Switch (i.e., Switching From One Terminal To Another, Not Modulation) Patents (Class 385/16)
  • Patent number: 10412335
    Abstract: A display apparatus includes a display section that displays an image and a controller that controls the display apparatus based on setting information to cause the display section to display the image and changes the setting information from first setting information to second setting information in accordance with a first instruction. In a state in which the controller has changed the setting information from the first setting information to the second setting information and causes the display section to display a first image based on first image information from the first input section, and when the controller receives a second instruction to cause the display section to display a second image based on second image information from the second input section, the controller changes the setting information from the second setting information to the first setting information and causes the display section to display the second image.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: September 10, 2019
    Inventors: Toshiki Fujimori, Yoshiteru Uchiyama, Takahiro Ano, Toru Karasawa
  • Patent number: 10409074
    Abstract: Near-to-eye devices with steerable phased arrays are provided. In some configurations, a device comprises waveguides, e.g., color plates, that are individually formed to couple a corresponding color output of a micro-display engine and project an image into a human vision system. Some configurations include steerable phased arrays for generating light defining a field of view of image content. The generated light is aligned with light from a real-world view to create an output that concurrently displays the real-world view with the field of view of the image content. The light from the steerable phased arrays is directed through one or more waveguides to an output region of the one or more waveguides. The light from the real-world view can pass through transparent portions of waveguides in a manner that aligns a rendering of the image content with the light from the real-world view to create augmented reality views.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: September 10, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: David Douglas Bohn
  • Patent number: 10409137
    Abstract: A system and method for controlling the energy flux of a light beam (carrier wave) relies on the manipulation of a light beam's Poynting vector to switch the light beam from one optical waveguide to another. A modulator positioned between the two waveguides has an index of refraction n+ik wherein ik is a loss/gain component. It is the manipulation of this loss/gain component ik by an external stimulus which causes anisotropic changes in orthogonal components of the light beam's Poynting vector. This, in turn, causes changes in the propagation distance of the light beam (carrier wave) over a length L along the waveguides that switch the light beam from one waveguide to the other.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: September 10, 2019
    Inventor: Chen-Kuo Sun
  • Patent number: 10405073
    Abstract: An optical switch module includes: N first input ports to which a signal is input; M first output ports from which a signal is output; an M×N switch to include N second input ports and M second output ports, and to set a path between the second input ports and the second output ports, the second output ports coupling with the first output ports, respectively; a test-signal input port to which a test-signal is capable of being externally input; an expansion port from which one of the test-signal and the signal from any one of the first input ports is output; and an optical switch to selectively connect at least one of the test-signal and the signal from any one of the first input ports to at least one of the expansion port and any one of the second input ports, wherein both N and M are natural numbers.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: September 3, 2019
    Inventor: Shinji Komiya
  • Patent number: 10396892
    Abstract: A method of automated testing and evaluation of a node of a communications network, the method comprising: a management computer interacting with the node to discover fiber trails within the node that can be safely tested; and the management computer interacting with the node to test at least continuity of each identified fiber trail that can be safely tested.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: August 27, 2019
    Assignee: Ciena Corporation
    Inventors: Dane Hurley, Scott Kohlert
  • Patent number: 10379292
    Abstract: An optical transmission module according to the disclosure comprises a first optical transmission line, a second optical transmission line, and a ferrule. The first optical transmission line has a first end face. The second optical transmission line has a second end face opposed to the first end face of the first optical transmission line. An end of the first optical transmission line is situated inside the ferule, and the ferule has a light-transmittable intermediary portion situated between the first end face and the second end face.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: August 13, 2019
    Inventor: Takahiro Matsubara
  • Patent number: 10382845
    Abstract: A data center network device provides configurations where the port density can be increased by incorporating multiport transceivers within the device and the use of high density fiber connections on exterior panels of the device. The device also permits dynamically reassigning fiber connections to convert from single fiber connection paths to higher rate bonded fiber paths while at the same time making more efficient use of the fiber interconnections.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: August 13, 2019
    Assignee: Fiber Mountain, Inc.
    Inventors: Mohammad H. Raza, David G. Stone, Aristito Lorenzo, Ronald M Plante
  • Patent number: 10352855
    Abstract: A method, apparatus and optical device for detecting a relationship between an evanescent field and Goos-Hänchen shift, said method comprising: obtaining a potential field function of an evanescent field acting on total-reflection light according to physical meanings of a force function and the potential field function of light in the evanescent field (S101); obtaining a wave function of the perturbed total-reflection light by means of the Schrödinger equation by combining with the potential field function of the evanescent field acting on total-reflection light (S102); and comparing the wave function of the perturbed total-reflection light with a wave function of free total-reflection light with no action from the evanescent field, and determining a momentum gained by the total-reflection light under the action of the evanescent field, which is the same in nature as a momentum of the evanescent field (S103).
    Type: Grant
    Filed: July 28, 2018
    Date of Patent: July 16, 2019
    Inventors: Ping Chen, Ming Li, Weiwei Liu, Lie Lin
  • Patent number: 10355780
    Abstract: Optical communication systems and methods using coherently combined optical beams are disclosed. A representative system includes a first data source for sending first data at a first frequency of a first optical beam to a first aperture, and at a second frequency of a second optical beam to a second aperture. The system further includes a second data source for sending second data at a third frequency of a third optical beam to the first aperture, and at a fourth frequency of a fourth optical beam to the second aperture. The system also includes a first interleaver of the first aperture configured to interleave the first data at the first frequency and the second data at the third frequency; and a second interleaver of the second aperture configured to interleave the first data at the second frequency and the second data at fourth frequency.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: July 16, 2019
    Assignee: Facebook, Inc.
    Inventor: Shih-Cheng Wang
  • Patent number: 10356389
    Abstract: A method and apparatus for dissipating an electrostatic charge from an optical element are described. An apparatus includes the optical element, a microelectromechanical system (MEMS) device located proximate to the optical element, and a conductive coating over the optical element, wherein the conductive coating is substantially transparent, and wherein the conductive coating dissipates the electrostatic charge.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: July 16, 2019
    Assignee: Intel Corporation
    Inventors: Arnon Hirshberg, Barak Freedman
  • Patent number: 10338320
    Abstract: Telecommunications switches are presented, including expandable optical switches that allow for a switch of N inputs×M outputs to be expanded arbitrarily to a new number of N inputs and/or a new number of M outputs. Switches having internal switch blocks controlling signal bypass lines are also provided, with these switches being useful for the expandable switches.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: July 2, 2019
    Assignee: NeoPhotonics Corporation
    Inventors: Winston Way, Anthony J. Ticknor, Ilya Vorobeichik
  • Patent number: 10331009
    Abstract: The present invention is based on a two-dimensional photonic crystal where are inserted defects that originate two waveguides and one resonant cavity. An electromagnetic signal that crosses the device is confined in the interior of the defects, due to the photonic band gap associated with the periodic structure that surrounds it. Its main function is the control of the flux of an electromagnetic signal over a communication channel, blocking (state off) or allowing (state on) the passage of the signal. It also promotes the change in the propagation direction of an electromagnetic signal by an angle of 120 degrees, providing greater flexibility in the design of integrated optical systems. The working principle of the device is based on the excitation of dipole modes in its resonant cavity, accordingly to the application of an external DC magnetic field on the magneto-optical material that constitutes it. In states on and off the magneto-optical material is magnetized and nonmagnetized, respectively.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: June 25, 2019
    Inventors: Victor Dmitriev, Gianni Masaki Tanaka Portela, Raphael Rafsandjani Batista
  • Patent number: 10317044
    Abstract: An artificial illumination device for generating natural light similar to that from the sun and the sky comprises a direct-light source comprising a first emitting surface and configured to produce, from primary light, direct light exiting the first emitting surface into a direct-light direction at low divergence, the direct-light source comprising a plurality of pairs of a first light-emitting device positioned upstream the first emitting surface and configured to emit the primary light and a collimator configured to collimate the primary light emitted by the first light-emitting device along the direct-light direction; and a diffused-light generator configured to cause diffused light at a second emitting surface.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: June 11, 2019
    Assignee: CoeLux S.r.l.
    Inventor: Paolo Di Trapani
  • Patent number: 10310196
    Abstract: A portion of an optical waveguide extending laterally within a photonic integrated circuit (PIC) chip is at least partially freed from the substrate to allow physical displacement of a released waveguide end relative to the substrate and relative to an adjacent photonic device also fabricated in the substrate. The released waveguide end may be displaced to modulate interaction between the photonic device and an optical mode propagated by the waveguide. In embodiments where the photonic device is an optical coupler, employing for example an Echelle grating or arrayed waveguide grating (AWG), mode propagation through the coupler may be modulated via physical displacement of the released waveguide end. In one such embodiment, thermal sensitivity of an integrated optical wavelength division multiplexer (WDM) is reduced by displacing the released waveguide end relative to the coupler in a manner that counters a temperature dependence of the optical coupler.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: June 4, 2019
    Assignee: Intel Corporation
    Inventors: David N. Hutchison, Haisheng Rong, John Heck
  • Patent number: 10302974
    Abstract: Preparation cell systems and methods are described herein. One example of a system for a preparation cell includes a laser coupled to a fiber bundle comprising a plurality of fibers, a preparation cell to prepare a state of laser light received by the fiber bundle, and an exiting fiber bundle coupled to the preparation cell.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: May 28, 2019
    Assignee: Honeywell International Inc.
    Inventors: James Goeders, Matthew Edward Lewis Jungwirth
  • Patent number: 10298325
    Abstract: An optical transceiver for controlling a steering angle between a receive light beam and a transmit light beam includes an optical beam coupling device. The optical beam coupling device comprises a plurality of optical elements configured to control a steering angle between the receive light beam received by the optical beam coupling device along a first line of sight (LOS) and the transmit light beam that is output from the optical beam coupling device along a second LOS different from the first LOS, wherein both the receive light beam and the transmit light beam pass through the plurality of optical elements. The plurality of optical elements have a set of combinations for different positions of each of the optical elements, wherein each position in the set of combinations induces a different steering angle between the transmit light beam and the receive light beam.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: May 21, 2019
    Assignee: Facebook, Inc.
    Inventors: Kevin Michael Birnbaum, Harvard Keese Harding, Jr., Eric Douglas Miller
  • Patent number: 10268617
    Abstract: An integrated circuit includes a transmitting circuit configured to be coupled to a physical serial interface having a bit width. The transmitting circuit is configured to transmit, via the physical serial interface, a frame including multiple aligned flits all of an equal fixed length that is an integer multiple of the bit width of the physical serial interface. The multiple flits include both a control flit specifying at least a command to be performed by a recipient of the command and a data flit providing data to be operated upon through performance of the command. The control flit includes a data protection code computed over the control flit and a data flit of a previously transmitted frame.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: April 23, 2019
    Assignee: International Business Machines Corporation
    Inventors: Lonny Lambrecht, Michael S. Siegel, William S. Starke, Jeffrey A. Stuecheli
  • Patent number: 10268043
    Abstract: In various embodiments, one or more prisms are utilized in a wavelength beam combining laser system to regulate beam size and/or to provide narrower wavelength bandwidth.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: April 23, 2019
    Assignee: TERADIODE, INC.
    Inventors: Wang-Long Zhou, Bien Chann, Daniel Gary Dugmore, Mike Cruz
  • Patent number: 10263309
    Abstract: A device is provided that includes a first waveguide configured to guide propagation of RF waves inside the first waveguide. A first side of the first waveguide is configured to emit an evanescent field associated with the propagation of the RF waves inside the first waveguide. The device also includes a second waveguide having a second side positioned within a predetermined distance to the first side of the first waveguide. The second waveguide is configured to guide propagation, inside the second waveguide, of induced RF waves associated with the evanescent field from the first waveguide. The device also includes a first probe coupled to the first waveguide and configured to emit the RF waves for propagation inside the first waveguide. The device also includes a second probe coupled to the second waveguide and configured to receive induced RF waves propagating inside the second waveguide.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: April 16, 2019
    Assignee: Waymo LLC
    Inventors: Pierre-yves Droz, Adam Brown, Daniel L. Rosenband, Samuel William Lenius
  • Patent number: 10261312
    Abstract: An electronic device disclosed herein includes a mirror controller configured to generate a drive control signal, with a drive circuit configured to generate a drive signal for a movable mirror based upon the drive control signal. A sensing circuit is configured to sense the drive signal. The mirror controller is further configured to adjust the drive control signal as a function of the sensed drive signal.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: April 16, 2019
    Assignee: STMicroelectronics Ltd
    Inventor: Elik Haran
  • Patent number: 10261390
    Abstract: A laser beam steering device and a system including the same are provided. The laser beam steering device includes a waveguide through which a laser beam passes, and a cladding layer disposed on the waveguide. The cladding layer has a refractive index which changes according to an electrical signal applied thereto and thus a phase of a laser beam passing through the waveguide may be changed.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: April 16, 2019
    Inventors: Sunil Kim, Duhyun Lee, Changbum Lee, Byounglyong Choi
  • Patent number: 10252563
    Abstract: An optical product can reproduce a first 3D image of at least part of a first 3D object and a second 3D image of at least part of a second 3D object. The optical product comprises a surface configured, when illuminated, to reproduce by reflected or transmitted light, the first 3D image without reproducing the second 3D image at a first angle of view, and the second 3D image without reproducing the first 3D image at a second angle of view. Each portion of first portions can correspond to a point on a surface of the first 3D object, and comprise first non-holographic features configured to produce at least part of the first 3D image. Each portion of second portions can correspond to a point on a surface of the second 3D object, and comprise second non-holographic features configured to produce at least part of the second 3D image.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: April 9, 2019
    Inventors: Christopher Chapman Rich, Joel Mikael Petersen, John Michael Tamkin, Roger Winston Phillips, Phillip Christopher Harvey
  • Patent number: 10250350
    Abstract: An optical switch (10) comprising: input ports (12, 14) arranged to receive optical signals from directions D1 to Dn; output ports (16, 18) arranged to output optical signals to the said directions; drop ports (20); add ports (22); a first switch array (24) arranged to receive from a first said input port (12) optical signals at a plurality of wavelengths, and comprising switch elements (26) each arranged to selectively direct optical signals to a respective drop port.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: April 2, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Francesco Testa, Giulio Bottari
  • Patent number: 10243660
    Abstract: Disclosed herein is a method of optical modulation, the method comprising irradiating an optical switch with a control beam at a first control time and irradiating the optical switch with a signal beam at a signal time. The transmitted intensity of the signal beam in a direction depends on the delay time between the first control time and the signal time and the transmitted intensity of the signal beam in the direction is detectably different than a static signal. The optical switch comprises a nanorod array, the nanorod array comprising a plurality of nanorods extending outwardly from a substrate.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: March 26, 2019
    Assignees: Northwester University, UChicago Argonne, LLC
    Inventors: Robert P. H. Chang, Richard D. Schaller, John B. Ketterson, Peijun Guo
  • Patent number: 10209448
    Abstract: An integrated non-reciprocal polarization rotator comprises a substrate, a Faraday crystal, a first waveguide, and a second waveguide. The substrate has a recess extending to a predetermined depth. The Faraday crystal is mounted in the recess and optically coupled with the first waveguide and the second waveguide.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: February 19, 2019
    Assignee: Skorpios Technologies, Inc.
    Inventors: John Dallesasse, Stephen B. Krasulick
  • Patent number: 10197738
    Abstract: A Micro-Electro-Mechanical Systems (MEMS) actuator can rotate other, discrete optical elements that may be dimensionally large (especially in terms of thickness), may be of relatively large mass, and may be made of dissimilar materials (i.e., some material other than silicon). The rotating optical element may be reflective or transmissive. The MEMS actuator is used in multiple additional embodiments, allowing the integration of multiple optical functions into a single optical component, for a variety of applications. These optical functions include optical switching, optical attenuation, tunable optical filtering, the adjustment of the phase angle of an optical signal, and the detection or receiving of an optical signal or optical power level.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: February 5, 2019
    Inventors: Jeffrey B. Lee, Rong Ping Hsia, Robert E. Schleicher, Ho-Shang Lee
  • Patent number: 10200144
    Abstract: A communication system that can be used, e.g., to provide high-speed access to the servers of a data center. In an example embodiment, the communication system transports data using WDM optical signals. The downlink WDM signals have some WDM components that are modulated with data and some WDM components that are not modulated with data. The uplink WDM signals are generated at the server end of the system by modulating with data the unmodulated WDM components received through the downlink. Appropriately connected wavelength multiplexers, wavelength demultiplexers, and/or optical filters can be used to properly apply the various modulated WDM components to the corresponding optical receivers and the unmodulated WDM components to the corresponding optical transmitters. The resulting system architecture advantageously enables, e.g., the use of a single, conveniently located multi-wavelength light source to provide carrier wavelengths for both uplink and downlink optical traffic.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: February 5, 2019
    Inventors: Aref Chowdhury, David Miles
  • Patent number: 10191219
    Abstract: An optical selector arrangement (22), comprising: a first set of optical ports (30), having a first number of optical ports, the first number being greater than or equal to 2; a second set of optical ports (42), having a second number of optical ports, the second number being greater than the first number; the second set of optical ports being for communicating with the first set of optical ports, a selector interface (40) for the optical selector arrangement, the selector interface comprising the second set of optical ports (42), a part of the optical selector arrangement functioning as a selector (44), the selector being arranged to selectively optically couple the first set of optical ports (30) to a set of ports of the second set of optical ports (42) of the selector interface, the selector (44) being rotatable relative to the selector interface (40) to facilitate the selection by optically aligning the first set of optical ports (30) to the second set of optical ports (42) of the selector interface (40);
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: January 29, 2019
    Assignee: BAE Systems plc
    Inventors: Christopher Ralph Pescod, Mohammed Nawaz, Colin James Harper
  • Patent number: 10193651
    Abstract: It is difficult to improve the wavelength-band utilization rate of an optical network as a whole while operating the optical network stably; and therefore, an optical network controller according to an exemplary aspect of the present invention includes optical wavelength region setting means for setting a wavelength region in an optical transmission line between a plurality of optical nodes composing an optical network using wavelength division multiplexing system dividing the wavelength region into consecutive regions of a first wavelength region and a second wavelength region; optical path setting means for setting a first optical path in the first wavelength region and a second optical path in the second wavelength region, the second optical path differing from the first optical path in a route; and control unit for instructing the plurality of optical nodes on a central wavelength and a usable band of signal light for the optical node to transmit based on a setting by the optical path setting means.
    Type: Grant
    Filed: February 16, 2015
    Date of Patent: January 29, 2019
    Inventors: Hitoshi Takeshita, Shinsuke Fujisawa, Ryuichi Ikematsu, Akio Tajima, Tomoyuki Hino
  • Patent number: 10175495
    Abstract: The present disclosure relates to wavelength selective switches. In one embodiment, a wavelength selective switch may include a liquid crystal (LC)-based attenuation switching device that has an LC switching module to switch an incident beam to one of a plurality of output paths. The LC switching module may include one or more LC switching cells. The LC-based attenuation switching device further includes a mirror to reflect the beam from the LC switching module so as to output the beam through a corresponding output port, and a temperature compensation module provided on a side of the mirror opposite to the LC switching module. The temperature compensation module may be configured to alter curvature of the mirror as temperature changes so as to compensate for deformation of the LC switching cells due to the temperature change.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: January 8, 2019
    Inventors: Liu Yang, Rui Yang, Zhilin Yuan, Chang'an Li, Jinping Guo, Lidan Song, Fan Wang, Yuhong Ma, Lihong Tang
  • Patent number: 10175425
    Abstract: An integrated optical collimator device includes an optical fiber extending from a first end to a second end. The first end of the optical fiber is configured to be coupled to a light source or a light receiver. A housing is coupled to the ferrule and extends radially over the ferrule. A collimating lens is positioned in the housing proximate the second end of the optical fiber. A polarizer element is positioned within the housing proximate the collimating lens.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: January 8, 2019
    Assignee: Micatu Inc.
    Inventors: Atul Pradhan, Scott Stelick
  • Patent number: 10168597
    Abstract: A method for achieving alignment and optical switching of a liquid crystal (LC) layer that is deposited on chalcogenide glass (ChG). Direct brushing of ChG produces an effective LC alignment layer. Also disclosed is the related waveguide assembly for achieving alignment and optical switching of a liquid crystal (LC) layer deposited on chalcogenide glass (ChG).
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: January 1, 2019
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Jesse A. Frantz, Jason D. Myers, Christopher M. Spillmann, Jawad Naciri, Banahalli R. Ratna, Leslie Brandon Shaw, Jasbinder S. Sanghera, Robel Y. Bekele, Jakub Kolacz
  • Patent number: 10162117
    Abstract: This invention removes the need to provide temperature control for an optical time delay chip, which is usually provided by a thermo-electric-cooler, in order to significantly reduce the power dissipation of the device and allow ‘uncooled’ operation. Uncooled operation is achieved by monitoring the temperature of the chip, and changing the tuning of each microresonator within the device in order to continue providing the required time delay as the temperature is varied. This invention takes advantage of the fact that microresonators provide a series of resonant wavelengths over a wide wavelength range, so that the closest resonance wavelength below the operating wavelength can always be tuned up to that wavelength. When the device temperature changes, this is accounted for by both the choice of resonance wavelengths and the tuning for each of the microresonators in the device, in order to keep the correct tunable delay.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: December 25, 2018
    Assignee: Morton Photonics
    Inventors: Paul A. Morton, Jacob Khurgin
  • Patent number: 10165260
    Abstract: Light from an array of laser light sources are spread to cover the modulating face of a DMD or other modulator. The spread may be performed, for example, by a varying curvature array of lenslets, each laser light directed at one of the lenslets. Light from neighboring and/or nearby light sources overlap at a modulator. The lasers are energized at different energy/brightness levels causing the light illuminating the modulator to itself be modulated (locally dimmed). The modulator then further modulates the locally dimmed lights to produce a desired image. A projector according to the invention may utilize, for example, a single modulator sequentially illuminated or separate primary color modulators simultaneously illuminated.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: December 25, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Martin Richards
  • Patent number: 10133141
    Abstract: Consistent with the present disclosure, both arms of an MZ interferometer are “double-folded” and are bent in at least two locations to define first and second acute inner angles. Accordingly, the arms of the MZ interferometer may have substantially the same length, and, further, the MZ interferometer has a more compact geometry. In one example, the arms parallel each other and have a serpentine shape, and, in a further embodiment, the arms parallel one another and have a Z-shape. Accordingly, since the temperature of a PIC upon which the MZ interferometer is provided does not vary significantly over such short distances, the temperatures of both arms is substantially the same.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: November 20, 2018
    Assignee: Infinera Corporation
    Inventors: Peter W. Evans, Scott Corzine, Mehrdad Ziari, Pavel V. Studenkov, Masaki Kato, Charles H. Joyner
  • Patent number: 10126496
    Abstract: In accordance with the present invention the switching element of an optical switch for switching/modulating an optical signal from one optical waveguide to another is a reverse bias diode. More particularly, the diode is itself an optical waveguide that has been doped to create a predetermined depletion width, Wd, between the N-type and IP-type regions of the diode. In operation, an optical signal is input into the waveguide/diode in a manner that generates a second order mode for the optical signal. The second order mode optical signal then transits the waveguide/diode back and forth through the depletion width Wd. A switching voltage, V?, which is selectively applied to the waveguide/diode, can then alter the depletion width Wd of the waveguide/diode. Consequently, the propagation interference distance, ?c, of the waveguide/diode will also be changed, to thereby direct the optical signal from one output optical filter to another.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: November 13, 2018
    Inventor: Chen-Kuo Sun
  • Patent number: 10110313
    Abstract: The present invention discloses an optical switching apparatus, an optical cross-connect node, and an optical signal switching method. The optical switching apparatus includes: N input ports, N OAM modulators in a one-to-one correspondence with the N input ports, an OAM splitter, and M output ports, where the M output ports are in a one-to-one correspondence with M OAM modes; a first input port of the input ports is configured to input a first optical signal, a target output port of the first optical signal is a first output port; a first OAM modulator corresponding to the first input port modulates the first optical signal into an optical signal of a first OAM mode corresponding to the first output port; the OAM splitter transmits, to the first output port, the first optical signal received from the first OAM modulator; and the first output port outputs the first optical signal.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: October 23, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Dawei Wang
  • Patent number: 10110302
    Abstract: An optical device comprises a transmitter module, a receiver module, and a switch comprising a first port coupled to the transmitter module, a second port coupled to the receiver module, a third port configured to couple to a transmitter fiber, and a fourth port configured to couple to a receiver fiber. A method implemented in a switch, the method comprising operating in a monitor mode that provides for monitoring of a transmitter fiber or a receiver fiber, receiving a command to transition from the monitor mode to a data mode, connecting a transmitter module to the transmitter fiber, and connecting a receiver module to the receiver fiber.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: October 23, 2018
    Assignee: Huawai Technologies Co., Ltd.
    Inventors: Mohammad Mehdi Mansouri Rad, Eric Bernier, Dominic John Goodwill
  • Patent number: 10092903
    Abstract: The present invention discloses microfluidic devices with a valve-like structure (3), through which magnetic particles can be transported with minimal transport of fluids. This allows sequential processing of the magnetic particles.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: October 9, 2018
    Inventors: Menno Willem Jose Prins, Joost Hubert Maas, Albert Hendrik Jan Immink, Dirkjan Bernhard Van Dam, Maatje Koets, Michel J. M. Bruyninckx, Thea Van Der Wijk, Marius Iosif Boamfa, Remco Den Dulk
  • Patent number: 10089937
    Abstract: Described is using a combination of which a multi-view display is provided by a combining spatial multiplexing (e.g., using a parallax barrier or lenslet), and temporal multiplexing (e.g., using a directed backlight). A scheduling algorithm generates different views by determining which light sources are illuminated at a particular time. Via the temporal multiplexing, different views may be in the same spatial viewing angle (spatial zone). Two of the views may correspond to two eyes of a person, with different video data sent to each eye to provide an autostereoscopic display for that person. Eye (head) tracking may be used to move the view or views with a person as that person moves.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: October 2, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Andrew D. Wilson, Steven Bathiche
  • Patent number: 10090632
    Abstract: An example device in accordance with an aspect of the present disclosure includes a ring waveguide and bus waveguide. The ring waveguide has a first coupled portion associated with a first modal index, and the bus waveguide includes a second coupled portion associated with a second modal index. The second coupled portion is evanescently coupleable to the first coupled portion. A laser outcoupling and associated lasing output of the device is variable based on varying a difference between the first modal index and the second modal index to vary coupling between the first coupled portion and the second coupled portion, without varying modal indices of non-coupled portions of the ring waveguide and bus waveguide.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: October 2, 2018
    Assignee: Hewlett Packard Enterprise Development LP
    Inventor: Di Liang
  • Patent number: 10078185
    Abstract: A switch for selectively coupling light from two input fibers to a selected two of plurality of output optical fibers. The switch was designed to handle standard Fiber optical connectors which have been polished and meet the specifications for the optical performance. The duplex mechanical switch creates a method to physically switch two fibers (Duplex) to another two fibers (Duplex). The performance regarding insertion losses, back reflection, crosstalk, immunity against backscattering of light and insensitivity to the wavelength of the light is consistent with this mechanical switch.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: September 18, 2018
    Assignee: Nu Visions International, Inc.
    Inventors: Paul Chudoba, Michael Coppola
  • Patent number: 10079128
    Abstract: The present invention provides an integrated electro-mechanical actuator and a manufacturing method for manufacturing such an integrated electro-mechanical actuator. The integrated electro-mechanical actuator comprises an electrostatic actuator gap between actuator electrodes and an electrical contact gap between contact electrodes. An inclination with an inclination angle is provided between the actuator electrodes and the contact electrodes. The thickness of this electrical contact gap is equal to the thickness of a sacrificial layer which is etched away in a manufacturing process.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: September 18, 2018
    Assignee: International Business Machines Corporation
    Inventor: Michel Despont
  • Patent number: 10067294
    Abstract: The beam distributor includes a housing, at least one beam entrance, two or more beam exits, a motor, and a beam turning part fixed to a rotary axis member of the motor and changing a direction of a beam input to the inside of the housing through the beam entrance so as to guide the input beam to the beam exit. A rotary axis of the motor is arranged parallel to an optical axis of the beam so as to input the beam to the beam turning part at a constant angle independently of a rotational angle about the rotary axis of the motor. The beam exit is arranged in a direction to which the direction of the beam is changed by the beam turning part in response to rotation of the rotary axis member. A storage stores an angular information recorded in advance about the rotary axis.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: September 4, 2018
    Inventor: Munekazu Matsuda
  • Patent number: 10061087
    Abstract: A MEMS optical switch and a switching node are disclosed. The MEMS optical switch includes N1 input ports, N1 input MEMS mirrors, M1 output ports, and M1 output MEMS mirrors, where a first input port is configured to transmit a first optical signal to a first input MEMS mirror. The first input MEMS mirror is configured to reflect the first optical signal to a first destination output MEMS mirror, where along a straight line in which a first deflection axis is located, the first input MEMS mirror is located on an edge of the N1 input MEMS mirrors, and when reflecting the received first optical signal to a first output MEMS mirror and a second output MEMS mirror, the first input MEMS mirror deflects towards an opposite direction relative to a second deflection axis.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: August 28, 2018
    Inventors: Peng Zhang, Chendi Jiang
  • Patent number: 10054870
    Abstract: A surface-emitting laser includes an active layer on which a spacer layer is disposed, and a reflection mirror disposed on the spacer layer, including a current constriction layer that is a selectively-oxidized layer having been selectively oxidized. The current constriction layer is disposed at a position of a node of a standing-wave of an electric field of light oscillated at the active layer and is disposed away from an interface between the spacer layer and the reflection mirror by an optical distance of one-fourth of an oscillation wavelength at the active layer. The selectively-oxidized layer is made of AlGaAs. The reflection mirror includes at least one AlGaInP layer contacting the selectively-oxidized layer.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: August 21, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shinichi Harada, Naoto Jikutani, Kazuma Izumiya, Yusuke Okura
  • Patent number: 10048518
    Abstract: Methods and systems for a low-voltage integrated silicon high-speed modulator may include an optical modulator comprising first and second optical waveguides and two optical phase shifters, where each of the two optical phase shifters may comprise a p-n junction with a horizontal section and a vertical section and an optical signal is communicated to the first optical waveguide. A portion of the optical signal may then be coupled to the second optical waveguide. A phase of at least one optical signal in the waveguides may be modulated utilizing the optical phase shifters. A portion of the phase modulated optical signals may be coupled between the two waveguides, thereby generating two output signals from the modulator. A modulating signal may be applied to the phase shifters which may include a reverse bias.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: August 14, 2018
    Assignee: Luxtera, Inc.
    Inventors: Ali Ayazi, Kam-Yan Hon, Gianlorenzo Masini
  • Patent number: 10032052
    Abstract: Embodiments of the invention include delay line circuitry that is integrated with an organic substrate. Organic dielectric material and a plurality of conductive layers form the organic substrate. The delay line circuitry includes a piezoelectric transducer to receive a guided electromagnetic wave signal and to generate an acoustic wave signal to be transmitted with an acoustic transmission medium. An acoustic reflector is communicatively coupled to the acoustic transmission medium. The acoustic reflector receives a plurality of acoustic wave signals from the acoustic transmission medium and reflects acoustic wave signals to the piezoelectric transducer using the acoustic transmission medium. The transducer converts the reflected acoustic signals into electromagnetic waves which are then transmitted back through the antenna and decoded by the reader.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: July 24, 2018
    Assignee: Intel Corporation
    Inventors: Adel A. Elsherbini, Telesphor Kamgaing, Feras Eid, Vijay K. Nair, Georgios C. Dogiamis, Johanna M. Swan, Valluri R. Rao
  • Patent number: 10027426
    Abstract: According to one embodiment of the present invention, there is provided a photon generating apparatus including: a light source configured to emit light; an optical medium configured to generate a pair of photons from the light; a detector configured to detect one photon from the pair of photons and output a detection time of the photon; a buffer including an optical line and an optical switch disposed on an optical path of the photon, which is one photon except for the photon detected by the detector, of the pair of photons; and a processor configured to output a driving signal which controls the optical switch so that a delay occurs at the optical path using the detection time of the photon detected by the detector.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: July 17, 2018
    Assignee: Korea Research Institute of Standards and Science
    Inventors: Hee Su Park, Eun Joo Lee, Hee Jung Lee, Sang Min Lee
  • Patent number: 10018785
    Abstract: There is provided a modal distribution conditioner comprising the combination of a mandrel-wrapped optical fiber and an adjustable and fixable loop of optical fiber. It is noted that light entering the modal distribution conditioner is to be generally overfilled compared with the target encircled flux function (as defined by the Standard). The mandrel wrapping introduces macrobends to the optical fiber, inducing modal pre-filtering that roughly transforms the initially overfilled modal distribution to be close to compliance with the appropriate Standard. However, the modal distribution of light having traversed the fixed mandrel typically remains somewhat overfilled. The adjustable loop provides for the fine-tuning of the modal distribution, in conformity with the Standard. Once the requirements defined by the Standard are met, the adjustable loop may be secured in place such that modal distribution becomes fixed and remain stable.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: July 10, 2018
    Assignee: EXFO Inc.
    Inventors: Remi Fortin, Gang He