公开(公告)号：US20240340088A1

公开(公告)日：2024-10-10

申请号：US18176044

申请日：2023-02-28

Applicant: Kabushiki Kaisha Toshiba

Inventor： Thomas ROGER ,  Chithrabhanu PERUMANGATT ,  Mirko SANZARO ,  Davide MARANGON ,  Ravinder SINGH ,  Andrew James SHIELDS

IPC: H04B10/532 ,  G02B6/27 ,  H04B10/11 ,  H04B10/70

CPC classification number: H04B10/532 ,  G02B6/2706 ,  G02B6/2773 ,  H04B10/11 ,  H04B10/70

Abstract: A combining unit for combining a first optical input and a second optical input, the first optical input comprising a first polarisation maintaining fibre “PMF” having a fast optical axis and a slow optical axis, the second optical input comprising a second PMF having a fast optical axis and a slow optical axis, the combining unit being configured to combine the first optical input with the second optical input in free space such that the fast and slow optical axis of the first PMF and the second PMF are rotated with respect to one another by a non-zero angle to produce a combined signal.

公开(公告)号：US12085760B2

公开(公告)日：2024-09-10

申请号：US17575534

申请日：2022-01-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shimao Li ,  Yunfei Yan ,  Bing Zou

IPC: G02B6/293 ,  G02B6/27 ,  G02B26/08 ,  H04B10/294 ,  H04B10/564

CPC classification number: G02B6/29391 ,  G02B6/272 ,  G02B6/2773 ,  G02B6/2938 ,  G02B26/0808 ,  H04B10/2941 ,  H04B10/564 ,  Y02D30/70

Abstract: One example power equalizer includes an input/output assembly, a multiplexer/demultiplexer, a pre-attenuation component, and a light beam modulator. The multiplexer/demultiplexer demultiplexes a first light beam into a plurality of first sub-wavelength light beams including a particular sub-wavelength light beam, and propagates the plurality of first sub-wavelength light beams to the pre-attenuation component. The pre-attenuation component makes the particular sub-wavelength light beam incident onto the light beam modulator at a preset angle. The light beam modulator performs angular deflection on the plurality of first sub-wavelength light beams to obtain a plurality of second sub-wavelength light beams. The pre-attenuation component then propagates the plurality of second sub-wavelength light beams to the multiplexer/demultiplexer. The multiplexer/demultiplexer multiplexes the plurality of second sub-wavelength light beams into a second light beam.

公开(公告)号：US20240295694A1

公开(公告)日：2024-09-05

申请号：US18177552

申请日：2023-03-02

Applicant: Cisco Technology, Inc.

Inventor： Jock T. BOVINGTON ,  Mark C. NOWELL ,  Matthew J. TRAVERSO ,  Long CHEN

IPC: G02B6/126 ,  G02B6/27

CPC classification number: G02B6/126 ,  G02B6/2766 ,  G02B6/2773

Abstract: A system, method, and photonic chip for an optical circulator are described. The system includes a first polarization splitter, a first optical circuit, and a first controller. The first polarization splitter receives, at a first port of the first polarization splitter, a first optical signal. The first optical circuit is optically coupled to the first polarization splitter. The first optical circuit includes a first plurality of phase shifters. The first optical circuit receives, at a first port of the first optical circuit, a second optical signal. The first controller adjusts the first plurality of phase shifters such that the first optical circuit outputs the first optical signal at a second port of the first optical circuit and such that the first polarization splitter outputs the second optical signal at the first port of the first polarization splitter.

公开(公告)号：US11985456B1

公开(公告)日：2024-05-14

申请号：US18205645

申请日：2023-06-05

Applicant: Bradley T Sako

Inventor： Bradley T Sako

IPC: H04Q11/00 ,  G02B6/27 ,  H04B10/516 ,  H04J14/02

CPC classification number: H04Q11/0062 ,  G02B6/2773 ,  H04B10/516 ,  H04J14/0205 ,  H04Q2011/0081

Abstract: A system can include a splitter configured to receive a first optical signal carrying first data and generate a first optical signal copy and second optical signal copy. Also included is at least one optical processing path includes at least one optical encoder configured to transform the first optical signal copy into a second optical signal carrying the first data and an additional optical feature not present in the first optical signal, at least one optical modulator configured to optically modulate the second optical signal according to a compare data to generate an optical match signal that indicates matches between the compare data and the first data, and at least one photodetector configured to generate an electrical match signal in response to the optical match signal. Corresponding methods are also disclosed.

公开(公告)号：US20230417910A1

公开(公告)日：2023-12-28

申请号：US18242519

申请日：2023-09-06

Applicant: SiLC Technologies, Inc.

Inventor： Prakash Koonath ,  Shuren Hu ,  Mehdi Asghari ,  Bradley Jonathan Luff ,  Behnam Behroozpour

IPC: G01S17/32 ,  G02F1/01 ,  G01S7/481 ,  G01S7/499 ,  G02B6/28 ,  G02B6/27 ,  G02B6/12

CPC classification number: G01S17/32 ,  G02F1/0136 ,  G01S7/481 ,  G02B6/12004 ,  G02B6/2813 ,  G02B6/2773 ,  G01S7/4817 ,  G01S7/499

Abstract: Systems and methods described herein are directed to polarization separation of incoming light signals associated with an imaging system, such as a Light Detection and Ranging (LIDAR) system. Example embodiments describe a system configured to direct incoming light signals to a polarization separator and capture the two polarization states of the incoming light signals. The system may process the two polarization states of the incoming light signals separately to extract information associated with reflecting objects within the field-of-view of the imaging system. The polarization separator may be a birefringent crystal positioned adjacent to an edge of a photonic integrated circuit (PIC) that is used for processing outgoing and incoming light signals associated with the imaging system. The PIC may include at least one on-chip polarization rotator for converting a light signal of one polarization state to a light signal of another polarization state.

公开(公告)号：US11761754B2

公开(公告)日：2023-09-19

申请号：US17964799

申请日：2022-10-12

Applicant: Intuitive Surgical Operations, Inc.

Inventor： Mark E. Froggatt ,  Eric E. Sanborn ,  Alexander K. Sang

IPC: G01B11/16 ,  G02B6/02 ,  G02B27/30 ,  G01B9/02 ,  G01D5/353 ,  G02B5/04 ,  G02B27/28 ,  G02B6/27

CPC classification number: G01B11/161 ,  G01B9/02049 ,  G01D5/35306 ,  G02B5/04 ,  G02B6/02 ,  G02B27/283 ,  G02B27/30 ,  G01B2290/70 ,  G02B6/2706 ,  G02B6/2773

Abstract: Example embodiments include an optical assembly for an optical interrogation system having a single core or a multicore sensing fiber, a measurement fiber to couple light into the sensing fiber, and a reference fiber arranged with the measurement fiber as part of an optical interferometer. A beam splitter combines light from the sensing fiber and with light from the reference fiber. A polarization beam splitting prism separates the combined light into first polarized light and second polarized light that is orthogonal to the first polarized light. The optical assembly can substantially reduce the size, complexity, or cost associated with the traditional optical components in an optical interrogation system that it replaces. Other example optical assemblies are described. Embodiments describe optical interrogation systems using the example optical assemblies.

公开(公告)号：US20230280535A1

公开(公告)日：2023-09-07

申请号：US18114824

申请日：2023-02-27

Applicant: Shanghai University

Inventor： Tingyun WANG ,  Chuanlu DENG ,  Yi HUANG ,  Xiaobei ZHANG

IPC: G02B6/27

CPC classification number: G02B6/272 ,  G02B6/2773

Abstract: Disclosed is an optical waveguide multi-cascaded coupling mode division multiplexer. The optical waveguide multi-cascaded coupling mode division multiplexer comprises an optical waveguide layer and a substrate layer, wherein the optical waveguide layer comprises a first optical waveguide and a second optical waveguide; the second optical waveguide comprises a transmission optical waveguide and a plurality of coupling structures; each coupling structure comprises a coupling optical waveguide and a connecting optical waveguide; the coupling optical waveguide and the transmission optical waveguide are connected through the connecting optical waveguide; the coupling optical waveguide is parallel to the transmission optical waveguide; and the distance between the coupling optical waveguide and the first optical waveguide is smaller than that between the transmission optical waveguide and the first optical waveguide.

公开(公告)号：US20190137816A1

公开(公告)日：2019-05-09

申请号：US16241380

申请日：2019-01-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xinhua Xiao ,  Xiao Andy Shen ,  Yan Wang

IPC: G02F1/1335 ,  G02B6/27 ,  G02F1/035 ,  H04Q11/00

CPC classification number: G02F1/133528 ,  G02B6/2773 ,  G02F1/0353 ,  G02F2001/13355 ,  G02F2001/133628 ,  H04J14/0212 ,  H04J14/0267 ,  H04Q11/0003 ,  H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0022

Abstract: A data center includes a wavelength source, a first optical component, a first communications device, and a second communications device. The wavelength source is configured to generate an N-wavelength laser beam. The first port of the first optical component is configured to receive an M-wavelength laser beam from the wavelength source. The second port of the first optical component is configured to send the M-wavelength laser beam to the first communications device. The M-wavelength laser beam includes at least a first-wavelength laser beam. The second port of the first optical component is further configured to receive a modulated first optical signal from the first communications device, the modulated first optical signal is obtained after the first communications device modulates a service signal onto the first-wavelength laser beam. The third port of the first optical component is configured to send the modulated first optical signal to the second communications device.

公开(公告)号：US20190115995A1

公开(公告)日：2019-04-18

申请号：US16158001

申请日：2018-10-11

Applicant: Luxtera, Inc.

Inventor： Subal Sahni ,  John Andrew Guckenberger

IPC: H04J14/06 ,  G02B6/30 ,  G02B6/293 ,  G02B6/34 ,  G02B6/27 ,  H04J14/02 ,  H04B10/40 ,  H04B10/25

CPC classification number: H04J14/06 ,  G02B6/2706 ,  G02B6/2773 ,  G02B6/29362 ,  G02B6/2938 ,  G02B6/30 ,  G02B6/34 ,  H04B10/25 ,  H04B10/2572 ,  H04B10/40 ,  H04J14/02 ,  H04J14/0256

Abstract: Methods and systems for eliminating polarization dependence for 45 degree incidence MUX/DEMUX designs may include an optical transceiver, where the optical transceiver comprises an input optical fiber, a beam splitter, and a plurality of thin film filters coupled to a photonics die. The thin film filters are arranged above corresponding grating couplers in the photonics die. The transceiver may receive an input optical signal comprising different wavelength signals via the input optical fiber, split the input optical signal into signals of first and polarizations using the beam splitter by separating the signals of the second polarization laterally from the signals of the first polarization, communicate the signals of the first polarization and the second polarization to the plurality of thin film filters, and reflect signals of each of the plurality of different wavelength signals to corresponding grating couplers in the photonics die using the thin film filters.

公开(公告)号：US20180284352A1

公开(公告)日：2018-10-04

申请号：US15941024

申请日：2018-03-30

Applicant: Sumitomo Osaka Cement Co., Ltd

Inventor： Norikazu MIYAZAKI ,  Yoichi HOSOKAWA ,  Yuu KATAOKA

IPC: G02B6/32 ,  G02B6/27

CPC classification number: G02B6/32 ,  G02B6/2773 ,  G02B6/30 ,  G02F1/225 ,  G02F2001/212

Abstract: Provided is an optical element module including: a substrate; an optical modulator unit that is formed in the substrate and includes an optical waveguide; a first lens unit that is disposed on an end surface of the substrate, and includes a lens portion at which a signal light beam emitted from the optical modulator unit is collimated; and a second lens unit that introduces the signal light beam passing through the first lens unit to an optical fiber. The optical modulator unit includes a Mach-Zehnder type optical waveguide, a Y-branch coupler of the Mach-Zehnder type optical waveguide includes an output waveguide through which a signal light beam is guided, and a radiated light beam waveguide through which a radiated light beam is guided, and an unnecessary light beam removing unit, which suppresses input of a higher-order mode light beam propagating through the output waveguide or a leaked light beam propagating through the inside of the substrate into the optical fiber through the lens portions of the first lens unit, is provided between the output waveguide and the radiated light beam waveguide in the vicinity of an end of the substrate.