacts a first area will cause a different disturbance of light than an object that contacts a second area, and such that correct positions of a plurality of concurrent touches may be detected.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: August 18, 2015
    Assignee: O-Net Wavetouch Limited
    Inventor: Jørgen Korsgaard Jensen
  • Patent number: 9097891
    Abstract: This disclosure concerns an interactive head-mounted eyepiece with an integrated processor for handling content for display and an integrated image source for introducing the content to an optical assembly through which the user views a surrounding environment and the displayed content. The image source includes an auto-brightness control that controls the brightness of the displayed content based on the brightness in the environment.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: August 4, 2015
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: John N. Border, Ralph F. Osterhout
  • Patent number: 9097890
    Abstract: This disclosure concerns an interactive head-mounted eyepiece with an integrated processor for handling content for display and an integrated image source for introducing the content to an optical assembly through which the user views a surrounding environment and the displayed content, wherein the optical assembly comprises a light transmissive illumination system and an LED lighting system coupled to a light transmissive illumination system of the optical assembly. A grating of the illumination system directs light from the LED lighting system to uniformly irradiate a reflective image display to produce an image that is reflected through the illumination system to provide the displayed content to the user.
    Type: Grant
    Filed: March 25, 2012
    Date of Patent: August 4, 2015
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Gregory D. Miller, John N. Border, Ralph F. Osterhout
  • Patent number: 9068926
    Abstract: A photo-acoustic gas sensor and methods for producing same, the gas sensor having a resonance body and a device for detecting a vibration of the resonance body, including a device for optically detecting the location of at least one partial surface of the resonance body, wherein the resonance body and the device for detecting a vibration are disposed on exactly one substrate, the resonance body is formed by at least one first recess of the substrate, and the substrate is a semiconductor material.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: June 30, 2015
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventor: Wolfgang Schade
  • Patent number: 9046704
    Abstract: Provided is a concept for variably guiding optical waves by using a layer-stack having an electro-optic core layer of electro-optic material for guiding light and an electrode arrangement with at least a first electrode layer in proximity to the electro-optic core layer, wherein the electrode arrangement is configured to activate an electro-optic effect in a region of the electro-optic core layer by an electric field generated by means of the electrode arrangement, such that a propagation of the light is manipulated in the region of the activated electro-optic effect.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: June 2, 2015
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Florenta Costache, Martin Blasl, Harald Schenk
  • Publication number: 20150147019
    Abstract: The invention provides a flat panel waveguide display, including: a fan out region, configured to allow light to experiences total internal reflection therein; a screen region, which comprises a front surface, a back surface and several side surfaces, the front surface is opposite to the back surface, wherein one side surface of the screen region optically connects to one side surface of the fan out region; and a first dielectric layer, coated on entire surface of the front surface of the screen region, wherein both of the fan out region and the screen region are made of waveguide material; wherein the first dielectric layer is divided into a first group of sections along direction of light path of light entering from the fan out region into the screen region, refractive index of each section of the first group is different from one another. Accordingly, the invention further provides a flat panel waveguide display system.
    Type: Application
    Filed: May 22, 2013
    Publication date: May 28, 2015
    Inventor: Lei Yang
  • Patent number: 9036951
    Abstract: An electro-optic structure, which may comprise an acousto-optic modulator for use in an opto-acoustic oscillator, comprises a plurality of rigidly connected resonator core components located movably separated over a substrate and anchored to the substrate at an anchor point. An actuator electrode is located separated from a first one of the rigidly connected resonator core components and an optical waveguide is located separated from a second one of the rigidly connected resonator core components. Radio frequency and direct current actuation of the actuator electrode provides a mechanical vibration in the first rigidly connected resonator core component that is mechanically coupled to the second rigidly connected resonator core component which serves to optically modulate light transported through the wave guide. Reverse operation is also contemplated. Embodiments also contemplate a third rigidly connected resonator core component as a radiation pressure driven detector.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: May 19, 2015
    Assignee: CORNELL UNIVERSITY
    Inventors: Sunil Bhave, Suresh Sridaran
  • Patent number: 9002143
    Abstract: A tunable Radio Frequency (RF) filter device includes a tunable optical source configured to generate an optical carrier signal, and a modulator coupled to the tunable optical source and configured to modulate the optical carrier signal with an RF input signal. The tunable RF filter device may also include first and second optical waveguides coupled to the modulator and having first and second dispersion slopes of opposite sign, and an optical-to-electrical converter coupled to the first and second optical waveguides and configured to generate an RF output signal with a frequency notch therein based upon the tunable optical source.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: April 7, 2015
    Assignee: Harris Corporation
    Inventors: Richard Desalvo, Charles Franklin Middleton, IV
  • Patent number: 8989525
    Abstract: According to an embodiment, a light deflecting element includes a dielectric body, a first electrode, and a second electrode. The second electrode is configured to sandwich the dielectric body with the first electrode so as to apply a voltage to the dielectric body. The second electrode includes orthogonal portions that are substantially orthogonal to an incident direction of a light beam passing through the dielectric body, parallel portions that are substantially parallel to the incident direction of the light beam. The orthogonal portions and the parallel portions are formed in an alternate manner on the light beam incident side of the dielectric body. The second electrode includes a linear sloping portion that slopes in a direction toward intersection with the incident direction of the light beam. The orthogonal portions, the parallel portions, and the linear sloping portion are formed integrally.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: March 24, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yuuzo Kamiguchi, Katsuya Sugawara, Masahiro Kanamaru, Keiichiro Yusu, Masatoshi Sakurai
  • Patent number: 8971671
    Abstract: A tunable Radio Frequency (RF) filter device includes a tunable optical source generating an optical carrier signal, and a modulator coupled to the tunable optical source and modulating the optical carrier signal with an RF input signal. The tunable RF filter device may include first and second optical waveguide paths coupled to the modulator and having first and second dispersion slopes of opposite sign from each other, one or more of the first and second optical waveguide paths comprising an optical splitter and combiner pair therein, and an optical-to-electrical converter coupled to the first and second optical waveguide paths and generating an RF output signal with a frequency notch therein based upon the tunable optical source.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: March 3, 2015
    Assignee: Harris Corporation
    Inventors: Richard DeSalvo, Charles Middleton
  • Publication number: 20150015879
    Abstract: A multimode waveguide illuminator and imager relies on a wave front shaping system that acts to compensate for modal scrambling and light dispersion by the multimode waveguide. A first step consists of calibrating the multimode waveguide and a second step consists in projecting a specific pattern on the waveguide proximal end in order to produce the desire light pattern at its distal end. The illumination pattern can be scanned or changed dynamically only by changing the phase pattern projected at the proximal end of the waveguide. The third and last step consists in collecting the optical information, generated by the sample, through the same waveguide in order to form an image. Known free space microscopy technique can be adapted to endoscopy with multimode waveguide, such as, but not limited to, fluorescence imaging or Raman spectroscopy or imaging, 3D linear scattering imaging or two-photon imaging. Super-resolution, i.e.
    Type: Application
    Filed: March 28, 2013
    Publication date: January 15, 2015
    Inventors: Ioannis Papadopoulos, Salma Farahi, Christophe Moser, Demetri Psaltis
  • Patent number: 8897607
    Abstract: A tunable Radio Frequency (RF) filter device includes a tunable optical source configured to generate an optical carrier signal, and a modulator coupled to the tunable optical source and configured to modulate the optical carrier signal with an RF input signal. The tunable RF filter device may also include first and second optical waveguides coupled to the modulator and having first and second dispersion slopes of opposite sign, and an optical-to-electrical converter coupled to the first and second optical waveguides and configured to generate an RF output signal with a frequency notch therein based upon the tunable optical source.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: November 25, 2014
    Assignee: Harris Corporation
    Inventors: Richard DeSalvo, Charles Middleton
  • Patent number: 8842945
    Abstract: Three dimensionally integrated semiconductor systems include a photoactive device operationally coupled with a current/voltage converter on a semiconductor-on-insulator (SeOI) substrate. An optical interconnect is operatively coupled to the photoactive device. A semiconductor device is bonded over the SeOI substrate, and an electrical pathway extends between the current/voltage converter and the semiconductor device bonded over the SeOI substrate. Methods of forming such systems include forming a photoactive device on an SeOI substrate, and operatively coupling a waveguide with the photoactive device. A current/voltage converter may be formed over the SeOI substrate, and the photoactive device and the current/voltage converter may be operatively coupled with one another. A semiconductor device may be bonded over the SeOI substrate and operatively coupled with the current/voltage converter.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: September 23, 2014
    Assignee: Soitec
    Inventors: Bich-Yen Nguyen, Mariam Sadaka
  • Patent number: 8842943
    Abstract: An electro-optic modulator includes a substrate comprising a surface, a pair of transmission lines formed in the surface and extending substantially in parallel with each other, a pair of first strip electrodes formed on the surface and covering the respective transmission lines, and a pair of second strip electrodes positioned at two sides of the first strip electrodes and parallel with the first strip electrodes.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: September 23, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Hsin-Shun Huang
  • Publication number: 20140233879
    Abstract: A display includes at least two stacked waveguides (110) and (120). A first waveguide (110) contains first luminophores that fluoresce to produce light of a first color. A second waveguide (120) overlying the first waveguide and contains second luminophores that fluoresce to produce light of a second color. A light collection structure (180) transmits light from a surrounding environment transversely through the first and second waveguides (110, 120) and optical vias (172, 174) provide optical paths out of the display for light respectively from the first optical waveguide (110) and the second optical waveguide (120).
    Type: Application
    Filed: October 31, 2011
    Publication date: August 21, 2014
    Inventors: Gary Gibson, Richard H. Henze, Patricia A. Beck, Xia Sheng
  • Patent number: 8810800
    Abstract: Disclosed is a surface sensing apparatus, one embodiment having a source of coherent radiation capable of outputting wavelength emissions to create a first illumination state to illuminate a surface and create a first speckle pattern, an emission deviation facility capable of influencing the emission to illuminate the surface and create a second illumination state and a second speckle pattern, and a sensor capable of sensing a representation of the first and a second speckle intensity from the first and second speckle pattern. Also disclosed are methods of sensing properties of the surface, one embodiment comprising the steps of illuminating the surface having a first surface state with the source of coherent radiation emission, sensing a first speckle intensity from the surface, influencing a relationship of the surface to the emission to create a second surface state and sensing a second speckle intensity from the surface at the second surface state.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: August 19, 2014
    Inventor: Lyle G. Shirley
  • Patent number: 8741673
    Abstract: The present invention relates to a polarized light emitting diode (LED) device and the method for manufacturing the same, in which the LED device comprises: a base, a light emitting diode (LED) chip, a polarizing waveguide and a packaging material. In an exemplary embodiment, the LED chip is disposed on the base and is configured with a first light-emitting surface for outputting light therefrom; and the waveguide, being comprised of a polarization layer, a reflection layer, a conversion layer and a light transmitting layer, is disposed at the optical path of the light emitted from the LED chip; and the packaging material is used for packaging the waveguide, the LED chip and the base into a package.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: June 3, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Cheng-Huan Chen, Han-Ping Yang, Hung-Yi Lin, Cheng-Hsuan Lin
  • Patent number: 8649640
    Abstract: The present invention provides an optical 90-degree hybrid circuit for reducing wavelength dependency of an IQ phase difference. An optical 90-degree hybrid circuit according to the present invention comprises a first demultiplexing optical coupler including a first and second input port, a second demultiplexing optical coupler including a third and fourth input port, first and second arm waveguides connected to the first and second input port, each having the same length, a third and fourth arm waveguides connected to the third and fourth input port, each having the same length, a 90-degree phase shift section installed in one of the first to fourth arm waveguides, a first optical coupler connected to the first and third arm waveguide, and a second optical coupler connected to the second and fourth arm waveguide, the light is inputted into the first and fourth input port or into the second and third input port.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: February 11, 2014
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yohei Sakamaki, Yusuke Nasu, Toshikazu Hashimoto, Kuninori Hattori, Hiroshi Takahashi
  • Patent number: 8644651
    Abstract: The approach of one embodiment of the present invention is to mechanically vibrate a length of fiber optic cable transmitting coherent laser light, so that a mechanical resonance in the optical fiber is excited. This is achieved by suspending the fiber optic cable between two points and controlling both the axial tension on the suspended fiber optic cable as well as the mechanical forcing frequency. The cyclic, high-frequency mechanical perturbations of the fiber rapidly vary the path length and internal reflection angles of one or more respective modes of the transmitted laser light. In certain embodiments, the system may be tuned to induce a standing mechanical wave in the fiber. Higher-harmonic waveforms and higher amplitudes in the resonant fiber produce excellent speckle reduction and uniform intensity distributions.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: February 4, 2014
    Assignee: GE Healthcare Bio-Sciences Corp.
    Inventors: William Dougherty, Kyle Curts
  • Patent number: 8600200
    Abstract: A nano-optomechanical transducer provides ultrabroadband coherent optomechanical transduction based on Mach-wave emission that uses enhanced photon-phonon coupling efficiencies by low impedance effective phononic medium, both electrostriction and radiation pressure to boost and tailor optomechanical forces, and highly dispersive electromagnetic modes that amplify both electrostriction and radiation pressure. The optomechanical transducer provides a large operating bandwidth and high efficiency while simultaneously having a small size and minimal power consumption, enabling a host of transformative phonon and signal processing capabilities. These capabilities include optomechanical transduction via pulsed phonon emission and up-conversion, broadband stimulated phonon emission and amplification, picosecond pulsed phonon lasers, broadband phononic modulators, and ultrahigh bandwidth true time delay and signal processing technologies.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: December 3, 2013
    Assignee: Sandia Corporation
    Inventors: Peter T. Rakich, Ihab F. El-Kady, Roy H. Olsson, Mehmet Fatih Su, Charles Reinke, Ryan Camacho, Zheng Wang, Paul Davids
  • Patent number: 8594474
    Abstract: A Mach-Zehnder wavelength division multiplexer (WDM) is provided. The WDM has a short length with flat passband and low crosstalk. Since passband is flattened, crosstalk is reduced and length of the WDM is shortened, the WDN can be used for optical communication and optical interconnection in a single chip.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: November 26, 2013
    Assignee: National Central University
    Inventors: Hung-Chih Lu, Jen-Inn Chyi
  • Patent number: 8498503
    Abstract: An integrated optical coupler including in the medium separating a first integrated waveguide from a second substantially parallel integrated waveguide, a succession of strips parallel to one another and orthogonal to the general direction of the waveguides, said strips being made of a material having an absorption preventing the propagation of an electromagnetic wave across its volume, and having: a length H equal to k?/2nmedium, where k is an integer, ? is the central wavelength used, and nmedium is the optical index of the medium between the waveguides; a period P smaller than ?/2nmedium; and ends at a distance shorter than ?/10 from the waveguides.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: July 30, 2013
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Alexandre Mary, Salim Boutami, Roch Espiau De Lamaestre, Jérôme Le Perchec
  • Patent number: 8498502
    Abstract: A phase modulator may include a middle layer having a first refractive index, a first surrounding layer of material in contact with the middle layer and having a second refractive index, a second surrounding layer of material in contact with the middle layer and may having a third refractive index, a first electrode in electrical contact with the first surrounding layer, and a second electrode may be in electrical contact with the second surrounding layer. When no voltage is applied across the first electrode and the second electrode, the first refractive index may be greater than the second refractive index and the third refractive index. When a voltage is applied across the first electrode and the second electrode, the first refractive index may be less than the second refractive index within a portion of the phase modulator substantially within an electric field induced by such voltage.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: July 30, 2013
    Assignee: Fujitsu Limited
    Inventor: Alexander Umnov
  • Patent number: 8498501
    Abstract: Provided are a semiconductor optical modulator and a semiconductor Mach-Zehnder optical modulator of high efficiency and high reliability.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: July 30, 2013
    Assignee: NEC Corporation
    Inventors: Kenji Sato, Tomoaki Kato
  • Patent number: 8483521
    Abstract: Disclosed are resonant optical modulators, and methods of use thereof, that achieve constant photon populations in the resonator by simultaneously modulating at least two variable modulation parameters.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: July 9, 2013
    Assignee: Massachusetts Institute of Technology
    Inventor: Milos Popovic
  • Patent number: 8422834
    Abstract: Provided is a semiconductor integrated circuit. The semiconductor integrated circuit includes a semiconductor pattern disposed on a substrate and including an optical waveguide part and a pair of recessed portions. The optical waveguide part has a thickness ranging from about 0.05 ?m to about 0.5 ?m. The recessed portions are disposed on both sides of the optical waveguide part and have a thinner thickness than the optical waveguide part. A first doped region and a second doped region are disposed in the recessed portions, respectively. The first and second doped regions are doped with a first conductive type dopant and a second conductive type dopant, respectively. An intrinsic region is formed in at least the optical waveguide part to contact the first and second doped regions.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: April 16, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jeong-Woo Park, Gyung-Ock Kim, Mi-Ran Park, Jong-Bum You
  • Patent number: 8417069
    Abstract: A system may comprise a single wavelength laser; a modulator optically coupled to said laser; a length of multi-mode fiber optically coupled to said modulator; and a phase mask optically coupled to said fiber. The phase mask may be configured to filter out modes other than a selected mode.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: April 9, 2013
    Assignee: Verizon Patent and Licensing Inc.
    Inventor: David Zhi Chen
  • Patent number: 8380025
    Abstract: Liquid crystal waveguides for dynamically controlling the refraction of light. Generally, liquid crystal materials may be disposed within a waveguide in a cladding proximate or adjacent to a core layer of the waveguide. In one example, portions of the liquid crystal material can be induced to form refractive or lens shapes in the cladding that interact with a portion (e.g. evanescent) of light in the waveguide so as to permit electronic control of the refraction/bending, focusing, or defocusing of light as it travels through the waveguide. In one example, a waveguide may be formed using one or more patterned or shaped electrodes that induce formation of such refractive or lens shapes of liquid crystal material, or alternatively, an alignment layer may have one or more regions that define such refractive or lens shapes to induce formation of refractive or lens shapes of the liquid crystal material.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: February 19, 2013
    Assignee: Vescent Photonics, Inc.
    Inventors: Michael H. Anderson, Scott D. Rommel, Scott R. Davis
  • Patent number: 8380018
    Abstract: A conductive polymer and a semiconducting carbon nanotube material are combined to form a highly conductive composite. The composite can be used for EMI shielding, optical sensing, optical switching, and other uses.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: February 19, 2013
    Inventor: John W. Pettit
  • Patent number: 8369659
    Abstract: An electromagnetically responsive element includes sets of arrangements of self-resonant bodies, such as atoms or quantum dots that form an effective dielectric constant, typically at or near a resonance.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: February 5, 2013
    Inventors: W. Daniel Hillis, Roderick A. Hyde, Nathan P. Myhrvold, Clarence T. Tegreene, Lowell L. Wood, Jr.
  • Patent number: 8358881
    Abstract: An electromagnetically responsive element includes sets of arrangements of self-resonant bodies, such as atoms or quantum dots that form an effective dielectric constant, typically at or near a resonance.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: January 22, 2013
    Inventors: W. Daniel Hillis, Roderick A. Hyde, Nathan P. Myhrvold, Clarence T. Tegreene, Lowell L. Wood, Jr.
  • Patent number: 8355604
    Abstract: A silicon-on-insulator device has a waveguide having a carrier wafer layer, a buffer layer, a guiding layer, and a cladding layer. The silicon-on-insulator is additionally provided with a polarizing arrangement deposited on a predetermined portion of the waveguide, the polarizing arrangement being provided with a bottom metal layer, a dielectric gap, and a top metal layer, the bottom metal layer being deposited on the cladding layer. A protection layer formed of SiO2 overlies the top metal layer. The polarizing arrangement attenuates preferentially the electromagnetic energy that is propagated in the waveguide in the TM transmission mode. There is formed a gap plasmon-polariton (GPP) confined to the dielectric gap, the dielectric gap having a high optical loss characteristic. In accordance with a method aspect, there are provided the steps of forming a silicon-on-insulator waveguide arrangement and depositing a polarizer structure that absorbs the electromagnetic energy in the TM transmission mode.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: January 15, 2013
    Assignee: Wayne State University
    Inventor: Ivan Avrutsky
  • Patent number: 8346027
    Abstract: Provided is an electro-optic device. The electro-optic device includes an input Y-branch comprising a first input branch and a second input branch, an output Y-branch comprising a first output branch and a second output branch, a first optical modulator and a second optical modulator connected in series between the first input branch and the first output branch, and a third optical modulator connecting the second input branch to the second output branch. The first optical modulator comprises a PIN diode, and each of the second optical modulator and the third optical modulator comprises a PN diode.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: January 1, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jeong Woo Park, Jongbum You, Gyungock Kim
  • Patent number: 8311372
    Abstract: Liquid crystal waveguides for dynamically controlling the refraction of light. Generally, liquid crystal materials may be disposed within a waveguide in a cladding proximate or adjacent to a core layer of the waveguide. In one example, portions of the liquid crystal material can be induced to form refractive or lens shapes in the cladding that interact with a portion (e.g. evanescent) of light in the waveguide so as to permit electronic control of the refraction/bending, focusing, or defocusing of light as it travels through the waveguide. In one example, a waveguide may be formed using one or more patterned or shaped electrodes that induce formation of such refractive or lens shapes of liquid crystal material, or alternatively, an alignment layer may have one or more regions that define such refractive or lens shapes to induce formation of refractive or lens shapes of the liquid crystal material.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: November 13, 2012
    Assignee: Vescent Photonics, Inc.
    Inventors: Michael H. Anderson, Scott D. Rommel, Scott R. Davis
  • Patent number: 8304796
    Abstract: Provided is a light-emitting apparatus in which light extraction efficiency of a light-emitting device is improved and viewing angle dependency of an emission color is reduced. The light-emitting apparatus includes a cavity structure and a periodic structure. When guided-wave light is diffracted by the periodic structure in a direction that forms an angle which is larger than 90° and smaller than 180° relative to a guided-wave direction of an optical waveguide in the cavity structure, a wavelength of the diffracted light becomes longer as the diffraction angle increases.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: November 6, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koichi Fukuda
  • Patent number: 8306372
    Abstract: The waveguide-type polarizer includes: a Z-cut lithium niobate substrate; an optical waveguide having a ridge structure and formed on the substrate; a low refractive index film formed with a thickness satisfying 0?n·t/??0.3742 (where n is a refractive index, t (?m) is the thickness of the film, and ? (?m) is the wavelength of a light wave) on the side of the ridge structure; and a high refractive index film formed with a thickness satisfying 0.089?n·/? on the low refractive index film. The width of the ridge structure is a ridge width where the distribution of ordinary light of the light waves propagated through the optical waveguide changes and the distribution of extraordinary light of the light waves does not change, the angle of the ridge structure is less than 90°, and the waveguide-type polarizer has a function of transmitting extraordinary light.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: November 6, 2012
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Katsutoshi Kondou, Masanao Kurihara, Toru Sugamata
  • Patent number: 8306375
    Abstract: A first exemplary aspect of the present invention is a wavelength-tunable optical transmitter including: a semiconductor substrate (101); a wavelength-tunable light source that is formed on the semiconductor substrate (101) and includes at least a first reflector (102) of a wavelength-tunable type and a gain region (104); a semiconductor optical modulator formed on the semiconductor substrate (101); a first semiconductor optical waveguide (105c) that is formed on the semiconductor substrate (101) and smoothly connected to the wavelength-tunable light source; a second semiconductor optical waveguide (105d) that is formed on the semiconductor substrate and smoothly connected to the semiconductor optical modulator; a waveguide coupling region (108) in which the first and second semiconductor optical waveguides are collinearly coupled with a length LC that is not equal to m/2 (m: integer) times a complete coupling length LC0; and a second reflector (113) formed at an end of the waveguide coupling region (108).
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: November 6, 2012
    Assignee: NEC Corporation
    Inventor: Tomoaki Kato
  • Patent number: 8270778
    Abstract: A single-photon absorption all-optical signal-processing device, systems employing the same, and methods of making and using the same. Illustrative examples are provided based on silicon semiconductor technology that employs rectangular waveguides fabricated on SOI wafers. In some embodiments, it is observed that the waveguides have surface state density, ?, of not less than 1.5×1018 cm?1s?1mW?1 to provide a single-photon absorption operation mode. In some embodiments, some portion of the ridge waveguide structure has a surface to volume ratio of at least 18 ?m?1, computed using a unit length of 1 ?m of the waveguide, with the width and depth dimensions of the waveguide being measured in units of microns.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: September 18, 2012
    Assignee: University of Washington through its Center for Commercialization
    Inventors: Michael J. Hochberg, Thomas W. Baehr-Jones
  • Patent number: 8270781
    Abstract: A number of fluidic-photonic devices for allowing optical detection, systems employing such devices, and related methods of operation and fabrication of such devices are disclosed herein. In at least some embodiments, the devices can serve as flow cytometry devices and/or employ microfluidic channels. Also, in at least some embodiments, the devices are fluidic-photonic integrated circuit (FPIC) devices that employ both fluidic channels and one or more waveguides capable of receiving and/or delivering light, and that can be fabricated using polymeric materials. The fluidic-photonic devices in at least some embodiments are capable of functionality such as on-chip excitation, time-of-flight measurement, and can experience enhanced fluorescence detection sensitivity. In at least some embodiments, the devices employ detection waveguides that are joined by way of a waveguide demultiplexer.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: September 18, 2012
    Assignee: The Regents of the University of California
    Inventors: Yu-Hwa Lo, Victor Jie Lien, Chun Hao Randy Chen
  • Patent number: 8260093
    Abstract: Fibre substrates act as a conduit for light along which response signals are transmitted to a controller in the form of an electronic device associated with a component. The processed signals are stored in a local memory to provide a component history and a prediction of future performance and life. Service and repair history may be added to the component device memory to enable a complete history to be stored with the component. A controller may transmit data to an external controller or display through typically a wireless connection. Power to the component electronics may be provided by an induction loop or transformer.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: September 4, 2012
    Assignee: Rolls-Royce, PLC
    Inventor: Ian C. D. Care
  • Patent number: 8244077
    Abstract: This invention provides a versatile unit cell as well as programmable and reconfigurable optical signal processors (such as optical-domain RF filters) that are constructed from arrays of those unit cells interconnected by optical waveguides. Each unit cell comprises an optical microdisk, an optical phase shifter, and at least one input/output optical waveguide, wherein the microdisk and the phase shifter are both optically connected to a common waveguide.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: August 14, 2012
    Assignee: HRL Laboratories, LLC
    Inventor: Daniel Yap
  • Patent number: 8188499
    Abstract: The present invention relates to a polarized light emitting diode (LED) device and the method for manufacturing the same, in which the LED device comprises: a base, a light emitting diode (LED) chip, a polarizing waveguide and a packaging material. In an exemplary embodiment, the LED chip is disposed on the base and is configured with a first light-emitting surface for outputting light therefrom; and the waveguide, being comprised of a polarization layer, a reflection layer, a conversion layer and a light transmitting layer, is disposed at the optical path of the light emitted from the LED chip; and the packaging material is used for packaging the waveguide, the LED chip and the base into a package.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: May 29, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Cheng-Huan Chen, Han-Ping Yang, Hung-Yi Lin, Cheng-Hsuan Lin