Channel Waveguide Patents (Class 385/132)
  • Patent number: 12006206
    Abstract: Embodiments described herein include systems and techniques for converting (i.e., transducing) a quantum-level (e.g., single photon) signal between the three wave forms (i.e., optical, acoustic, and microwave). A suspended crystalline structure is used at the nanometer scale to accomplish the desired behavior of the system as described in detail herein. Transducers that use a common acoustic intermediary transform optical signals to acoustic signals and vice versa as well as microwave signals to acoustic signals and vice versa. Other embodiments described herein include systems and techniques for storing a qubit in phonon memory having an extended coherence time. A suspended crystalline structure with specific geometric design is used at the nanometer scale to accomplish the desired behavior of the system.
    Type: Grant
    Filed: July 15, 2022
    Date of Patent: June 11, 2024
    Assignee: California Institute of Technology
    Inventors: Oskar Painter, Jie Luo, Michael T. Fang, Alp Sipahigil, Paul B. Dieterle, Mahmoud Kalaee, Johannes M. Fink, Andrew J. Keller, Gregory MacCabe, Hengjiang Ren, Justin D. Cohen
  • Patent number: 11988869
    Abstract: A photonic buried interposer for converting light between a first optical mode of a first optical component and a second optical mode of a second optical component, the second optical component being larger than the first optical component; the buried interposer comprising a bi-layer taper, the bi-layer taper comprising: a top device layer comprising an upper tapered waveguide; and a bottom device layer comprising a lower tapered waveguide; wherein the upper tapered waveguide extends from a first end for coupling to the first optical component to a second end for coupling to the second optical component; and the lower tapered waveguide starts from an intermediate location between the first and second ends and extends from the intermediate location to the second end.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: May 21, 2024
    Assignee: Rockley Photonics Limited
    Inventor: Yangyang Liu
  • Patent number: 11899240
    Abstract: Photonic device, system and methods of making photonic devices and systems, the method including: providing a substrate, forming an insulator layer over the substrate, depositing a plurality of waveguide layers and a plurality of insulator spacers at different vertical levels over the insulator layer, wherein adjacent waveguide layers in the plurality of waveguide layers are isolated by one or more insulator spacers in the plurality of insulator spacers, and forming a plurality of waveguide patterns at the plurality of waveguide layers, wherein at least two waveguide patterns at different vertical levels in the plurality of waveguide patterns are coupled.
    Type: Grant
    Filed: June 9, 2022
    Date of Patent: February 13, 2024
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Weiwei Song, Stefan Rusu
  • Patent number: 11892680
    Abstract: Structures for an edge coupler and methods of fabricating a structure for an edge coupler. The structure comprises an edge coupler including a first waveguide core and a second waveguide core. The first waveguide core is positioned in a vertical direction between the second waveguide core and a substrate. The first waveguide core has a first longitudinal axis, the second waveguide core has a second longitudinal axis, and the second longitudinal axis of the second waveguide core is slanted at an angle relative to the first longitudinal axis of the first waveguide core.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: February 6, 2024
    Assignee: GlobalFoundries U.S. Inc.
    Inventor: Yusheng Bian
  • Patent number: 11852474
    Abstract: A method including: scanning a sample over a period of time using an electro-magnetic radiation source, the period of time including a first time period and a second time period, a sample portion of the electro-magnetic radiation source being directed to the sample in a sample arm of an optical interferometric system, and a reference portion of the electro-magnetic radiation source being directed to a reference arm of the optical interferometric system; applying, using a phase modulator, a phase shift comprising a first phase shift and a second phase shift to at least one of the reference portion or the sample portion of the electro-magnetic radiation source, the first phase shift being applied during the first time period and the second phase shift being applied during the second time period, the second phase shift having a difference of 90 degrees from the first phase shift; acquiring in-phase data based on a first interference between first backscattered electro-magnetic radiation during the first time per
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: December 26, 2023
    Assignee: The General Hospital Corporation
    Inventors: Benjamin J. Vakoc, Norman Lippok
  • Patent number: 11709315
    Abstract: A three-dimensional photonic integrated structure includes a first semiconductor substrate and a second semiconductor substrate. The first substrate incorporates a first waveguide and the second semiconductor substrate incorporates a second waveguide. An intermediate region located between the two substrates is formed by a one dielectric layer. The second substrate further includes an optical coupler configured for receiving a light signal. The first substrate and dielectric layer form a reflective element located below and opposite the grating coupler in order to reflect at least one part of the light signal.
    Type: Grant
    Filed: December 2, 2021
    Date of Patent: July 25, 2023
    Assignee: STMicroelectronics (Crolles 2) SAS
    Inventors: Frederic Boeuf, Charles Baudot
  • Patent number: 11693290
    Abstract: An optical waveguide device includes a substrate on which an intermediate layer, a thin-film LN layer of lithium niobate, and a buffer layer are stacked; an optical waveguide formed in the thin-film LN layer; and a plurality of electrodes near the optical waveguide. The intermediate layer and the buffer layer contain a same material of a metal element of any one of group 3 of group 18 of a periodic table of elements.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: July 4, 2023
    Assignee: Fujitsu Optical Components Limited
    Inventors: Shuntaro Makino, Yoshinobu Kubota, Yasuhiro Ohmori, Masaharu Doi, Teruo Kurahashi, Shintaro Takeuchi
  • Patent number: 11693291
    Abstract: An optical waveguide device has a substrate, an intermediate layer, a thin-film LN layer containing an X-cut lithium niobate, and a buffer layer stacked on the substrate, and an optical waveguide having a ridge shape formed in the thin-film LN layer. The optical waveguide device includes a plurality of electrodes provided, respectively, at a first side and a second side of the optical waveguide. The electrodes are disposed so that respective bottom surfaces thereof are at positions lower than a position of a surface of the buffer layer.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: July 4, 2023
    Assignee: Fujitsu Optical Components Limited
    Inventors: Shuntaro Makino, Yoshinobu Kubota, Yasuhiro Ohmori, Masaharu Doi, Shintaro Takeuchi
  • Patent number: 11681099
    Abstract: The present invention provides a method for fabricating KTP nonlinear racetrack micro-ring resonator, composed of six steps: KTP wafer processing, ion implantation, electron beam exposure, subsequent processing, reactive ion etching and final processing. A thin-film waveguide structure similar to the on-insulator lithium niobate thin-film can be achieved through only one process of ion implantation, which enables significantly simplified procedure, shortened time, and reduced cost. Meanwhile, the KTP micro-ring resonator produced according to the present invention has an optical damage threshold several times higher than the existing lithium niobate micro-ring resonator. It can output nonlinear frequency converted light to the power of milliwatts, and suitable for the case where both the input and output optical signals are pulsed lasers.
    Type: Grant
    Filed: September 19, 2022
    Date of Patent: June 20, 2023
    Assignee: SHANDONG NORMAL UNIVERSITY
    Inventors: Chen Chen, Zhanghua Han
  • Patent number: 11652176
    Abstract: An imaging device may include single-photon avalanche diodes (SPADs). To improve the sensitivity and signal-to-noise ratio of the SPADs, light scattering structures may be formed in the semiconductor substrate to increase the path length of incident light through the semiconductor substrate. The light scattering structures may include a low-index material formed in trenches in the semiconductor substrate. One or more microlenses may focus light onto the semiconductor substrate. Areas of the semiconductor substrate that receive more light from the microlenses may have a higher density of light scattering structures to optimize light scattering while mitigating dark current.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: May 16, 2023
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Swarnal Borthakur, Marc Allen Sulfridge, Andrew Eugene Perkins
  • Patent number: 11586059
    Abstract: An optical modulator includes a rib; and a slab interconnected to both sides of the rib; wherein the rib is dimensioned relative to the slab to support guiding of a Transverse Magnetic (TM) mode with a main lobe that propagates orthogonal to the slab and with the main lobe substantially excluded from the slab. The rib guides wavelengths in an infrared range in the TM mode. A height of the rib, relative to the slab, is about half of a width of the rib, between the slab.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: February 21, 2023
    Assignee: Ciena Corporation
    Inventors: Alexandre D. Simard, Yves Painchaud
  • Patent number: 11555963
    Abstract: Structures for an optical power splitter and methods of forming a structure for an optical power splitter. The structure includes a first waveguide core having a first arm, a second waveguide core including a second arm, and a third waveguide core having a third arm laterally positioned between the first arm and the second arm. The third arm has a longitudinal axis. The first arm is longitudinally offset from the third arm parallel to the longitudinal axis such that the third arm and the first arm are laterally adjacent over a first overlap distance. The second arm is longitudinally offset from the third arm parallel to the longitudinal axis such that the third arm and the second arm are laterally adjacent over a second overlap distance. The first overlap distance is greater than the second overlap distance to provide an overlap offset.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: January 17, 2023
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Subramanian Krishnamurthy, Yusheng Bian
  • Patent number: 11543589
    Abstract: Aspects of the present disclosure are directed to process flow to fabricate a waveguide structure with a silicon nitride core having atomic-level smooth sidewalls achieved by wet etching instead of the conventional dry etching process.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: January 3, 2023
    Assignee: Anello Photonics, Inc.
    Inventor: Avi Feshali
  • Patent number: 11543688
    Abstract: A waveguide component includes a waveguide, which is at least partially transparent or translucent with respect to light and is set up in such a way that light can be conducted at least partially through the waveguide. The waveguide includes a waveguide core, a first casing region, and a second casing region. The waveguide core is formed from one or more spatially separated elements of at least one waveguide core material. The first casing region, which includes at least one electro-optical material, interacts with light guided in the waveguide. The first casing region is disposed around the one or more elements of the waveguide core. The second casing region includes at least one dielectric material. The second casing region is arranged around the first casing region and/or the waveguide core. The waveguide component further includes at least two line regions that are at least partially electrically conductive.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: January 3, 2023
    Assignee: KARLSRUHER INSTITUT FUER TECHNOLOGIE
    Inventors: Wolfgang Freude, Christian Koos, Matthias Lauermann, Sandeep Ummethala
  • Patent number: 11536904
    Abstract: An optical subassembly includes a planar dielectric waveguide structure that is deposited at temperatures below 400 C. The waveguide provides low film stress and low optical signal loss. Optical and electrical devices mounted onto the subassembly are aligned to planar optical waveguides using alignment marks and stops. Optical signals are delivered to the submount assembly via optical fibers. The dielectric stack structure used to fabricate the waveguide provides cavity walls that produce a cavity, within which optical, optoelectronic, and electronic devices can be mounted. The dielectric stack is deposited on an interconnect layer on a substrate, and the intermetal dielectric can contain thermally conductive dielectric layers to provide pathways for heat dissipation from heat generating optoelectronic devices such as lasers.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: December 27, 2022
    Inventors: William Ring, Miroslaw Florjanczyk
  • Patent number: 11532574
    Abstract: Embodiments may relate to a semiconductor package that includes a die and a package substrate. The package substrate may include one or more cavities that go through the package substrate from a first side of the package substrate that faces the die to a second side of the package substrate opposite the first side. The semiconductor package may further include a waveguide communicatively coupled with the die. The waveguide may extend through one of the one or more cavities such that the waveguide protrudes from the second side of the package substrate. Other embodiments may be described or claimed.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: December 20, 2022
    Assignee: Intel Coropration
    Inventors: Aleksandar Aleksov, Georgios Dogiamis, Telesphor Kamgaing, Gilbert W. Dewey, Hyung-Jin Lee
  • Patent number: 11460555
    Abstract: A thermal-optical phase shifter includes a substrate layer, a cladding layer, and a beam in the cladding layer. The thermal-optical phase shifter includes a waveguide and a heating element disposed in the beam. The thermal-optical phase shifter includes a thermally conductive structure disposed on the cladding layer to disperse heat from the beam. The thermally conductive structure may include a metal strip disposed longitudinally along the beam, may include thermally conductive pads, and/or may include thermally conductive vias coupled between the cladding layer and the substrate layer. The thermal-optical phase shifter may be incorporated into light detection and ranging (LIDAR) devices, telecommunications devices, and/or computing devices.
    Type: Grant
    Filed: December 5, 2021
    Date of Patent: October 4, 2022
    Assignee: OURS Technology, LLC
    Inventors: James Ferrara, Sen Lin
  • Patent number: 11427731
    Abstract: The invention relates generally to use of a silicon oxynitride film which exhibits desirable physical and chemical properties; superiority in adhesion to metals including noble metals and other metals, transparent conductive oxides, and semiconductor materials compared to silicon dioxide and silicon nitride; is wet-etchable, dry-etchable, or both; and operates as a high-performance overcoat barrier dielectric. The silicon oxynitride film meets performance requirements via a process that does not require an adhesion layer for deposition, and does not contaminate, obscure, or damage the device through incorporation or processing of additional adhesion layers.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: August 30, 2022
    Assignee: Teledyne Micralyne, Inc.
    Inventor: Glen Fitzpatrick
  • Patent number: 11402752
    Abstract: A method of fabricating an optical connection to at least one planar optical waveguide integrated on a planar integrated circuit (PIC) uses a machine vision system or the like to detect one or more positions at which one or more optical connections are to be made to at least one planar optical waveguide located on the PIC. A spatial light modulator (SLM) is used as a programmable photolithographic mask through which the optical connections are written in a volume of photosensitive material using a photolithographic process. The SLM is programmed to expose the photosensitive material to an illumination pattern that defines the optical connections. The programming is based at least in part on the positions that have been detected by the vision system. The optical connections are printed by exposing the photosensitive material to illumination that is modulated by the pattern with which the SLM is programmed.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: August 2, 2022
    Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
    Inventors: Thomas L. Koch, Robert A. Norwood, Stanley K. H. Pau, Nasser N. Peyghambarian
  • Patent number: 11385400
    Abstract: The material stack of the present disclosure can be used for fabricating optical waveguides that are thin and flexible, and that can bend light around small turns. The stack of materials can include a polymer core and a cladding, which together can create a large difference in refractive index. As a result, light can remain within the core even when bent around radii where standard glass fibers could fail.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: July 12, 2022
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Jesse J. Wheeler, Joseph J. Register, Parshant Kumar, Carlos A. Segura, Charles A. Lissandrello, John J. LeBlanc
  • Patent number: 11360335
    Abstract: An optical waveguide apparatus, a control method for the optical waveguide apparatus, and a storage medium are described in the disclosure. In one example implementation, an optical waveguide apparatus includes a control component and a waveguide structure. The waveguide structure includes m input interfaces and n output interfaces, where both m and n are integers greater than 1. The waveguide structure includes a first waveguide layer and a second waveguide layer, where an optical waveguide exists in the second waveguide layer. The control component is configured to control the first waveguide layer to form an optical waveguide, and the optical waveguide and an optical waveguide in the second waveguide layer form a cross-layer optical signal path.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: June 14, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Shiyi Cao
  • Patent number: 11347003
    Abstract: Aspects described herein include an optical apparatus comprising a plurality of light-carrying media, a wavelength division multiplexing (WDM) device optically coupled with the plurality of light-carrying media, and a lens arranged between the WDM device and a multicore optical fiber. An arrangement of the plurality of light carrying media and the WDM device are selected to align each of the plurality of light-carrying media with a respective optical core of the multicore optical fiber.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: May 31, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Norbert Schlepple, Jock T. Bovington
  • Patent number: 11342723
    Abstract: A fiber optic assembly includes: a gain fiber configured to output signal light; a first taper configured to expand the signal light output by the gain fiber; and a reversing prism configured to receive counter-pumping light and output the counter-pumping light into the first taper. The first taper is further configured to direct the counter-pumping light towards the gain fiber.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: May 24, 2022
    Assignee: OPTICAL ENGINES, INC.
    Inventor: Donald Lee Sipes, Jr.
  • Patent number: 11275207
    Abstract: Structures for a waveguide bend and methods of fabricating a structure for a waveguide bend. A waveguide core has a first section, a second section, and a waveguide bend connecting the first section with the second section. The waveguide core includes a first side surface extending about an inner radius of the waveguide bend and a second side surface extending about an outer radius of the waveguide bend. A curved strip is arranged over the waveguide bend adjacent to the first side surface or the second side surface.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: March 15, 2022
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Yusheng Bian, Ajey Poovannummoottil Jacob
  • Patent number: 11269174
    Abstract: Sub-diffraction endoscopic modal imaging systems and methods are disclosed herein. A single multi-mode fiber endoscope incorporated into a modal imaging system can facilitate the imaging of inner portions of a patient's body at a quantum-limited resolution. One method of sub-diffraction endoscopic modal imaging includes collecting incoming radiation with a multi-mode fiber, separating the output into multiple modes, and measuring an energy level of each mode to construct an image of the received incoming radiation.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: March 8, 2022
    Assignee: Honeywell International Inc.
    Inventors: Lisa Lust, Mary Salit
  • Patent number: 11256114
    Abstract: A semiconductor device is provided. The semiconductor device includes a silicon nitride waveguide in a first dielectric layer over a substrate. The semiconductor device includes a semiconductor waveguide in a second dielectric layer over the first dielectric layer. The first dielectric layer including the silicon nitride waveguide is between the second dielectric layer including the semiconductor waveguide and the substrate.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: February 22, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LIMITED
    Inventors: Yi-Chen Chen, Ming Chyi Liu, Shih-Wei Lin
  • Patent number: 11201454
    Abstract: The invention relates to a semiconductor laser comprising a layer structure comprising an active zone, wherein the active zone is configured to generate an electromagnetic radiation, wherein the layer structure comprises a sequence of layers, wherein two opposite end faces are provided in a Z-direction, wherein at least one end face is configured to at least partly couple out the electromagnetic radiation, and wherein the second end face is configured to at least partly reflect the electromagnetic radiation, wherein guide means are provided for forming an optical mode in a mode space between the end faces, wherein means are provided which hinder a formation of an optical mode outside the mode space, in particular modes comprising a propagation direction which do not extend perpendicularly to the end faces.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: December 14, 2021
    Assignee: OSRAM OLED GMBH
    Inventors: Clemens Vierheilig, Alfred Lell, Sven Gerhard, Andreas Loeffler
  • Patent number: 11105733
    Abstract: A sensor for isolating, identifying, and quantifying one or more analytes in a sample is provided, the sensor having a metal substrate base and a polymer waveguide disposed on the metal substrate base, the polymer waveguide including an optical channel and a polymer disposed in the optical channel; wherein the polymer waveguide optically couples a first and a second fiber optic cable. Also provided herein are methods of using the sensor for isolating, identifying, and quantifying one or more analytes in a sample, the method including contacting the polymer waveguide with a sample, sequentially heating the sensor to a plurality of temperature thresholds, obtaining an optical output at each temperature threshold, and analyzing differences in sequentially-obtained optical outputs in order to identify and determine concentrations of individual analytes of interest in the sample.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: August 31, 2021
    Assignee: UNIVERSITY OF CINCINNATI
    Inventors: Fred R. Beyette, Jr., Geethanga Gayan De Silva
  • Patent number: 11042032
    Abstract: Architectures are provided for selectively outputting light for forming images, the light having different wavelengths and being outputted with low levels of crosstalk. In some embodiments, light is incoupled into a waveguide and deflected to propagate in different directions, depending on wavelength. The incoupled light then outcoupled by outcoupling optical elements that outcouple light based on the direction of propagation of the light. In some other embodiments, color filters are between a waveguide and outcoupling elements. The color filters limit the wavelengths of light that interact with and are outcoupled by the outcoupling elements. In yet other embodiments, a different waveguide is provided for each range of wavelengths to be outputted. Incoupling optical elements selectively incouple light of the appropriate range of wavelengths into a corresponding waveguide, from which the light is outcoupled.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: June 22, 2021
    Assignee: Magic Leap, Inc.
    Inventors: Robert Dale TeKolste, Michael Anthony Klug, Brian T. Schowengerdt
  • Patent number: 11016300
    Abstract: Architectures are provided for selectively outputting light for forming images, the light having different wavelengths and being outputted with low levels of crosstalk. In some embodiments, light is incoupled into a waveguide and deflected to propagate in different directions, depending on wavelength. The incoupled light then outcoupled by outcoupling optical elements that outcouple light based on the direction of propagation of the light. In some other embodiments, color filters are between a waveguide and outcoupling elements. The color filters limit the wavelengths of light that interact with and are outcoupled by the outcoupling elements. In yet other embodiments, a different waveguide is provided for each range of wavelengths to be outputted. Incoupling optical elements selectively incouple light of the appropriate range of wavelengths into a corresponding waveguide, from which the light is outcoupled.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: May 25, 2021
    Assignee: Magic Leap, Inc.
    Inventors: Robert Dale Tekolste, Michael Anthony Klug, Brian T. Schowengerdt
  • Patent number: 10989872
    Abstract: Structures for a waveguide bend and methods of fabricating a structure for a waveguide bend. A waveguide bend is connected to a waveguide core. A slab layer, which is thinner than the waveguide bend, is coupled to the waveguide core and the waveguide bend. The slab layer includes a first curved opening and a second curved opening that is positioned between the first curved opening and a side surface of the waveguide bend. A section of the slab layer is positioned between the first and second curved openings. The first curved opening has a first radius, and the second curved opening has a second radius that is greater than or less than the first radius of the first curved opening.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: April 27, 2021
    Assignee: GLOBALFOUNDRIES U.S. INC.
    Inventors: Yusheng Bian, Ajey Poovannummoottil Jacob
  • Patent number: 10983277
    Abstract: An optical subassembly includes a planar dielectric waveguide structure that is deposited at temperatures below 400 C. The waveguide provides low film stress and low optical signal loss. Optical and electrical devices mounted onto the subassembly are aligned to planar optical waveguides using alignment marks and stops. Optical signals are delivered to the submount assembly via optical fibers. The dielectric stack structure used to fabricate the waveguide provides cavity walls that produce a cavity, within which optical, optoelectronic, and electronic devices can be mounted. The dielectric stack is deposited on an interconnect layer on a substrate, and the intermetal dielectric can contain thermally conductive dielectric layers to provide pathways for heat dissipation from heat generating optoelectronic devices such as lasers.
    Type: Grant
    Filed: January 18, 2020
    Date of Patent: April 20, 2021
    Assignee: POET Technologies, Inc.
    Inventors: William Ring, Miroslaw Florjanczyk
  • Patent number: 10983273
    Abstract: The optical phased array may use a grating based emitter in order to emit light out of the plane of a PIC chip from an array of output waveguides. A longer grating allows for a larger aperture in the output waveguide dimension and allows for a small spot size. However, even for the relatively thick grating layers available in production foundries, the gratings still cause light to decay within less than 0.5 mm. To reduce the grating strength, some or all of the diffraction gratings may only be provided between the output waveguides, e.g. over trenches between the output waveguides, but not over top the output waveguides, whereby the periodicity only interacts with the weaker evanescent tails of the confined mode instead of the entire cross section of the output waveguides. By forming sufficiently narrow slots in the grating layer only down to the upper cladding layer, the diffraction gratings may be made extremely weak.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: April 20, 2021
    Assignee: Voyant Photonics, Inc.
    Inventor: Christopher T. Phare
  • Patent number: 10935726
    Abstract: An optical device is disclosed, including a phase delay, a first adiabatic coupler adapted to receive an input signal and adapted to be optically coupled to an input of the phase delay, and a second adiabatic coupler adapted to be optically coupled to an output of the phase delay. The second adiabatic coupler includes a first waveguide including a first portion optically coupled to the first output and including a first width, and a second waveguide including a second portion optically coupled to the second output and comprising a second width that is approximately equal to the first width.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: March 2, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Yi Ho Lee, Tao Ling, Ravi S. Tummidi, Mark A. Webster
  • Patent number: 10914895
    Abstract: A package structure including a plurality of first dies and an insulating encapsulant is provided. The plurality of first dies each include a first waveguide layer having a first waveguide path of a bent pattern, wherein the first waveguide layers of the plurality of first dies are optically coupled to each other to form an optical route. The insulating encapsulant encapsulates the plurality of first dies.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: February 9, 2021
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Yu-Kuang Liao, Cheng-Chun Tsai, Chen-Hua Yu, Fang-Cheng Chen, Wen-Chih Chiou, Ping-Jung Wu
  • Patent number: 10901219
    Abstract: Architectures are provided for selectively outputting light for forming images, the light having different wavelengths and being outputted with low levels of crosstalk. In some embodiments, light is incoupled into a waveguide and deflected to propagate in different directions, depending on wavelength. The incoupled light then outcoupled by outcoupling optical elements that outcouple light based on the direction of propagation of the light. In some other embodiments, color filters are between a waveguide and outcoupling elements. The color filters limit the wavelengths of light that interact with and are outcoupled by the outcoupling elements. In yet other embodiments, a different waveguide is provided for each range of wavelengths to be outputted. Incoupling optical elements selectively incouple light of the appropriate range of wavelengths into a corresponding waveguide, from which the light is outcoupled.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: January 26, 2021
    Assignee: Magic Leap, Inc.
    Inventors: Robert Dale TeKolste, Michael Anthony Klug, Brian T. Schowengerdt
  • Patent number: 10890822
    Abstract: A Mach-Zehnder optical modulator includes: a Mach-Zehnder interferometer that includes first and second arms formed on a silicon substrate, and a controller that controls bias current of the first and second arms. The controller controls the bias current of the first and second arms respectively to be a first offset value. The controller repeatedly executes a current adjustment process to increase the bias current of the first arm until a gradient of a phase shift amount of the first arm with respect to the bias current of the first arm reaches a target value. The controller controls the bias current of the second arm to be a second offset value that is smaller than the first offset value. The controller repeatedly performs the current adjustment process to increase the bias current of the first arm until a phase difference of the Mach-Zehnder interferometer reaches a target phase difference.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: January 12, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Shigeki Kawaai, Hirotomo Izumi, Manabu Yamazaki
  • Patent number: 10866421
    Abstract: Architectures are provided for selectively outputting light for forming images, the light having different wavelengths and being outputted with low levels of crosstalk. In some embodiments, light is incoupled into a waveguide and deflected to propagate in different directions, depending on wavelength. The incoupled light then outcoupled by outcoupling optical elements that outcouple light based on the direction of propagation of the light. In some other embodiments, color filters are between a waveguide and outcoupling elements. The color filters limit the wavelengths of light that interact with and are outcoupled by the outcoupling elements. In yet other embodiments, a different waveguide is provided for each range of wavelengths to be outputted. Incoupling optical elements selectively incouple light of the appropriate range of wavelengths into a corresponding waveguide, from which the light is outcoupled.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: December 15, 2020
    Assignee: Magic Leap, Inc.
    Inventors: Robert Dale Tekolste, Michael Anthony Klug, Brian T. Schowengerdt
  • Patent number: 10866440
    Abstract: An optical modulator includes a dielectric layer and a waveguide. The waveguide is disposed on the dielectric layer. The waveguide has a first region, a second region, and an optical coupling region between the first region and the second region. The waveguide located in the first region includes a first electrical coupling portion and a first slab portion connected to each other. The waveguide located in the second region includes a second electrical coupling portion and a second slab portion connected to each other. The waveguide located in the optical coupling region includes a first optical coupling portion and a second optical coupling portion. The first slab portion has at least two sub-portions having different heights. The second slab portion has at least two sub-portions having different heights.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: December 15, 2020
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Lan-Chou Cho, Chewn-Pu Jou, Feng-Wei Kuo, Huan-Neng Chen, Min-Hsiang Hsu
  • Patent number: 10862611
    Abstract: A wavelength selective switching device comprises a plurality of input paths for receiving optical signals, a plurality of output paths for emitting the optical signals, and a switching unit for selectively directing the optical signals from the input paths to the output paths. The switching unit comprises a reflective area adapted to be concurrently illuminated by a first optical signal from a first input path among the plurality of input paths, and by a second optical signal from a second input path among the plurality of input paths, the second input path being different from the first input path, and to concurrently direct the first optical signal to a first output path among the plurality of output paths and the second optical signal to a second output path among the plurality of output paths, the second output path being different from the first output path. Said first output path and said second output path are spatially separated by said first input path and said second input path, or vice-versa.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: December 8, 2020
    Assignee: XIEON NETWORKS S.a.r.l.
    Inventor: Robert Schimpe
  • Patent number: 10791318
    Abstract: Among other aspects, various embodiments include encoding wavelength-based characteristics, in addition to three-dimensional positions, of a plurality of objects of a plurality of different wavelengths directly in an image of the objects.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: September 29, 2020
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yoav Shechtman, William E. Moerner, Lucien Weiss
  • Patent number: 10761265
    Abstract: A mode-matched waveguide Y-junction with balanced or unbalanced splitting comprises an input waveguide, expanding from an input end to an output end, for expanding the input beam of light along a longitudinal axis; first and second output waveguides extending from the output end of the input waveguide separated by a gap. Ideally, each of the first and second output waveguides includes an initial section capable of supporting a fundamental super mode, and having an inner wall substantially parallel to the longitudinal axis, and a mode splitting section extending from the initial section at an acute angle to the longitudinal axis.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: September 1, 2020
    Assignee: Elenion Technologies, LLC
    Inventor: Alexandre Horth
  • Patent number: 10739519
    Abstract: An optical fiber connector includes a coupler (304) having a waveguide section (308) integrally formed with a fiber attachment section (306). At least one waveguide (312) is disposed in the waveguide section and has a core dimension (312a) that is greater at the end of the waveguide at the fiber attachment section. The fiber attachment section (306) has a first surface and at least one recess (310) formed on the first surface for aligning one or more optical fibers (602) with the at least one waveguide (312,612). In an optical fiber component, an optical substrate has a first end and a second end, and at least one waveguide input at the first end and at least one waveguide output at the second end. An integral input portion of the substrate at the first end has one or more input optical fiber alignment elements and an integral output portion of the substrate at the second end has one or more output optical fiber alignment elements.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: August 11, 2020
    Assignee: CommScope Connectivity Belgium BVBA
    Inventors: Jan Watté, Koen Huybrechts
  • Patent number: 10725261
    Abstract: An optical fiber-cable branch member includes: a branch member main body; a cable fixing portion that holds and fixes an end portion of a jacket of an optical fiber-cable onto the branch member main body; and a tube fixing portion that fixes a plurality of protective tubes onto the branch member main body. The optical fiber-cable includes a first optical fiber core bundle and the jacket, and the jacket coats an outer circumference of the first optical fiber core bundle and includes a tension-resisting member buried in a cable longitudinal direction. The plurality of protective tubes cover and protect respective outer circumferences of a plurality of second optical fiber core bundles obtained by branching the first optical fiber core bundle extending from the end portion of the jacket.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: July 28, 2020
    Assignee: Fujikura Ltd.
    Inventors: Terutake Kobayashi, Norihiro Momotsu
  • Patent number: 10698160
    Abstract: A device for coupling a first waveguide with a second waveguide, wherein the core of the second guide includes an end portion having at least a flat end wall rotated facing, and preferably, in contact with the core of the first guide, a flared part of convex shape extending the end wall by extending from the first guide, the flared part having a section which increases by extending from the first guide, a narrowing, a main portion, extending the end portion by extending from the first guide and having a substantially constant section.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: June 30, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Salim Boutami, Karim Hassan, Bayram Karakus
  • Patent number: 10638112
    Abstract: Various embodiments include an apparatus including a phase mask and circuitry. The phase mask is configured and arranged with optics in an optical path to modify a shape of light, passed from an object. The shape modification characterizes the light as having two lobes with a lateral distance that changes along a line, having a first orientation, as a function of an axial proximity of the object to a focal plane, and with the line having a different orientation depending on whether the object is above or below the focal plane. The circuitry is configured and arranged to generate a three-dimensional image from light detected at the image plane, by using the modified shape to provide depth-based characteristics of the object.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: April 28, 2020
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yoav Shechtman, William E. Moerner, Lucien Weiss, Steffen J. Sahl
  • Patent number: 10598938
    Abstract: An optical coupler for a waveguide-based display includes a slanted surface-relief grating that includes a plurality of regions. Different regions of the plurality of regions of the slanted surface-relief grating have different angular selectivity characteristics for incident display light. Display light for different viewing angles is diffracted by different regions of the slanted surface-relief grating.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: March 24, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Ningfeng Huang, Hee Yoon Lee
  • Patent number: 10571629
    Abstract: An integrated photonic device comprising at least a first integrated photonic component supported by a substrate extending substantially in a plane of the device and optically isolating cladding facing the first integrated photonic component, the photonic device further comprising a waveguide formed by a deposited layer of group IV semiconductor material to extend on a slope in a direction out of the plane of the substrate, the waveguide arranged to, in use, couple light from/to the integrated photonic component through the optically isolating cladding.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: February 25, 2020
    Assignee: UNIVERSITY OF SOUTHAMPTON
    Inventors: Harold Chong, Rafidah Petra, Graham Reed, Swe Zin Oo, Antulio Tarazona
  • Patent number: 10551568
    Abstract: An eyepiece for projecting an image to an eye of a viewer includes a first planar waveguide positioned in a first lateral plane, a second planar waveguide positioned in a second lateral plane adjacent the first lateral plane, and a third planar waveguide positioned in a third lateral plane adjacent the second lateral plane. The first waveguide includes a first diffractive optical element (DOE) coupled thereto and disposed at a lateral position. The second waveguide includes a second DOE coupled thereto and disposed at the lateral position. The third waveguide includes a third DOE coupled thereto and disposed at the lateral position. The eyepiece further includes a first optical filter disposed between the first waveguide and the second waveguide at the lateral position, and a second optical filter positioned between the second waveguide and the third waveguide at the lateral position.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: February 4, 2020
    Assignee: Magic Leap, Inc.
    Inventors: Ivan Li Chuen Yeoh, Lionel Ernest Edwin, Hui-Chuan Cheng
  • Patent number: 10422957
    Abstract: Methods and systems for a low-loss optical Y-Junction power splitter are disclosed and may include a semiconductor die having an optical Y-junction. The optical Y-junction may comprise an input waveguide, two or more output waveguides, a taper region and a step feature. The input waveguide and the taper region may include a smooth transition between the input waveguide and the taper region, and the step feature may be between the taper region and the output waveguides. The semiconductor die may receive an optical signal in the input waveguide, and communicate substantially equal power optical signals to the output waveguides. The semiconductor die may comprise a photonically-enabled silicon CMOS integrated circuit. An optical signal may be received in each of the output waveguides and a summed output signal may be communicated to the input waveguide. The step feature may extend in a direction perpendicular to an axis of the output waveguides.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: September 24, 2019
    Assignee: Luxtera, Inc.
    Inventors: Attila Mekis, Lieven Verslegers