公开(公告)号：US12046165B2

公开(公告)日：2024-07-23

申请号：US18349362

申请日：2023-07-10

Applicant: LUMUS LTD.

Inventor： Shimon Grabarnik ,  Tsion Eisenfeld ,  Elad Sharlin

IPC: G02F1/01 ,  G09G3/00

CPC classification number: G09G3/001 ,  G02F1/011 ,  G02F2201/06 ,  G02F2203/01 ,  G02F2203/02 ,  G09G2320/0257 ,  G09G2354/00 ,  G09G2360/144

Abstract: In an embodiment, an apparatus is disclosed that includes at least one processor configured to determine a target portion of an eye motion box and to identify a facet of a light-guide optical element that is configured to direct a light beam comprising at least a portion of an image field of view toward the target portion of the eye motion box. The at least one processor is configured to identify a display region of an image generator that is configured to inject the light beam into the light-guide optical element at an angle that, in conjunction with the identified facet, is configured to direct the light beam toward the target portion of the eye motion box. The at least one processor is configured to selectively activate the identified facet and the identified display region to direct the light beam toward the target portion of the eye motion box.

公开(公告)号：US12025830B2

公开(公告)日：2024-07-02

申请号：US17837774

申请日：2022-06-10

Applicant: CONSEJO SUPERIOR DE INVESTIGACIONES CIENTÍFICAS (CSIC) ,  UNIVERSIDAD DE MÁLAGA

Inventor： David González Andrade ,  Aitor Villafranca Velasco ,  Pedro Corredera Guilén ,  J. Gonzalo Wangüemert Pérez ,  Alejandro Ortega Moñux ,  Robert Halir ,  Iñigo Molina Fernández

IPC: G02B6/12 ,  G02B6/124 ,  G02B6/125 ,  G02B6/14 ,  G02B6/28 ,  G02B6/34 ,  G02F1/01 ,  G02F1/21 ,  G02F1/225 ,  G02B6/122

CPC classification number: G02B6/12004 ,  G02B6/12007 ,  G02B6/124 ,  G02B6/125 ,  G02B6/14 ,  G02B6/2813 ,  G02B6/34 ,  G02F1/011 ,  G02F1/217 ,  G02F1/225 ,  G02B2006/12088 ,  G02B2006/1209 ,  G02B2006/12152 ,  G02B2006/12164 ,  G02B6/1228

Abstract: An integrated mode converter and multiplexer (/demultiplexer) combines a multimode interference coupler, at least one phase-shifter and a symmetrical Y-junction. The dispersion of the multimode interference coupler is engineered through subwavelength structures in order to achieve a very wide bandwidth. Several phase-shifter topologies for further bandwidth enhancement are disclosed, as well as architectures for multiplexing a greater number of optical modes.

公开(公告)号：US20240151994A1

公开(公告)日：2024-05-09

申请号：US18412021

申请日：2024-01-12

Applicant: Taiwan Semiconductor Manufacturing Company Limited

Inventor： Chih-Chang LIN ,  Chan-Hong CHERN

IPC: G02F1/01

CPC classification number: G02F1/011 ,  G02F1/0121

Abstract: A directional coupler is configured to receive a continuous light waveform and split the waveform into two carrier signals. Ring modulators are configured to receive the carrier signals and binary data and modulate the carrier signals based on the binary data. A combiner is configured to combine the modulated carrier signals into a four-level pulse amplitude modulation (PAM4) signal.

公开(公告)号：US11977281B2

公开(公告)日：2024-05-07

申请号：US17235416

申请日：2021-04-20

Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.

Inventor： Sean P. Rodrigues ,  Paul Donald Schmalenberg ,  Yuqing Zhou ,  Ercan Mehmet Dede

IPC: G02F1/00 ,  G02B6/293 ,  G02F1/01 ,  G02F1/225

CPC classification number: G02F1/0054 ,  G02B6/2935 ,  G02F1/011 ,  G02F1/225 ,  G02F2201/12

Abstract: A silicon on insulator (SOI) photonic device having a waveguide is provided that includes a mode overlap portion with a topology optimized structure situated below an electrode of the capacitance structure. The device can significantly change a refractive index in a volume of mode overlap depending upon the applied potential to the capacitor and allows for a π phase shift in a modest mode overlap volume. The topology optimized structure has a waveguide and substrate that are partitioned in three dimensions using an extruded projection design. The electrode is a transition metal di-chalcogenide monolayer sheet (2D TMD). The enhanced mode overlay from the topology optimized waveguide portion allows a large reduction in the length of the waveguide with the mode overlap to achieve the needed phase shift for a photonic device.

公开(公告)号：US11940677B1

公开(公告)日：2024-03-26

申请号：US17532635

申请日：2021-11-22

Applicant: HyperLight Corporation

Inventor： Mian Zhang ,  Christian Reimer ,  Prashanta Kharel

IPC: G02F1/01

CPC classification number: G02F1/011

Abstract: An optical device including a waveguide, electrodes, and a connecting dielectric is described. The waveguide includes an electro-optic material having a waveguide optical refractive index and a waveguide microwave dielectric constant. The electrodes include a first electrode and a second electrode. The waveguide is between the first electrode and the second electrode. At least a portion of the connecting dielectric is between the waveguide and electrodes. The connecting dielectric has a microwave dielectric constant greater than the waveguide microwave dielectric constant.

公开(公告)号：US11936082B2

公开(公告)日：2024-03-19

申请号：US17006761

申请日：2020-08-28

Applicant: The Regents of the University of California

Inventor： Abdelkrim El Amili ,  Yeshaiahu Fainman ,  Cheng-Yi Fang ,  Hung-Hsi Lin

IPC: H01P1/15 ,  G02F1/01 ,  G02F1/03 ,  G02F1/21 ,  H01P3/00 ,  H01P3/16 ,  H01P5/00

CPC classification number: H01P1/15 ,  G02F1/011 ,  G02F1/0338 ,  G02F1/21 ,  H01P3/00 ,  H01P3/003 ,  H01P3/16 ,  H01P5/00 ,  G02F1/212 ,  G02F2201/16 ,  G02F2203/055

Abstract: Microwave photonic devices use light to carry and process microwave signals over a photonic link. Light can be used as a stimulus to microwave devices that directly control microwave signals. Previous optically controlled devices suffer from large footprint, high optical power level required for switching, lack of scalability and complex integration requirements, restricting their implementation in practical microwave systems. Disclosed are monolithic optically reconfigurable integrated microwave switches (MORIMSs) built on a CMOS compatible silicon photonic chip. The disclosed scalable micrometer-scale switches provide higher switching efficiency and operate using optical power that is orders of magnitude lower than previous devices. The disclosed devices and techniques provide examples of silicon photonic platforms integrating microwave circuitry.

公开(公告)号：US11886056B2

公开(公告)日：2024-01-30

申请号：US17456468

申请日：2021-11-24

Applicant: Cisco Technology, Inc.

Inventor： Donald Adams ,  Prakash B. Gothoskar ,  Vipulkumar Patel ,  Mark Webster

IPC: G02F1/025 ,  G02F1/01 ,  G02B6/132 ,  G02B6/136 ,  G02F1/225 ,  G02F1/015

CPC classification number: G02F1/025 ,  G02B6/132 ,  G02B6/136 ,  G02F1/011 ,  G02F1/2257 ,  G02F1/0152

Abstract: An optical modulator may include a lower waveguide, an upper waveguide, and a dielectric layer disposed therebetween. When a voltage potential is created between the lower and upper waveguides, these layers form a silicon-insulator-silicon capacitor (also referred to as SISCAP) guide that provides efficient, high-speed optical modulation of an optical signal passing through the modulator. In one embodiment, at least one of the waveguides includes a respective ridge portion aligned at a charge modulation region which may aid in confining the optical mode laterally (e.g., in the width direction) in the optical modulator. In another embodiment, ridge portions may be formed on both the lower and the upper waveguides. These ridge portions may be aligned in a vertical direction (e.g., a thickness direction) so that ridges overlap which may further improve optical efficiency by centering an optical mode in the charge modulation region.

公开(公告)号：US11860422B2

公开(公告)日：2024-01-02

申请号：US18093630

申请日：2023-01-05

Applicant: Analog Photonics LLC

Inventor： Ehsan Shah Hosseini ,  Michael Robert Watts

IPC: H04B10/11 ,  G02B6/35 ,  G02F1/01 ,  H04Q11/00 ,  H04B10/27 ,  G02B6/34

CPC classification number: G02B6/3556 ,  G02B6/3512 ,  G02B6/3526 ,  G02B6/3534 ,  G02B6/3558 ,  G02F1/011 ,  G02F1/0147 ,  H04B10/11 ,  H04B10/27 ,  H04Q11/0005 ,  G02B6/34 ,  G02B6/3548 ,  G02B6/3596 ,  H04Q2011/0035 ,  H04Q2011/0041

Abstract: Aspects of the present disclosure describe large scale steerable optical switched arrays that may be fabricated on a common substrate including many thousands or more emitters that may be arranged in a curved pattern at the focal plane of a lens thereby allowing the directional control of emitted light and selective reception of reflected light suitable for use in imaging, ranging, and sensing applications including accident avoidance.

公开(公告)号：US20230367143A1

公开(公告)日：2023-11-16

申请号：US18029242

申请日：2022-01-14

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： Kei KATO ,  Hideki ICHIMEI

IPC: G02F1/01

CPC classification number: G02F1/011 ,  G02F2201/50

Abstract: An optical modulator that suppresses poor welding between a case main body and a lid portion is provided. There is provided an optical modulator including: a case that is a rectangular parallelepiped and accommodates at least an optical waveguide element, in which the case includes a case main body 1 in which one surface of the rectangular parallelepiped forms an opening portion, and a lid portion 2 that has a rectangular shape and that closes the opening portion, the lid portion includes a peripheral part that has a thin thickness, and a protruding part 20 that is formed on the lid portion excluding the peripheral part and that protrudes toward an inside of the case, and when the lid portion is fitted into the case main body, a distance between an inner peripheral side of an end surface forming the opening portion of the case main body and an outer edge of the protruding part is set such that a distance d1 formed on a short-side side of the lid portion is larger than a distance d2 formed on a long-side side of the lid portion.

公开(公告)号：US20230351235A1

公开(公告)日：2023-11-02

申请号：US18140813

申请日：2023-04-28

Applicant: The MITRE Corporation ,  National Technology & Engineering Solution of Sandia, LLC ,  MIT - Massachusetts Institute of Technology

Inventor： Genevieve CLARK ,  Matthew KOPPA ,  Kevin CHEN ,  Andrew LEENHEER ,  Linsen LI ,  Daniel DOMINQUEZ ,  Mark DONG ,  Matthew SAHA ,  Andrew GOLTER ,  Gerald GILBERT ,  Matthew EICHENFIELD ,  Dirk ENGLUND

IPC: G06N10/20 ,  G02F1/01 ,  G06E3/00

CPC classification number: G06N10/20 ,  G02F1/0128 ,  G02F1/011 ,  G02F1/0102 ,  G06E3/005 ,  G02F2202/32

Abstract: A method for controlling a qubit encoded in an atom-like defect in a solid-state host may comprise applying an electrical signal to a piezoelectric cantilever that is mechanically coupled to a photonic waveguide comprising one or more embedded point defect sites. The photonic waveguide may be optically coupled to a photonic chip. Applying the electrical signal to the piezoelectric cantilever may induce movement in the piezoelectric cantilever, which may induce a strain in the photonic waveguide. The applied electrical signal may be determined by a defect site with excitation light, measuring a frequency of a photon emitted by the excited defect site, determining a frequency shift based on the measured frequency of the emitted photon, and determining the electrical signal to be applied to the piezoelectric cantilever based on the frequency shift.