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公开(公告)号：US11982887B2
公开(公告)日：2024-05-14
申请号：US17070891
申请日：2020-10-14
Applicant: Ayar Labs, Inc.
Inventor： Sidney Buchbinder , John Fini , Anatol Khilo
CPC classification number: G02F1/0147 , G02B6/136 , G02F1/011 , H01S5/026 , H01S5/0612 , G02F2201/06 , G02F2203/50
Abstract: A thermo-optic phase shifter includes a substrate having a cavity formed into an upper region of the substrate. The thermo-optic phase shifter includes an optical waveguide disposed above the substrate. The optical waveguide extends across and above the cavity. The thermo-optic phase shifter also includes a heater device disposed along a lateral side of the optical waveguide. The heater device extends across and above the cavity. The cavity is formed by an undercut etching process after the optical waveguide and the heater device is formed. The optical waveguide can be formed to include one or more segments that pass over the cavity. Also, a second heater device can be included such that the one or more segments of the optical waveguide that extend over the cavity are bracketed by heater devices. Thermal transmission structures can be included to enhance heat transfer between the heater device(s) and the optical waveguide.
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公开(公告)号：US11843417B2
公开(公告)日：2023-12-12
申请号：US18197751
申请日：2023-05-16
Applicant: ZHEJIANG LAB
Inventor： Qiang Zhang , Hui Yu
CPC classification number: H04B10/60 , G02F1/2955 , G02F1/311 , G02F1/3131 , G02F2201/06 , G02F2201/205 , G02F2201/307 , G02F2202/10 , G02F2203/58 , G02F2203/70
Abstract: A programmable two-dimensional simultaneous multi-beam optically operated phased array receiver chip is manufactured based on silicon-on-insulator (SOI) and indium phosphide (InP) semiconductor manufacturing processes, including the SiN process. The InP-based semiconductor is used for preparing a laser array chip and a semiconductor optical amplifier array chip, the SiN is used for preparing an optical power divider, and the SOI semiconductor is used for preparing a silicon optical modulator, a germanium-silicon detector, an optical wavelength multiplexer, a true delay line, and other passive optical devices. The whole integration of the receiver chip is realized through heterogeneous integration of the InP-based chip and the SOI-based chip. Simultaneous multi-beam scanning can be realized through peripheral circuit programming control. The chip not only can realize two-dimensional multi-beam scanning, but also has strong expansibility, such that the chip can be used for ultra-wideband high-capacity wireless communication and simultaneous multi-target radar recognition systems.
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公开(公告)号：US20190235285A1
公开(公告)日：2019-08-01
申请号：US16380234
申请日：2019-04-10
Applicant: NeoPhotonics Corporation
Inventor： Kenneth McGreer , Calvin Ho
CPC classification number: G02F1/0147 , G02F1/225 , G02F1/2257 , G02F2001/212 , G02F2201/06 , G02F2202/09 , G02F2203/48 , G02F2203/50
Abstract: Mach-Zehnder interferometers comprise heater elements configured to have projections in the plane of optical waveguides positioned such that two adjacent sections of one optical waveguide arms are heated by a common heater element. The heater and at least a substantial section of the heated waveguide segments can be curved. Configurations of an optical waveguide arm can comprise an outer curved heated section, an inner curved heated section, and a loopback waveguide section connecting the outer curved heated section and the inner curved heated section, with average radius of curvature selected to form an open accessible space. Appropriate configurations of the two optical waveguide arms provide for nested configurations of the arms that provide for a compact structure for the interferometer.
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公开(公告)号：US20180252983A1
公开(公告)日：2018-09-06
申请号：US15906204
申请日：2018-02-27
Applicant: Marcel W. Pruessner , William S. Rabinovich , Rita Mahon , Peter G. Goetz
Inventor： Marcel W. Pruessner , William S. Rabinovich , Rita Mahon , Peter G. Goetz
CPC classification number: G02F1/292 , G01S7/4813 , G01S7/4817 , G02B6/124 , G02B6/2804 , G02B6/2813 , G02B6/2821 , G02F2201/06
Abstract: A device includes a waveguide grating out-coupler, and a tunable uniform phase shifter communicating with the waveguide grating out-coupler. The tunable uniform phase shifter steers a flat phase front along a first angle in a first plane. Optionally, the waveguide grating out-coupler includes a modulated refractive index and a physical grating period. The tunable uniform phase shifter controls the refractive index, thereby controlling an effective grating period. The grating period relates to the modulated refractive index, and the physical grating period. Optionally, the tunable uniform phase shifter includes a first thermo-optic phase shifter, a first electro-optic phase shifter, or a first micro-electro-mechanical system index perturbation phase shifter. Optionally, the tunable linear gradient phase shifter communicates with the waveguide grating out-coupler and steers a beam along the flat phase front along a second angle in a second plane, which is perpendicular to the first plane.
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公开(公告)号：US09971227B2
公开(公告)日：2018-05-15
申请号：US15620801
申请日：2017-06-12
Applicant: Zhengbiao Ouyang
Inventor： Zhengbiao Ouyang , Guohua Wen
IPC: G02F1/313
CPC classification number: G02F1/3133 , G02B6/122 , G02B6/1225 , G02B2006/12145 , G02F2201/06 , G02F2202/32 , G02F2203/07
Abstract: The present invention discloses a TMOS based on slab PhCs with a high DOP and a large EXR, which comprises an upper slab PhC and a lower slab PhC; the upper slab PhC is called as a first square-lattice slab PhC with a TE bandgap, the unit cell of the first square-lattice slab PhC includes a high-refractive-index rotating-square pillar, a single first flat dielectric pillar and a background dielectric, the first flat dielectric pillar includes a high-refractive-index dielectric pipe and a low-refractive-index dielectric, or a high-refractive-index flat film, or a low-refractive-index dielectric; the lower slab PhC is a second square-lattice slab PhC with a complete bandgap, wherein the unit cell of the second square-lattice slab PhC includes a high-refractive-index rotating-square pillar, a single second flat dielectric pillar and a background dielectric, and a normalized operating frequency of the TMOS with high DOP and large extinction ratio is 0.252 to 0.267.
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Patent Agency Ranking
公开(公告)号：US20180081205A1
公开(公告)日：2018-03-22
申请号：US15379165
申请日：2016-12-14
Applicant: Honeywell International Inc.
Inventor： Matthew Wade Puckett
CPC classification number: G02F1/125 , G01C19/722 , G01C19/727 , G01K2011/322 , G01N29/00 , G02B6/122 , G02F2201/06
Abstract: An acousto-optic waveguide comprises a cladding region comprising a first material having a first refractive index and a first acoustic velocity, and a pair of optical waveguide layers embedded in and extending through the cladding region. The optical waveguide layers are separated from one another by a gap region comprising the first material. The optical waveguide layers each comprise a second material having a second refractive index that is higher than the first refractive index and a second acoustic velocity that is higher than the first acoustic velocity. The optical waveguide layers substantially confine acoustic waves that are generated during optical signal propagation through the acousto-optic waveguide. The acoustic waves are substantially confined to the area around the optical waveguide layers and the gap region along the direction of the optical signal propagation.
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公开(公告)号：US20180039153A1
公开(公告)日：2018-02-08
申请号：US15667469
申请日：2017-08-02
Applicant: University of Southern California
Inventor： Hossein Hashemi , SungWon Chung , Hooman Abediasl
CPC classification number: G02F1/2955 , G02F1/292 , G02F2201/06 , G02F2203/50
Abstract: An optical device includes an array of unit optical elements. Each of the unit optical elements includes a plurality of amplitude adjustment (AA) elements, each of the plurality of AA elements configured for processing one of different phases of an optical signal; an optical antenna, and a combining mechanism for optically coupling the plurality of AA elements to the optical antenna. The optical device also includes a controller coupled to the plurality of AA elements, the controller configured for generating control signals for the plurality of AA elements according to a target optical beam pattern.
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28.发明申请公开(公告)号：US20170370723A1
公开(公告)日：2017-12-28
申请号：US15633795
申请日：2017-06-27
Applicant: The Charles Stark Draper Laboratory, Inc.
Inventor： Gilbert D. Feke
CPC classification number: G01C19/722 , G02F1/035 , G02F1/225 , G02F2001/211 , G02F2201/06 , G02F2202/20
Abstract: A Y-branch dual electro-optical phase modulator (YBDPM) has a stitched-in zinc oxide diffused waveguide. It is more vacuum stable and has higher resistance to photorefractive damage than currently used Ti-diffused waveguides. The YBDPM is useful in Fiber Optic Gyroscopes (FOG), especially in low frequencies applications.
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公开(公告)号：US20170351157A1
公开(公告)日：2017-12-07
申请号：US15626218
申请日：2017-06-19
Applicant: Zhengbiao Ouyang
Inventor： Zhengbiao Ouyang , Quanqiang Yu
CPC classification number: G02F3/00 , G02B6/1223 , G02B6/1225 , G02B6/125 , G02F1/3501 , G02F1/3511 , G02F1/365 , G02F2201/06 , G02F2202/32
Abstract: The present invention discloses an high-contrast photonic crystal “OR”, “NOT” and “XOR” logic gate, comprising a six-port two-dimensional photonic crystal, a nonlinear cavity unit and a cross-waveguide logic gate unit; the high-contrast photonic crystal “OR” logic gate includes a first reference-light input port, two first idle ports, two first signal-input ports and a first signal-output port; the high-contrast photonic crystal “NOT” logic gate includes two second reference-light input ports, two second idle ports, a second signal-input port and a second signal-output port; and the high-contrast photonic crystal “XOR” logic gate includes a three reference-light input port, two three-idle ports, two three-signal input ports and a three-signal output port; the cross-waveguide logic gate unit is arranged with different input or output ports; and the nonlinear cavity unit is coupled with the cross-waveguide logic gate unit. The structure of the present invention is easy to integrate with other optical logic elements.
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公开(公告)号：US09829766B2
公开(公告)日：2017-11-28
申请号：US15428432
申请日：2017-02-09
Applicant: Analog Devices, Inc.
Inventor： Michael H. Anderson , Scott R. Davis , Scott D. Rommel
CPC classification number: G02F1/295 , G02F1/1326 , G02F1/29 , G02F1/2955 , G02F2001/291 , G02F2201/06 , G02F2201/12 , G02F2201/122
Abstract: A substantially planar waveguide for dynamically controlling the out-of-plane angle at which a light beam exits the waveguide. Generally, liquid crystal materials may be disposed within a waveguide in a cladding proximate or adjacent to a core layer of the waveguide. In one example, the waveguide may contain one or more taper regions such that the light beam exits the waveguide and propagates out-of-the-plane of the waveguide into an out-coupling medium at a propagation angle. In one example, the waveguide may contain one or more electrodes onto which one or more voltages may be applied. The magnitude of the propagation angle may be electronically controlled by stored by controlling or altering the magnitude of the one or more applied voltages.
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