Patents Examined by Robert Tavlykaev
  • Patent number: 11175451
    Abstract: Embodiments include apparatuses, methods, and systems including a semiconductor photonic device having a waveguide disposed above a substrate. The waveguide has a first section including amorphous silicon with a first refractive index, and a second section including crystalline silicon with a second refractive index different from the first refractive index. The semiconductor photonic device further includes a heat element at a vicinity of the first section of the waveguide. The heat element is arranged to generate heat to transform the amorphous silicon of the first section of the waveguide to partially or completely crystallized crystalline silicon with a third refractive index. The amorphous silicon in the first section may be formed with silicon lattice defects caused by an element implanted into the first section. Other embodiments may also be described and claimed.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: November 16, 2021
    Assignee: Intel Corporation
    Inventors: Hasitha Jayatilleka, Harel Frish, Ranjeet Kumar, Haisheng Rong, John Heck
  • Patent number: 11169332
    Abstract: Fiber optic connectors, including SC connectors having a unitary housing that supports a ferrule and also allows for disengagement and release of the connector from, e.g., an adapter. The unitary housing includes a pair of release arms pivotal relative to a main body of the unitary housing, where pivoting of the release arms enables engagement and disengagement of corresponding latch arms in an adapter, for example.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: November 9, 2021
    Assignee: CommScope Technologies LLC
    Inventor: Michael James Ott
  • Patent number: 11168015
    Abstract: An optical fiber includes: a core; and a cladding layer disposed on an outer circumference of the core. A Cl concentration in the cladding layer is 0.029 wt % to 0.098 wt %. In the optical fiber, ?2??1?0 dB/km is satisfied at a wavelength of 430 nm where ?1 is a value of transmission loss before exposure of the optical fiber to hydrogen and ?2 is a value of transmission loss after the exposure.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: November 9, 2021
    Assignee: Fujikura Ltd.
    Inventor: Hisayuki Nakagome
  • Patent number: 11156858
    Abstract: An optical device includes an optical modulator on an optical IC chip. The optical modulator includes an optical waveguide, first and second wiring patterns that are formed along the optical waveguide and a polymer pattern. A portion of the polymer pattern is formed on the optical waveguide and located in a region between the first and second wiring patterns. Each of the first and second wiring patterns includes a modulation portion that is formed parallel to the optical waveguide, a pad portion, and a transition portion that connects the modulation portion and the pad portion. A shape of a region between the transition portion of the first wiring pattern and the transition portion of the second wiring pattern is a curve. The polymer pattern has a curved portion in the region between the transition portion of the first wiring pattern and the transition portion of the second wiring pattern.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: October 26, 2021
    Assignee: FUJITSU OPTICL COMPONENTS LIMITED
    Inventor: Masaki Sugiyama
  • Patent number: 11152748
    Abstract: Narrow width fiber optic connectors having spring loaded remote release mechanisms to facilitate access and usage of the connectors in high density arrays. A narrow width fiber optic connector comprises a multi-fiber connector, wherein a width of said narrow width fiber optic connector is less than about 5.25 mm, a housing configured to hold the multi-fiber connector and further comprising a connector recess, and a pull tab having a ramp area configured to disengage a latch of one of an adapter and an SFP from said connector recess. The pull tab may include a spring configured to allow the latch of one of the adapter and the SFP to engage with the connector recess.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: October 19, 2021
    Assignee: Senko Advanced Components, Inc.
    Inventors: Kazuyoshi Takano, Jeffrey Gniadek
  • Patent number: 11150497
    Abstract: A composite substrate for an electro-optic element is disclosed. The composite substrate includes: an electro-optic crystal substrate having an electro-optic effect; a low-refractive-index layer being in contact with the electro-optic crystal substrate and having a lower refractive index than the electro-optical crystal substrate; and a support substrate bonded to the low-refractive-index layer at least via a bonding layer. A plurality of interfaces located between the low-refractive-index layer and the support substrate includes at least one rough interface having a roughness that is larger than a roughness of an interface between the electro-optic crystal substrate and the low-refractive-index layer.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: October 19, 2021
    Assignee: NGK INSULATORS, LTD.
    Inventors: Yudai Uno, Tomoyoshi Tai, Jungo Kondo
  • Patent number: 11137543
    Abstract: Structures for a polarizer and methods of fabricating a structure for a polarizer. A first waveguide core includes a section and a taper connected to the section. A second waveguide core is laterally positioned adjacent to the taper of the first waveguide core. An absorber is connected to the section of the first waveguide core. The absorber is composed of germanium.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: October 5, 2021
    Assignee: GLOBALFOUNDRIES U.S. INC.
    Inventors: Yusheng Bian, Ajey Poovannummoottil Jacob
  • Patent number: 11137544
    Abstract: Methods and systems for grating couplers incorporating perturbed waveguides are disclosed and may include in a semiconductor photonics die, communicating optical signals into and/or out of the die utilizing a grating coupler on the die, where the grating coupler comprises perturbed waveguides. The perturbed waveguides may include rows of continuous waveguides with scatterers extending throughout a length of the perturbed waveguides a variable width along their length. The grating coupler may comprise a single polarization grating coupler comprising perturbed waveguides and a non-perturbed grating. The grating coupler may comprise a polarization splitting grating coupler (PSGC) that includes two sets of perturbed waveguides at a non-zero angle, or a plurality of non-linear rows of discrete shapes. The PSGC may comprise discrete scatterers at an intersection of the sets of perturbed waveguides. The grating coupler may comprise individual scatterers between the perturbed waveguides.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: October 5, 2021
    Assignee: Luxtera LLC
    Inventors: Lieven Verslegers, Attila Mekis
  • Patent number: 11131813
    Abstract: An optical connector (100) comprises one or more optical cables (110) disposed within a housing (120). Each optical In cable (110) includes an array of at least one optical waveguide (111) and at least one optical ferrule (112) attached to the array of optical waveguides (111). The housing (120) includes a first housing portion (121) and a second housing portion (122) engaged with the first housing portion (121). The second housing portion (122) comprises at least one carrier (130) and one frame (140). The carrier (130) and frame (140) of the second housing portion (122) are configured to support the one or more optical cables (110). The first housing portion (121) and the second housing portion (122) are configured such that mechanical engagement of the first housing portion (121) with the second housing portion (122) moves the carrier (130) relative to the frame (140). Movement of the carrier (130) relative to the frame (140) causes a bend in each optical waveguide (111) and rotation of each ferrule (112).
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: September 28, 2021
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Daniel F. Cronch, Sergio D. Carranza, Boon K. Lee, Michael A. Haase, Terry L. Smith
  • Patent number: 11111171
    Abstract: An optical fiber includes: a core; and a cladding layer disposed on an outer circumference of the core. A Cl concentration in the cladding layer is 0.029 wt % to 0.098 wt %. In the optical fiber, ?2??1?0 dB/km is satisfied at a wavelength of 430 nm where ?1 is a value of transmission loss before exposure of the optical fiber to hydrogen and ?2 is a value of transmission loss after the exposure.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: September 7, 2021
    Assignee: Fujikura Ltd.
    Inventor: Hisayuki Nakagome
  • Patent number: 11105978
    Abstract: Structures for a polarizer and methods of fabricating a structure for a polarizer. A first waveguide core has a first tapered section, a second tapered section, and a section positioned along a longitudinal axis between the first tapered section and the second tapered section. The first tapered section and the second tapered section each narrow in a direction along the longitudinal axis toward the section. A second waveguide core has a first terminating end, a second terminating end, and a section that is arranged between the first and second terminating ends. The section of the second waveguide core is positioned either over or below the section of the first waveguide core.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: August 31, 2021
    Assignee: GLOBALFOUNDRIES U.S. INC.
    Inventors: Yusheng Bian, Ajey Poovannummoottil Jacob
  • Patent number: 11106060
    Abstract: Disclosed are structures as well as methods of manufacture and operation of integrated optoelectronic devices that facilitate directly heating the diode or waveguide structures to regulate a temperature of the device while allowing electrical contacts to be placed close to the device to reduce the electrical resistance. Embodiments include, in particular, heterogeneous electro-absorption modulators that include a compound-semiconductor diode structure placed above a waveguide formed in the device layer of an SOI substrate.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: August 31, 2021
    Assignee: Juniper Networks, Inc.
    Inventors: Jonathan Edgar Roth, Erik Johan Norberg
  • Patent number: 11099324
    Abstract: In the optical waveguide device including an unnecessary-light waveguide for guiding unnecessary light emitted from a main waveguide, an emission waveguide connected to the unnecessary-light waveguide to emit the unnecessary light propagating through the unnecessary-light waveguide to the outside of the substrate is formed; an effective refractive index of the emission waveguide is set to be higher than an effective refractive index of the unnecessary-light waveguide; in a connection portion between the unnecessary-light waveguide and the emission waveguide, a centerline of the emission waveguide is inclined in a direction away from the main waveguide with respect to a centerline of the unnecessary-light waveguide; furthermore, in the connection portion, a position of the centerline of the emission waveguide is disposed to be shifted to a position further away from the main waveguide with respect to a position of the centerline of the unnecessary-light waveguide.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: August 24, 2021
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Yu Kataoka, Norikazu Miyazaki
  • Patent number: 11092746
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for tuning photonic device performance. In one aspect, a method includes receiving an initial photonic device configuration including multiple coupling structures and multiple photonic components. A first amount of light coupling between a first photonic component and a second photonic component of the multiple photonic components is received, which depends upon a subset of the coupling structures that are located between the first photonic component and the second photonic component. One or more coupling structures of the subset of coupling structures located between the first photonic component and the second photonic component are determined to be removed to cause the light coupling between the first photonic component and the second photonic component to change from the first amount of coupling to a target amount of coupling.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: August 17, 2021
    Assignee: X Development LLC
    Inventors: Brian John Adolf, Martin Friedrich Schubert
  • Patent number: 11092806
    Abstract: An image display apparatus includes a first waveguide, a second waveguide positioned at one side of the first waveguide, a first diffraction grating positioned at an other side of the first waveguide, a second diffraction grating positioned between the first waveguide and the second waveguide and a display engine configured to control a shape of the second diffraction grating according to a quantity of light diffracted from the first diffraction grating, wherein at least a portion of light incident on the first waveguide is diffracted from the first diffraction grating, and at least a portion of light incident on the second waveguide, is diffracted from the second diffraction grating.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: August 17, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Wonjun Lee, Kyusub Kwak, Kyookeun Lee, Myongjo Choi
  • Patent number: 11086059
    Abstract: An image light guide for conveying a virtual image has a waveguide that conveys image-bearing light, formed as a flat plate having an in-coupling diffractive optic with a first grating vector diffracting an image-bearing light beam into the waveguide and directing diffracted light. An out-coupling diffractive optic is formed as a plurality of overlapping diffraction gratings including a first grating pattern having first grating vector k1 and a second grating pattern having a second grating vector k2 for expanding and ejecting the expanded image bearing beams from the waveguide into an expanded eyebox within which the virtual image can be seen.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: August 10, 2021
    Assignee: Vuzix Corporation
    Inventors: Robert J. Schultz, Paul J. Travers
  • Patent number: 11086149
    Abstract: An electro-optic device is provided with a substrate, an optical waveguide formed of a lithium niobate film with a ridge shape on the substrate, and an electrode that applies an electric field to the optical waveguide. The optical waveguide includes a first waveguide section provided at least in an electric field application region applied with the electric field and having a thickness of 1 ?m or larger and a second waveguide section provided in a region other than the electric field application region and having a thickness of 0.3 ?m or larger and less than 1 ?m.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: August 10, 2021
    Assignees: TDK CORPORATION, FUJITSU OPTICAL COMPONENTS LIMITED
    Inventors: Shinji Iwatsuka, Kenji Sasaki, Hiroki Hara, Yasuhiro Ohmori, Masaharu Doi, Shintaro Takeuchi, Yoshihiko Yoshida, Yoshinobu Kubota
  • Patent number: 11067837
    Abstract: Devices, systems and methods are described that efficiently convert an incident light having a particular polarization into light having a plurality of polarizations that are distributed according to a particular pattern. For example, the output light can have a plurality of plurality of polarization states that are randomly distribute over the Poincaré sphere. One polarization scrambler includes a plurality of polarization elements positioned to receive polarized or partially polarized light. Each polarization element includes a half waveplate to rotate a polarization direction of the polarized or partially polarized light, and a quarter waveplate to receive light that exits the first layer and to change a polarization state of the light that exits the first layer to another polarization state. The polarization scrambler further includes a substrate to receive the light after exiting the quarter waveplate, and to provide the output light that includes a plurality of polarization states.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: July 20, 2021
    Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
    Inventor: Stanley Pau
  • Patent number: 11054674
    Abstract: A modulator. In some embodiments, the modulator includes a portion of an optical waveguide, the waveguide including a rib extending upwards from a surrounding slab. The rib may have a first sidewall, and a second sidewall parallel to the first sidewall. The rib may include a first region of a first conductivity type, and a second region of a second conductivity type different from the first conductivity type. The second region may have a first portion parallel to and extending to the first sidewall, and a second portion parallel to the second sidewall. The first region may extend between the first portion of the second region and the second portion of the second region.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: July 6, 2021
    Assignee: Rockley Photonics Limited
    Inventors: Dong Yoon Oh, David Arlo Nelson, Pradeep Srinivasan, Amit Singh Nagra, Aaron John Zilkie, Jeffrey Driscoll, Aaron L. Birkbeck
  • Patent number: 11054675
    Abstract: Provided is an optical modulator which is small in optical loss, is small in a size, and is low in required voltage and is operable to perform high-speed operation. The optical phase modulator 100 comprises a rib-type waveguide structure 110 including: a PN junction 106 which is formed of Si and is formed in a lateral direction on a substrate; and an Si1-xGex layer 108 which is constituted of at least one layer and is doped with an impurity to a p-type and is superposed on the PN junction 106 so as to be electrically connected to the PN junction 106. The rib-type waveguide structure 110 has a substantially uniform structure along a light propagation direction, and in a direction parallel with the substrate and perpendicular to the light propagation direction, a position of a junction interface 106a of the PN junction 106 is offset from a center of the Si1-xGex layer 108.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: July 6, 2021
    Assignees: PHOTONICS ELECTRONICS TECHNOLOGY RESEARCH ASSOCIATION, THE UNIVERSITY OF TOKYO
    Inventors: Junichi Fujikata, Shigeki Takahashi, Mitsuru Takenaka