公开(公告)号：US12018192B2

公开(公告)日：2024-06-25

申请号：US17275532

申请日：2019-09-09

申请人： BASF SE

发明人： Hannah Stephanie Mangold ,  Martin Koenemann ,  Sorin Ivanovici

IPC分类号： C09K11/06 ,  H04B10/67

CPC分类号： C09K11/06 ,  H04B10/67 ,  C09K2211/1044

摘要： A receiver comprising a luminescent collector (luminescent detector) comprising at least one organic fluorescent colorant B, an optical data communication system comprising said receiver, and to the use of the luminescent collector as fast photodetector in a receiver for an optical data communication system.

公开(公告)号：US11949247B2

公开(公告)日：2024-04-02

申请号：US17626493

申请日：2020-07-21

申请人： KYOCERA CORPORATION

发明人： Nobuyuki Tetsuka

IPC分类号： H02J50/30 ,  G02B6/42 ,  H04B10/25 ,  H04B10/67

CPC分类号： H02J50/30 ,  G02B6/4214 ,  H04B10/25 ,  H04B10/67

摘要： A powered device includes a plurality of photoelectric conversion elements. The photoelectric conversion elements receive feed light. The photoelectric conversion elements are disposed such that light-receiving surfaces of the photoelectric conversion elements are arranged in a concave shape.

公开(公告)号：US20240105867A1

公开(公告)日：2024-03-28

申请号：US18270267

申请日：2021-10-25

申请人： NEC Corporation

发明人： Koya TAKATA ,  Hisashi MIZUMOTO ,  Fujio OKUMURA

IPC分类号： H01L31/0232 ,  H04B10/112 ,  H04B10/67

CPC分类号： H01L31/0232 ,  H04B10/112 ,  H04B10/67

摘要： A light-receiving device that includes a condenser lens that condenses a spatial optical signal, a beam control element that emits an optical signal derived from the spatial optical signal condensed by the condenser lens toward a predetermined region, and a light-receiving element that is disposed with a light-receiving portion facing the predetermined region and receives the optical signal.

公开(公告)号：US11880068B2

公开(公告)日：2024-01-23

申请号：US17527757

申请日：2021-11-16

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： Yuping Wu ,  Chunhui Zhang ,  Changzheng Su

IPC分类号： H04B10/60 ,  G02B6/26 ,  H04B10/61 ,  H04B10/80 ,  H04J14/02 ,  H04B10/11 ,  H04B10/67 ,  H04B10/112

CPC分类号： G02B6/26 ,  H04B10/61 ,  H04B10/801 ,  H04J14/02 ,  H04B10/11 ,  H04B10/1121 ,  H04B10/60 ,  H04B10/615 ,  H04B10/67

摘要： A space optical coupling apparatus, including M first couplers, a phase adjustment apparatus, N beam splitters, M second couplers, a coupling apparatus, and a controller. The first coupler receives a beam, and couples the beam to the phase adjustment apparatus. The phase adjustment apparatus includes M phase adjusters, N beam splitters, and N detectors. Each beam splitter is configured to split a received beam into two beams, one sent to a corresponding detector and the other sent to a corresponding phase adjuster. The second coupler receives output light from the coupling apparatus, and transmits the output light into the space. The coupling apparatus is configured to couple a beam onto a single-mode fiber. The controller is configured to control, based on the beam intensity detected by the detector and the beam intensity on the single-mode fiber, the M phase adjusters to adjust the phases of the received beams.

公开(公告)号：US20230421268A1

公开(公告)日：2023-12-28

申请号：US18214146

申请日：2023-06-26

申请人： NEC CORPORATION

发明人： Koya Takata ,  Hisashi Mizumoto ,  Fujio Okumura

IPC分类号： H04B10/67

CPC分类号： H04B10/67

摘要： A receiver includes a light receiver including a light-receiving ring including a plurality of light-receiving elements arranged in an annular shape and a light-receiving plate including at least one light-receiving element, a ball lens placed on a ring formed by the light-receiving ring, and a reflector arranged in a gap formed between the light-receiving ring and the light-receiving plate. The plurality of light-receiving elements constituting the light-receiving ring are arranged with a light-receiving surface facing an inner side of the ring formed by the light-receiving ring. The light-receiving element included in the light-receiving plate is disposed inside the ring formed by the light-receiving ring with a light-receiving surface facing the ball lens placed on the light-receiving ring.

公开(公告)号：US20230318715A1

公开(公告)日：2023-10-05

申请号：US18020895

申请日：2021-08-10

申请人： THE UNIVERSITY COURT OF THE UNIVERSITY OF EDINBURGH

发明人： Majid SAFARI ,  Shenjie HUANG

IPC分类号： H04B10/67 ,  H04B10/112

CPC分类号： H04B10/67 ,  H04B10/112

摘要： A receiving device (12) for receiving an optical communication signal, wherein the optical communication signal comprises an encoded or modulated signal, the device comprising: one or more photodetectors (12) configured to produce photodetector signals in response to detecting photons; one or more further photodetectors (14) configured to produce further photodetector signals; a controller (16) configured to select an operational mode of the receiving device in dependence on at least a light level, wherein the operational mode is one of at least a first mode in which a demodulation or decoding process is performed on the photodetector signals and a second mode in which the demodulation or decoding process is performed on the further photodetector signals, and a photon count limiter (18) associated with the one or more photodetector for controlled limiting of the photon count of the one or more photodetectors in dependence on at least a light level.

公开(公告)号：US20230261748A1

公开(公告)日：2023-08-17

申请号：US17670119

申请日：2022-02-11

申请人： RAYTHEON COMPANY

发明人： James Talamonti ,  Andrew Kowalevicz ,  Gary M. Graceffo ,  Benjamin P. Dolgin

IPC分类号： H04B10/2581 ,  H04B10/071 ,  H04B10/67

CPC分类号： H04B10/2581 ,  H04B10/67 ,  H04B10/071

摘要： An optical signal receivers, systems including the optical signal receivers, and methods of operating the same include a multimode fiber circulator including a first port, a second port, and a third port, a first multimode fiber cable coupled to the first port and having an input configured to receive a complex modulated optical signal and provide the complex modulated optical signal to the first port of the multimode fiber circulator, a second multimode fiber cable including a low Q optical resonator coupled to the second port of the multimode fiber circulator that is configured to receive the complex modulated optical signal from the second port of the multimode circulator, and a third multimode fiber cable coupled to the third port of the multimode fiber circulator that is configured to receive a reflected optical signal from the third port of the multimode circulator, the reflected optical signal being reflected from the low Q optical resonator.

公开(公告)号：US11709317B2

公开(公告)日：2023-07-25

申请号：US17530653

申请日：2021-11-19

申请人： FUJITSU LIMITED

发明人： Akio Sugama

IPC分类号： H04B10/61 ,  H04B10/67 ,  H04B10/69 ,  H04J14/02 ,  G02B6/12 ,  G02B6/293 ,  G02B6/126 ,  H04B10/073 ,  H04J14/06 ,  H04B10/40 ,  H04B10/079

CPC分类号： G02B6/12007 ,  G02B6/126 ,  H04B10/073 ,  H04B10/0795 ,  H04B10/40 ,  H04B10/614 ,  H04B10/615 ,  H04B10/616 ,  H04B10/6166 ,  H04B10/67 ,  H04B10/69 ,  H04J14/02 ,  H04J14/06 ,  G02B6/29352 ,  G02B2006/12159 ,  G02B2006/12164

摘要： A wavelength demultiplexer includes a photonic circuit and a control circuit that adjusts wavelength characteristics of the photonic circuit. The photonic circuit converts two orthogonal polarized waves contained in the incident light into two same polarized waves, which are supplied to a first optical demultiplexing circuit and a second optical demultiplexing circuit provided in the photonic circuit and having the same configuration. The photonic circuit supplies a total output power of monitor lights extracted from the same positions in the first optical demultiplexing circuit and the second optical demultiplexing circuit to the control circuit. The control circuit controls a first wavelength characteristic of the first optical demultiplexing circuit and a second wavelength characteristic of the second optical demultiplexing circuit based on the total output power of the monitor lights.

公开(公告)号：US20230213384A1

公开(公告)日：2023-07-06

申请号：US18008257

申请日：2021-06-22

申请人： OSAKA UNIVERSITY

发明人： Tsuyoshi KONISHI ,  Ryohei KAMIKAWA ,  Yu YAMASAKI

IPC分类号： G01J3/12 ,  G01J11/00 ,  H04B10/67

CPC分类号： G01J3/12 ,  G01J11/00 ,  H04B10/67

摘要： An optical signal detection system includes: a nonlinear converter that nonlinearly converts a plurality of first optical signals into a plurality of second optical signals, and also a third optical signal into a fourth optical signal; a spectrometer that obtains each of a plurality of first spectral data items from a different one of the plurality of second optical signals, and also a third spectral data item from the fourth optical signal; and a detection device that detects the third optical signal and outputs a detection result. The detection device includes: an analyzer that performs sparse principal component analysis on the plurality of first spectral data items to generate a plurality of second spectral data items; and a detector that compares the third spectral data item with each of the plurality of second spectral data items, and detects the third optical signal based on the result of the comparison.

公开(公告)号：US20190052360A1

公开(公告)日：2019-02-14

申请号：US16160548

申请日：2018-10-15

申请人： PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

发明人： Hideki AOYAMA ,  Mitsuaki OSHIMA ,  Koji NAKANISHI ,  Toshiyuki MAEDA ,  Akihiro UEKI ,  Kengo MIYOSHI ,  Tsutomu MUKAI

IPC分类号： H04B10/116 ,  H04M11/00 ,  H04B10/50 ,  H04B10/67 ,  H04L7/00

CPC分类号： H04B10/116 ,  H04B10/50 ,  H04B10/67 ,  H04L7/0075 ,  H04M11/00

摘要： A method includes capturing images with an image sensor while switching the shutter speed of the image sensor between a first speed and a second, higher speed. When a captured subject is a barcode, a barcode image is obtained when the shutter speed is the first speed, and barcode information is obtained by decoding the barcode in the image. When a captured subject is a light source, a bright line image including bright lines corresponding to a plurality of exposure lines included in the image sensor is obtained when the shutter speed is the second speed, and a visible light signal is obtained as visible light information by decoding a pattern of the bright lines in the obtained bright line image. The method also includes displaying an image obtained through capturing performed when the shutter speed is the first speed.