Patents Examined by John Bedtelyon
  • Patent number: 11506918
    Abstract: An EO polymer modulator with conformal atomic layer deposition sealant layers including an active region of a device material stack with an elongated tapered active section positioned on a passive waveguide core. The device material stack supported on a substrate with the passive waveguide core defining light input and light output side surfaces. A conformal atomic layer deposition sealant layer overlying the device material stack including the light input and light output side surfaces, the conformal atomic layer deposition sealant layer defining windows for the light input and light output side surfaces.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: November 22, 2022
    Assignee: Lightwave Logic Inc
    Inventors: Michael Lebby, Zhiming Liu, Baoquan Chen
  • Patent number: 11506839
    Abstract: A beam deflection device includes multiple light-emission structures arranged adjacent to each other in a first direction (X direction). The light-emission structures are each configured to be capable of emitting, from its device surface, a line beam that extends in the first direction in the far field. Furthermore, the light-emission structures are each configured to allow the line beam to be scanned in a second direction (Y direction) that is orthogonal to the first direction.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: November 22, 2022
    Inventors: Fumio Koyama, Xiaodong Gu
  • Patent number: 11489611
    Abstract: An approach for realizing low-power, high-port-count optical switching systems, such as OXCs, WXCs, and ROADMs is presented. Optical switching systems in accordance with the present disclosure include arrangements of frequency-filter blocks, each of which includes a cascaded arrangement of tunable couplers and tunable Mach-Zehnder Interferometers (MZIs) that provides a substantially flat-top broadband transfer function for the frequency-filter block. The tunability for these devices is achieved by operatively coupling a low-power-dissipation phase controller, such as a stress-optic phase controller or liquid-crystal-based phase controller with one arm of the device, thereby enabling control over the coupling coefficient of the device.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: November 1, 2022
    Assignee: LioniX International BV
    Inventors: Ruud Michiel Oldenbeuving, Chris Gerardus Hermanus Roeloffzen, Caterina Taddei, René Gerrit Heideman
  • Patent number: 11486775
    Abstract: Embodiments of the present invention include a system and method for detecting or sensing damage within a target material, as well as related devices. In some embodiments, a damage sensing system including a target material, an optical fiber embedded into the target material, where the optical fiber has an outer surface running the length of the optical fiber, a photosensitive receiver, and a triboluminescent coating coated on the optical fiber.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: November 1, 2022
    Assignee: Florida A&M University
    Inventors: Tarik J. Dickens, Kunal Joshi, Phong Tran
  • Patent number: 11480817
    Abstract: Various embodiments of a coplanar waveguide (CPW) transmission line as well as a silicon-based electro-optic (E-O) modulator comprising the CPW transmission line are described. The CPW transmission line has a curved or winding shape. The silicon-based E-O modulator includes a rib optical waveguide, a beam splitter, a beam combiner, and a CPW transmission line that exhibits the winding shape. At least one of the two optical arms of the rib optical waveguide alternately and periodically extends through a first groove and a second groove of the CPW transmission line. The plurality of active sections of the rib optical waveguide are evenly distributed on both sides of the CPW transmission line to suppress undesired transmission modes. An increased length of transmission path of the rib optical waveguide is also avoided or minimized, thereby reducing the transmission speed mismatch of the E-O modulator, which is essential for achieving high-speed operation.
    Type: Grant
    Filed: March 6, 2021
    Date of Patent: October 25, 2022
    Inventors: Yadong Liu, Pengfei Cai, Tzung-I Su, Dong Pan
  • Patent number: 11480818
    Abstract: An optical scan device includes an optical waveguide array, including a plurality of optical waveguides each of which propagates light along a first direction, that emits a light beam, the plurality of optical waveguides being arranged in a second direction that intersects the first direction, a phase shifter array including a plurality of phase shifters connected separately to each of the plurality of optical waveguides, a control circuit that controls a phase shift amount of each of the plurality of phase shifters and/or inputting of light to each of the plurality of phase shifters and thereby controls a direction and shape of the light beam that is emitted from the optical waveguide array, a photodetector that detects the light beam reflected by a physical object, and a signal processing circuit that generates distance distribution data on the basis of output from the photodetector.
    Type: Grant
    Filed: January 18, 2021
    Date of Patent: October 25, 2022
    Inventors: Yasuhisa Inada, Atsushi Ishikawa, Yumiko Kato
  • Patent number: 11480843
    Abstract: An optical transmitter includes a Mach-Zehnder modulator having an arm waveguide and a phase controller configured to control a phase of a light propagating through the arm waveguide by applying a voltage to the Mach-Zehnder modulator. When the voltage is deviated from a predetermined range, the phase controller shifts the voltage in the direction opposite to a direction of the deviation from the predetermined range by the amount corresponding to a change of 2? in the phase.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: October 25, 2022
    Inventor: Tsutomu Ishikawa
  • Patent number: 11474316
    Abstract: The invention relates to a device for coupling a flared laser source (10) and an output waveguide (3), comprising a coupler (20), a combiner (40), and a network of intermediate waveguides (30) located between the coupler and the combiner and comprising a correcting central section (Sc) in which an effective index associated with the guided modes is adjusted so that the optical paths of the intermediate waveguides (30) between the coupler (20) and the combiner (40) are identical to one another.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: October 18, 2022
    Assignee: Commissariat à l'Energie Atomique et aux Energies Alternatives
    Inventors: Sylvain Guerber, Daivid Fowler, Bertrand Szelag
  • Patent number: 11460329
    Abstract: A sensor system for detection and localisation of changes in or values for at least one environmental condition includes a source of pulses of electromagnetic radiation, wherein the source is configured to emit electromagnetic radiation at a plurality of different wavelengths, an optical fibre in optical communication with the source of pulses, wherein the optical fibre includes a fibre Bragg grating having a reflectance and/or transmittance which varies in dependence on the at least one environmental condition, and a detection unit for detecting electromagnetic radiation which has been reflected or transmitted by the fibre Bragg gratings, wherein the detection unit is configured for detecting electromagnetic radiation at the plurality of wavelengths, such that a spectral response can be determined for different spatial regions along the optical fibre, wherein a change in or value for the environmental condition at a spatial region may be determined by monitoring the respective spectral response.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: October 4, 2022
    Inventors: Benjamin Marx, Alexander Rath, Wieland Hill, Stefan Breuer
  • Patent number: 11460642
    Abstract: An on-chip optical switch based on an echelle grating and a phase tuning element is described herein. The phase tuning element may change a refractive index of the material through which an optical signal propagates, thereby causing a change in the angle of propagation of the optical signal. By dynamically tuning the phase change element, the refractive index change may be controlled such that the deviation of the optical signal causes the optical signal to be focused on a particular coupling waveguide out of an array of coupling waveguides. The echelle grating with the active phase change element form a configurable optical switch capable of switching an optical signal between two or more coupling waveguides, that may be respectively connected to different optical signal processing pathways.
    Type: Grant
    Filed: January 9, 2021
    Date of Patent: October 4, 2022
    Assignee: SiLC Technologies, Inc.
    Inventors: Shuren Hu, Amir Hanjani, Chen Chen, Mehdi Asghari, Bradley Jonathan Luff
  • Patent number: 11454758
    Abstract: Apparatus and methods for improving optical signal collection in an integrated device are described. A microdisk can be formed in an integrated device and increase collection and/or concentration of radiation incident on the microdisk and re-radiated by the microdisk. An example integrated device that can include a microdisk may be used for analyte detection and/or analysis. Such an integrated device may include a plurality of pixels, each having a reaction chamber for receiving a sample to be analyzed, an optical microdisk, and an optical sensor configured to detect optical emission from the reaction chamber. The microdisk can comprise a dielectric material having a first index of refraction that is embedded in one or more surrounding materials having one or more different refractive index values.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: September 27, 2022
    Assignee: Quantum-Si Incorporated
    Inventors: Ali Kabiri, Bing Shen, Gerard Schmid, James Beach, Kyle Preston, Sharath Hosali
  • Patent number: 11454859
    Abstract: Time delay devices for producing tunable time delays in optical signals. Cascades of the time delay devices can be used for beam steering in phased-array antennas. The time delay may be produced by selecting a time delay between an input and output of the time delay device from any of the time delay obtained by all four-port switches of the time delay device being in an OFF state and time delays obtainable by switching any one of the four-port switches to an ON state; and producing the selected time delay between the input and output of the time delay device by performing any of avoiding an application of an electrical control signal to any of electro-optic switch elements of the time delay device and applying the electrical control signal to one of the electro-optic switch elements that corresponds to a four-port coupler corresponding to the selected time delay.
    Type: Grant
    Filed: May 5, 2021
    Date of Patent: September 27, 2022
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Sang-Yeon Cho, Weimin Zhou
  • Patent number: 11448838
    Abstract: There is provided an optical element mounted on a substrate and an optical coupling element mounted on the substrate. The optical coupling element includes a guide unit extending in a direction parallel to a plane of the substrate so as to fix an optical fiber. There is provided a mold resin layer formed on the substrate so as to cover the optical element and expose a side surface of the optical coupling element at one end of the guide unit. The optical element includes a light incidence/emission unit on a side surface perpendicular to the plane of the substrate, and the other end of the guide unit and the light incidence/emission unit are disposed to face each other.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: September 20, 2022
    Inventors: Hitoshi Wakita, Kota Shikama, Yuta Ueda, Hiroyuki Ishii, Takushi Kazama, Koji Takeda, Shigeru Kanazawa
  • Patent number: 11442276
    Abstract: An optical device, having at least first and second light-transmitting substrates, each having at least two external surfaces and an input aperture and an output aperture. The external surface of the first light-transmitting substrate is optically cemented to an external surface of the second light-transmitting substrate by an optical adhesive defining an interface plane. The refractive index of the optical adhesive is substantially lower than the refractive index of the first substrate. Part of the light waves entering the device through the input aperture and exiting the device through the output aperture impinge on the interface plane of the first substrate having incidence angles smaller than the critical angle. Another part of the light waves impinging on the interface plane have incidence angles higher than the critical angle. The interface plane is substantially transparent for the light waves impinging on interface plane having incidence angles smaller than the critical angle.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: September 13, 2022
    Assignee: OORYM OPTICS LTD.
    Inventors: Yaakov Amitai, Nadav Amitai
  • Patent number: 11435603
    Abstract: A thin film polymer device including a waveguide core surrounded by dielectric material positioned on a platform. The core has a passive input portion and a passive output portion joined by a necked down active portion. A layer of EO polymer material positioned on the dielectric material overlying the active portion of the core and the core, the EO polymer, and the dielectric material all having refractive indices with the refractive index of the EO polymer being higher than the refractive index of the dielectric material. Light progressing through the core from the passive input portion to the passive output portion transitions to the layer of EO polymer material as it enters the necked down active portion and transitions back to the core as it leaves the necked down active portion.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: September 6, 2022
    Inventors: Frederick J. Leonberger, Karen Liu, Michael Lebby
  • Patent number: 11435529
    Abstract: Provided is an optical fiber holder comprising a holder body and a cover. The holder body has an accommodation section capable of accommodating a plurality of optical fibers. The holder body or the cover has at least one ridge which can be disposed within the accommodation section. When the cover is closed over the holder body, a plurality of sections which can parallelly accommodate the plurality of optical fibers are parallelly formed by the inner surface of the accommodation section, the lower surface of the cover, and the ridge.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: September 6, 2022
    Inventors: Ryuichiro Sato, Hiroshi Takayanagi, Hiroshi Nakamura
  • Patent number: 11435524
    Abstract: A photonic integrated circuit (PIC) includes a semiconductor substrate, one or more passive components, and one or more active components. The one or more passive components are fabricated on the semiconductor substrate, wherein the passive components are fabricated in a III-V type semiconductor layer. The one or more active components are fabricated on top of the one or more passive components, wherein optical signals are communicated between the one or more active components via the one or more passive components.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: September 6, 2022
    Inventors: John E. Bowers, Arthur Gossard, Daehwan Jung, Justin Norman, Chen Shang, Yating Wan
  • Patent number: 11435604
    Abstract: An EO polymer modulator including a substrate with a cladding layer formed on a surface and a passive waveguide core, having a cross-sectional area, formed in the cladding layer and including an elongated tapered active section. An elongated trench in the cladding layer, the elongated tapered active section of the waveguide core positioned in the elongated trench, electrodes positioned on a surface of the cladding layer on opposite sides of the elongated trench, and an elongated strip of EO polymer overlying the elongated tapered active section of the waveguide core. The elongated strip of EO polymer positioned between and parallel with the electrodes and coplanar with the electrodes.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: September 6, 2022
    Inventors: Michael Lebby, Zhiming Liu, Baoquan Chen
  • Patent number: 11429006
    Abstract: Disclosed is a silicon photonics-based optical transmission apparatus. The apparatus includes an optical modulator chip of a ground-signal-ground (GSG) electrode array including two phase shifters for differential driving, a sub-substrate including a metal electrode of a periodic pattern to connect two ground metal electrodes to each other at a GSG electrode connected to each of the two phase shifters, and a solder bump having a same periodic pattern as the metal electrode of the sub-substrate to connect the ground metal electrodes of the optical modulator chip and the metal electrode of the periodic pattern of the sub-substrate.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: August 30, 2022
    Inventors: Sanghwa Yoo, Heuk Park, Joon Ki Lee
  • Patent number: 11422319
    Abstract: A multi-fiber, fiber optic connector may include a reversible keying arrangement for determining the orientation for plugging the connector into an adapter to thereby allow for a change in polarity of the connection to be made on site. The connector housing may be configured to engage with a removable key that may be engaged with the housing in at least two different locations to provide the plug-in orientation, or the housing may have slidably displaceable keys movable between multiple positions on the housing.
    Type: Grant
    Filed: October 20, 2021
    Date of Patent: August 23, 2022
    Assignee: Senko Advanced Components, Inc.
    Inventors: Jeffrey Gniadek, Kim Man Wong, Yim Wong, Jimmy Chang