公开(公告)号：US12019353B2

公开(公告)日：2024-06-25

申请号：US18045936

申请日：2022-10-12

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Matthew W. Puckett ,  Chad Hoyt ,  Karl Nelson ,  Jianfeng Wu

IPC: G02F1/365 ,  G02F1/35

CPC classification number: G02F1/365 ,  G02F1/3542 ,  G02F2201/307 ,  G02F2203/56

Abstract: An optical frequency comb generation system includes an optical waveguide portion having a uniform width, a first chirped Bragg grating disposed at one end of the optical waveguide portion and a second chirped Bragg grating disposed at the other end of the optical waveguide portion. The first chirped Bragg grating includes at least a first periodic variation having a first refractive index and a second periodic variation having a second refractive index. The second chirped Bragg grating includes the at least first and second periodic variations. A first cavity associated with a first resonant frequency extends between the first periodic variation of the first chirped Bragg grating and the first periodic variation of the second chirped Bragg grating. A second cavity associated with a second resonant frequency extends between the second periodic variation of the first chirped Bragg grating and the second periodic variation of the second chirped Bragg grating.

公开(公告)号：US20230291483A1

公开(公告)日：2023-09-14

申请号：US18197751

申请日：2023-05-16

Applicant: ZHEJIANG LAB

Inventor： Qiang ZHANG ,  Hui YU

IPC: H04B10/60 ,  G02F1/295 ,  G02F1/31 ,  G02F1/313

CPC classification number: H04B10/60 ,  G02F1/2955 ,  G02F1/311 ,  G02F1/3131 ,  G02F2202/10 ,  G02F2201/307 ,  G02F2203/70 ,  G02F2201/06 ,  G02F2201/205 ,  G02F2203/58

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.

公开(公告)号：US11693363B2

公开(公告)日：2023-07-04

申请号：US16945788

申请日：2020-07-31

Applicant: Massachusetts Institute of Technology

Inventor： Sundeep Jolly ,  Nickolaos Savidis ,  V. Michael Bove, Jr. ,  Bianca Datta ,  Daniel E. Smalley

IPC: G02B6/04 ,  G03H1/02 ,  F21V8/00 ,  G02B27/01 ,  G02F1/33 ,  G02F1/335 ,  G02B5/32 ,  G03H1/00 ,  G03H1/26 ,  G03H1/22 ,  G02B6/34

CPC classification number: G03H1/0248 ,  G02B5/32 ,  G02B6/005 ,  G02B6/0016 ,  G02B6/0078 ,  G02B27/0172 ,  G02F1/332 ,  G02F1/335 ,  G03H1/0005 ,  G03H1/2286 ,  G03H1/2645 ,  G02B6/34 ,  G02B2027/014 ,  G02B2027/015 ,  G02B2027/0123 ,  G02B2027/0174 ,  G02F2201/124 ,  G02F2201/307 ,  G02F2202/20 ,  G02F2203/07 ,  G03H2001/0088 ,  G03H2223/16 ,  G03H2223/23 ,  G03H2223/24 ,  G03H2225/21 ,  G03H2225/60 ,  G03H2226/02 ,  G03H2227/02

Abstract: A holographic display is comprised of space-multiplexed elemental modulators, each of which consists of a surface acoustic wave transducer atop an anisotropic waveguide. Each “line” of the overall display consists of a single anisotropic waveguide across the display's length with multiple surface acoustic wave transducers spaced along the waveguide length, although for larger displays, the waveguide may be divided into segments, each provided with separate illumination. Light that is undiffracted by a specific transducer is available for diffraction by subsequent transducers. Per transducer, guided-mode light is mode-converted to leaky-mode light, which propagates into the substrate away from the viewer before encountering a volume reflection grating and being reflected and steered towards the viewer. The display is transparent and all reflection volume gratings operate in the Bragg regime, thereby creating no dispersion of ambient light.

公开(公告)号：US20180143509A1

公开(公告)日：2018-05-24

申请号：US15815567

申请日：2017-11-16

Applicant: Magic Leap, Inc.

Inventor： Chulwoo Oh

IPC: G02F1/365 ,  G02F1/00 ,  G02F1/1335

CPC classification number: G02F1/365 ,  G02B3/00 ,  G02F1/0045 ,  G02F1/133528 ,  G02F2001/133541 ,  G02F2201/30 ,  G02F2201/305 ,  G02F2201/307

Abstract: A two-dimensional waveguide light multiplexer is described herein that can efficiently multiplex and distribute a light signal in two dimensions. An example of a two-dimensional waveguide light multiplexer can include a waveguide, a first diffraction grating, and a second diffraction grating disposed above the first diffraction grating and arranged such that the grating direction of the first diffraction grating is perpendicular to the grating direction of the second diffraction grating. Methods of fabricating a two-dimensional waveguide light multiplexer are also disclosed.

公开(公告)号：US20180113303A1

公开(公告)日：2018-04-26

申请号：US15796169

申请日：2017-10-27

Applicant: DIGILENS, INC.

Inventor： Milan Momcilo POPOVICH ,  Jonathan David WALDERN ,  Alastair John GRANT

IPC: G02B27/00 ,  G02F1/313 ,  F21V8/00 ,  G02B6/34 ,  G02B6/42 ,  G02F1/295 ,  G02B27/01 ,  A61B3/113 ,  G02F1/29 ,  G02F1/1334 ,  G02B5/18 ,  H04N5/33 ,  G06K9/00

CPC classification number: G02B27/0093 ,  A61B3/113 ,  G02B5/18 ,  G02B6/0016 ,  G02B6/34 ,  G02B6/4287 ,  G02B27/017 ,  G02B27/0172 ,  G02B2027/0138 ,  G02B2027/014 ,  G02B2027/0174 ,  G02B2027/0187 ,  G02F1/13342 ,  G02F1/292 ,  G02F1/2955 ,  G02F1/3132 ,  G02F2001/294 ,  G02F2201/16 ,  G02F2201/30 ,  G02F2201/302 ,  G02F2201/305 ,  G02F2201/307 ,  G02F2203/24 ,  G02F2203/28 ,  G02F2203/62 ,  G06K9/0061 ,  H04N5/33

Abstract: An eye tracker comprises a light source; a detector; and first and second waveguides. The first waveguide comprises an input coupler for coupling source light into a waveguide path and a first grating for coupling light out of the waveguide path onto an eye. The second waveguide comprises a second grating for coupling light reflected from the eye into a waveguide path and an output coupler for coupling light out of the waveguide path onto the detector. The second grating is optically configured for imaging the eye onto the detector.

公开(公告)号：US09946134B2

公开(公告)日：2018-04-17

申请号：US13962069

申请日：2013-08-08

Applicant: Lumentum Operations LLC

Inventor： John Michael Miller ,  Gonzalo Wills

IPC: G02F1/1335 ,  G02B5/32 ,  G02B5/30 ,  G02F1/153

CPC classification number: G02F1/1335 ,  G02B5/3083 ,  G02B5/32 ,  G02F1/133504 ,  G02F1/1533 ,  G02F2201/307

Abstract: A sub-wavelength grating is placed inside a liquid crystal variable optical retarder to reduce polarization dependence of the optical retardation generated by the variable optical retarder. A small thickness of the sub-wavelength grating, as compared to a conventional waveplate, reduces the driving voltage penalty due to the in-cell placement of the sub-wavelength grating.

公开(公告)号：US09915832B2

公开(公告)日：2018-03-13

申请号：US15282592

申请日：2016-09-30

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Yu Horie ,  Amir Arbabi ,  Andrei Faraon

IPC: G02F1/07 ,  G02F1/00 ,  G02F1/017 ,  G02F1/01 ,  G02F1/29 ,  G02F1/19 ,  G02F1/015

CPC classification number: G02F1/017 ,  G02F1/0107 ,  G02F1/19 ,  G02F1/292 ,  G02F2001/0151 ,  G02F2001/0154 ,  G02F2201/307 ,  G02F2203/10 ,  G02F2203/12 ,  G02F2203/18

Abstract: Methods and systems for controlling the phase of electromagnetic waves are disclosed. A device can consist of a guided resonance grating layer, a spacer, and a reflector. A plurality of devices, arranged in a grid pattern, can control the phase of reflected electromagnetic phase, through refractive index control. Carrier injection, temperature control, and optical beams can be applied to control the refractive index.

公开(公告)号：US20170351087A1

公开(公告)日：2017-12-07

申请号：US15621581

申请日：2017-06-13

Applicant: Joshua Noel Hogan

Inventor： Joshua Noel Hogan

IPC: G02B26/00 ,  H01S3/11 ,  H01S3/105 ,  H01S3/08 ,  G02B27/28 ,  G02B5/18 ,  G02F1/01 ,  G02B27/42 ,  G02B26/08 ,  H01S3/10

CPC classification number: G02B26/00 ,  G02B5/1828 ,  G02B26/0808 ,  G02B27/286 ,  G02B27/4261 ,  G02F1/0136 ,  G02F2201/307 ,  G02F2202/16 ,  H01S3/08054 ,  H01S3/10061 ,  H01S3/105 ,  H01S3/1106 ,  H01S3/1109

Abstract: The invention taught herein provides a method, device and system for modulating or switching electromagnetic radiation by controlling a state of the radiation, such as a polarization state. Radiation is directed at a reflective or transmissive structure, such that the radiation is incident on the structure. The structure includes a property that can be dynamically switched between two configurations, one of which is asymmetric and is configured to modify the polarization characteristic of the radiation. The dynamically configurable structure can be combined with polarization components to achieve modulation. Embodiments suitable for mode-locking a laser and for cavity dumping a mode-locked laser are also disclosed.

公开(公告)号：US09762022B2

公开(公告)日：2017-09-12

申请号：US15036193

申请日：2013-12-05

Applicant: Mitsubishi Electric Corporation

Inventor： Fumio Shoda ,  Takayuki Yanagisawa ,  Yosuke Akino

IPC: H01S3/109 ,  G02F1/37 ,  H01S5/14 ,  H01S3/08 ,  H01S3/094 ,  G02F1/35 ,  H01S5/40

CPC classification number: H01S3/109 ,  G02F1/37 ,  G02F2001/3503 ,  G02F2201/305 ,  G02F2201/307 ,  H01S3/07 ,  H01S3/08009 ,  H01S3/08054 ,  H01S3/08086 ,  H01S3/0826 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/1055 ,  H01S5/005 ,  H01S5/0071 ,  H01S5/0092 ,  H01S5/141 ,  H01S5/143 ,  H01S5/4012 ,  H01S5/4087

Abstract: The multi wavelength laser device includes a laser light source 10 that emits a plurality of laser lights 20 whose fundamental wavelengths differ from one another, a dispersing element 30 that changes the traveling direction of each of the plurality of laser lights according to the wavelength and the incidence direction, and that emits the laser lights in a state in which the laser lights are superposed on the same axis, and a wavelength conversion element 40 that has a plurality of polarization layers disposed therein and having different periods, and that performs wavelength conversion on the fundamental wave laser lights emitted from the dispersing element 30 and placed in the state in which the laser lights are superposed on the same axis, and emits a plurality of laser lights 50 acquired through the wavelength conversion in a state in which the laser lights are superposed on the same axis.

公开(公告)号：US09733402B2

公开(公告)日：2017-08-15

申请号：US14640423

申请日：2015-03-06

Applicant: UNIVERSITY OF SOUTHERN CALIFORNIA

Inventor： He Liu ,  Yuhan Yao ,  Wei Wu

IPC: G02F1/153 ,  G02F1/01 ,  G02B5/18 ,  G02B26/00 ,  G02F1/23 ,  G02F1/19 ,  G02F1/21

CPC classification number: G02B5/1842 ,  G02B5/1809 ,  G02B5/1814 ,  G02B5/1828 ,  G02B26/005 ,  G02B26/007 ,  G02F1/19 ,  G02F1/21 ,  G02F1/23 ,  G02F2201/307 ,  G02F2203/12

Abstract: A sub-pixel unit for a reflective display includes a color filter including a tunable high contrast grating. The tunable high contrast grating reflects light within a first range of wavelengths, and the sub-pixel unit can exist in a first state and a second state, the first state reflecting at least one of (i) light within a different range of wavelengths, and (ii) light of a different intensity level, than the second state.