Patents Examined by Michael P. Mooney
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Patent number: 11921363Abstract: An interferometer comprises a plurality of waveguide branches comprising a plurality of bus waveguides and a plurality of photonic resonators. A first waveguide branch of the plurality of waveguide branches comprises a first photonic resonator coupled to a first bus waveguide. The first photonic resonator is disposed to couple and circle a first portion of an optical beam at the first photonic resonator to generate a first phase shift of the first portion of the optical beam, where the first phase shift is the same as a second phase shift of a second photonic resonator coupled to a second bus waveguide. The interferometer forms at least a portion of an in-phase and quadrature (IQ) modulator.Type: GrantFiled: January 9, 2023Date of Patent: March 5, 2024Assignee: Aeva, Inc.Inventors: Brian J. Roxworthy, Pradeep Srinivasan
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Patent number: 11914168Abstract: A method for assembling a two-dimensional fiber array launcher assembly. The method includes providing an alignment structure having a two-dimensional alignment plate with holes at one end and a two-dimensional beam shaper with micro-lenses at an opposite end. An endcap having a fiber attached thereto is systematically positioned in each hole, and is aligned with one of the micro-lenses with a high precision tolerance. The aligned endcap is then secured in the hole using a curable glue. This process is continued until all of the holes have aligned endcaps. If one of the endcaps is mis-aligned or becomes damaged, the glue can be heated and the endcap realigned or replaced.Type: GrantFiled: January 12, 2022Date of Patent: February 27, 2024Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: Dustin Guenther, Gregory D. Goodno, James Ho
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Patent number: 11906824Abstract: Embodiments provide for an optical modulator, comprising: a lower guide, comprising: a lower hub, made of monocrystalline silicon; and a lower ridge, made of monocrystalline silicon that extends in a first direction from the lower hub; an upper guide, including: an upper hub; and an upper ridge, made of monocrystalline silicon that extends in a second direction, opposite of the first direction, from the upper hub and is aligned with the lower ridge; and a gate oxide layer separating the lower ridge from the upper ridge and defining a waveguide region with the lower guide and the upper guide.Type: GrantFiled: March 2, 2023Date of Patent: February 20, 2024Assignee: Cisco Technology, Inc.Inventors: Xunyuan Zhang, Vipulkumar K. Patel, Prakash B. Gothoskar, Ming Gai Stanley Lo
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Patent number: 11899253Abstract: Example polarization splitter and rotator devices are described. In one example, an optical apparatus includes a splitter configured to split a light signal into a first signal having a first polarization and a second signal having a second polarization, a polarization rotator configured to rotate the second polarization of the second signal into a third polarization, and a polarization mode converter configured to convert the third polarization of the second signal into the first polarization. In certain aspects of the embodiments, the splitter can be a curved multi-mode inference (MMI) polarization splitter, and the polarization rotator comprises input and output ports, with the output port being wider than the input port. The polarization mode converter can be an asymmetrical waveguide taper mode converter. The devices described herein can overcome the deficiencies of conventional devices and provide low insertion loss, flat and/or wide wavelength response, high fabrication tolerance, and compact size.Type: GrantFiled: May 26, 2021Date of Patent: February 13, 2024Assignee: MACOM Technology Solutions Holdings, Inc.Inventors: Yunchu Li, Austin G. Griffith, Rich R. Grzybowski
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Patent number: 11899256Abstract: A pluggable optical connector is configured to be insertable into and removable from an optical communication apparatus, and to be capable of communicating a modulation signal and a data signal with the optical communication apparatus. A wavelength-tunable light source is configured to output an output light and a local oscillation light. An optical transmission unit is configured to output an optical signal generated by modulating the output light in response to the modulation signal. An optical reception unit is configured to demodulate an optical signal received by using the local oscillation light to the data signal. Pluggable optical receptors are configured in such a manner that an optical fiber is insertable into and removable from the pluggable optical receptors, and configured to be capable of outputting the optical signal to the optical fiber and transferring the optical signal received thorough the optical fiber to the optical reception unit.Type: GrantFiled: January 5, 2023Date of Patent: February 13, 2024Assignee: NEC CORPORATIONInventor: Isao Tomita
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Patent number: 11892678Abstract: A photonic device includes a silicon layer, wherein the silicon layer extends from a waveguide region of the photonic device to a device region of the photonic device, and the silicon layer includes a waveguide portion in the waveguide region. The photonic device further includes a cladding layer over the waveguide portion, wherein the device region is free of the cladding layer. The photonic device further includes a low refractive index layer in direct contact with the cladding layer, wherein the low refractive index layer comprises silicon oxide, silicon carbide, silicon oxynitride, silicon carbon oxynitride, aluminum oxide or hafnium oxide. The photonic device further includes an interconnect structure over the low refractive index layer.Type: GrantFiled: August 26, 2021Date of Patent: February 6, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Chien-Ying Wu, Yuehying Lee, Sui-Ying Hsu, Chen-Hao Huang, Chien-Chang Lee, Chia-Ping Lai
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Patent number: 11892681Abstract: A coupling system includes an optical fiber configured to carry an optical signal. The coupling system further includes a chip in optical communication with the optical fiber. The chip includes a substrate. The chip further includes a grating on a first side of the substrate, wherein the grating is configured to receive the optical signal. The chip further includes an interconnect structure over the grating on the first side of the substrate, wherein the interconnect structure defines a cavity aligned with the grating. The chip further includes a first polysilicon layer on a second side of the substrate, wherein the second side of the substrate is opposite to the first side of the substrate.Type: GrantFiled: August 27, 2021Date of Patent: February 6, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Chen-Hao Huang, Hau-Yan Lu, Sui-Ying Hsu, Yuehying Lee, Chien-Ying Wu, Chien-Chang Lee, Chia-Ping Lai
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Patent number: 11886022Abstract: There is provided a beam expander including a first optical element, a second optical element, a composite waveguide including a plurality of waveguide elements, and a dichroic coating provided between the plurality of waveguide elements. The first optical element inputs a collimated incident beam from the outside into the composite waveguide, and the second optical element outputs, from the composite waveguide, collimated incident beam, input to the composite waveguide, wherein the collimated incident beam input into the composite waveguide is divided into multiple wavefronts by the dichroic coating, and the multiple wavefronts are mixed by total internal reflection in the composite waveguide. When the beam expander is used, coherency and collimation of an output beam may be maintained and speckles may be reduced or eliminated while improving the efficiency of an optical system.Type: GrantFiled: November 5, 2021Date of Patent: January 30, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Aleksander V. Morozov, Sergey E. Dubynin, German B. Dubinin, Chilsung Choi, Hongseok Lee, Hoon Song
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Patent number: 11880070Abstract: Plural grating couplers having grating conditions different from each other and plural optical waveguides respectively connected with the plural grating couplers are included. The plural grating couplers have the same arraying directions of gratings. Further, each of the plural grating couplers has a different grating interval as a grating condition. Further, plural reflection units respectively provided to the plural optical waveguides are included.Type: GrantFiled: May 17, 2019Date of Patent: January 23, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toru Miura, Yoshiho Maeda, Hiroshi Fukuda
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Patent number: 11874503Abstract: The present application provides a diffractive optical waveguide for optical pupil expansion and a display device, comprising a waveguide substrate having a coupling-in region in which a coupling-in grating is located and a coupling-out region. A first and a second diffractive light obtained by the input light diffracted by the coupling-in grating are respectively totally reflected in the waveguide substrate and directed to a first and a second coupling-out regions. A first coupling-out grating disposed in the first coupling-out region and a second coupling-out grating disposed in the second coupling-out region both are configured to couple at least a portion of light propagating therein out of the waveguide substrate by diffraction. The first and the second coupling-out regions are respectively located at both sides of the coupling-in region. A center of the coupling-in region deviates from the center line connecting the centers of the first and the second coupling-out regions.Type: GrantFiled: July 3, 2023Date of Patent: January 16, 2024Assignee: JIAXING UPHOTON OPTOELECTRONICS TECHNOLOGY CO., LTDInventors: Xingming Zhao, Zhentao Fan, Qingfeng Zhu, Kehan Tian
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Patent number: 11874502Abstract: A modular assembly for opto-electronic systems has a substrate on which various photonic integrated circuit (PIC) chips and electronic integrated circuit (EIC) chips are mounted. One or more waveguide (WG) chips mounted on the substrate align the optical communication between the PIC chips and fiber blocks for optical fibers. Preconfigured electrical connections in the substrate allow the PIC and EIC chips to communicate with one another and to communicate with solder bumps on the substrate for integration of the modular assembly with other electronic components.Type: GrantFiled: November 21, 2022Date of Patent: January 16, 2024Assignee: II-VI DELAWARE, INC.Inventors: Po Dong, Juthika Basak, Jiashu Chen
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Patent number: 11874508Abstract: A unitary optical ferrule is molded to include one or more elements for receiving and securing one or more optical waveguides one or more elements for affecting one or more characteristics of light from the optical waveguide while propagating the light within the ferrule. The optical ferrule also includes one or more first alignment features and one or more second alignment features that, when the ferrule is mated with a mating ferrule, each controls alignment of the ferrule with the mating ferrule along three mechanical degrees of freedom. The surface of the optical ferrule can be divided along the thickness axis into a first section and an opposing second section, wherein the first section of the surface includes the receiving and securing elements, the light affecting elements, and the first alignment features and the second section of the surface includes the second alignment features.Type: GrantFiled: January 6, 2023Date of Patent: January 16, 2024Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Michael A Haase, Alexander R. Mathews, Terry L. Smith, James M. Nelson
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Patent number: 11874488Abstract: A diffractive optical waveguide and a display apparatus are disclosed. A coupling-out grating includes a first grating having a first, second, and third grating vectors, directions of the second and third grating vectors, being respectively towards both sides of a direction of first grating vector, form acute angles with it, a cross-section profile of an optical unit structure of the first grating has a first, second, third, and fourth vertices, a straight line passing through the first and second vertices and a straight line passing through the third and fourth vertices are perpendicular to the direction, a straight line passing through the first and fourth vertices and a straight line passing through the second and third vertices respectively form angles ?1 and ?2 having a same sign with the direction, wherein 15°?|?1|?45° and 15°?|?2?45°.Type: GrantFiled: July 11, 2023Date of Patent: January 16, 2024Assignee: JIAXING UPHOTON OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Zhentao Fan, Xingming Zhao, Kehan Tian
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Patent number: 11860421Abstract: An optical system with different optical coupling device configurations and a method of fabricating the same are disclosed. An optical system includes a substrate, a waveguide disposed on the substrate, an optical fiber optically coupled to the waveguide, and an optical coupling device disposed between the optical fiber and the waveguide. The optical coupling device configured to optically couple the optical fiber to the waveguide. The optical coupling device includes a dielectric layer disposed on the substrate, a semiconductor tapered structure disposed in a first horizontal plane within the dielectric layer, and a multi-tip dielectric structure disposed in a second horizontal plane within the dielectric layer. The first and second horizontal planes are different from each other.Type: GrantFiled: November 13, 2020Date of Patent: January 2, 2024Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Weiwei Song, Chan-Hong Chern, Chewn-Pu Jou, Stefan Rusu, Min-Hsiang Hsu
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Patent number: 11846815Abstract: A planar lightwave circuit (PLC) assembly is used for a transceiver module that includes a circuit board having photodetectors mounted at a spacing from one another. A transmitter mounted on the circuit board is configured to transmit optical signals for a network. The PLC assembly includes at least one PLC chip and at least one fiber array. The PCL chip mounts on the transmitter and is configured to receive optical signals for the network. The fiber array has optical fibers connecting between the PLC chip and the photodetectors. The array's first end connected to the PLC chip has a first pitch between the optical fibers, while the array's second end has at least one connector connected adjacent the photodetectors and having a second fiber pitch, which is greater than the first pitch and is configured to the spacing of the photodetectors.Type: GrantFiled: February 11, 2021Date of Patent: December 19, 2023Assignee: II-VI DELAWARE, INC.Inventors: Grace Zhang, Sharon Zeng, Vincent Guan
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Patent number: 11846808Abstract: An optical transducer for endoscope includes an optical element, an optical fiber, and a fiber holding member including a first holding member including a first principal surface and a second principal surface and a second holding member in which a third principal surface is disposed to face the second principal surface, a first through-hole into which the optical fiber is inserted, being formed in the first holding member, the optical element being mounted on a fourth principal surface. A trench connected to the first through-hole and including openings respectively on opposed two side surfaces is formed on the second principal surface. Only a part of a distal end portion of the optical fiber is observable from the openings of the trench.Type: GrantFiled: July 28, 2021Date of Patent: December 19, 2023Assignee: OLYMPUS CORPORATIONInventor: Kosuke Kawahara
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Patent number: 11846807Abstract: Mid-infrared-transparent optical fiber products with enhanced resistance to OH diffusion are disclosed, which may be used fiber laser oscillator and amplifiers systems. In one embodiment, an optical fiber product may include optical fiber configured for propagation of mid-infrared radiation toward a light-radiating endface of or coupled to the optical fiber, and a diffusion barrier disposed on the light-radiating endface and configured for allowing the mid-infrared radiation emanating from the light-radiating endface to pass therethrough and for preventing OH diffusion therethrough toward the light-radiating endface.Type: GrantFiled: July 2, 2020Date of Patent: December 19, 2023Assignee: Université LavalInventors: Martin Bernier, Réal Vallée, Souleymane Toubou Bah, Vincent Fortin, Frédéric Maes, Yigit Ozan Aydin
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Patent number: 11835768Abstract: Provided is an optical waveguide circuit in which the space between waveguides, a waveguide groove, or the space between fibers is filled with a resin where a wavelength shifts to positive (shifts backward) instead of a conventional resin where a wavelength shifts to negative (shifts forward), to return a refractive index having decreased by an instantaneous change to the original refractive index. In the filling resin with which the space between the waveguides, the waveguide groove, the space between the fibers, or the space between the fiber and the waveguide is filled, upon input of light, a refractive index of a portion through which the light passes instantaneously decreases, and then the refractive index gradually increases to compensate the initial decrease in the refractive index.Type: GrantFiled: May 23, 2019Date of Patent: December 5, 2023Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Katsuhiko Hirabayashi, Nobutatsu Koshobu, Ryoichi Kasahara
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Patent number: 11835752Abstract: A measurement apparatus, including: a tapered optical fiber, the tapered optical fiber having an input to receive radiation and having an output to provide spectrally broadened output radiation toward a measurement target, the tapered optical fiber configured to spectrally broaden the radiation received at the input; and a detector system configured to receive a redirected portion of the output radiation from the measurement target.Type: GrantFiled: October 9, 2020Date of Patent: December 5, 2023Assignee: ASML HOLDING N.V.Inventors: King Pui Leung, Tao Chen, Ronan James Havelin, Igor Matheus Petronella AARTS, Adel Joobeur, Joseph Carbone
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Patent number: 11828984Abstract: Structures including an optical component and methods of fabricating a structure including an optical component. The structure includes a substrate, an optical component including a waveguide core, and a back-end-of-line stack including a heat spreader layer. The optical component is positioned in a vertical direction between the substrate and the back-end-of-line stack. The waveguide core contains a first material having a first thermal conductivity, and the heat spreader layer contains a second material having a second thermal conductivity that is greater than the first thermal conductivity of the first material.Type: GrantFiled: February 24, 2022Date of Patent: November 28, 2023Assignee: GlobalFoundries U.S. Inc.Inventors: Theodore Letavic, Yusheng Bian, Hemant Dixit