公开(公告)号：US20220416903A1

公开(公告)日：2022-12-29

申请号：US17899786

申请日：2022-08-31

申请人： NEC Corporation

发明人： Junichi ABE ,  Tatsuya Nakamura

IPC分类号： H04B10/516 ,  H04L27/38 ,  H04L27/36 ,  H04B10/25

摘要： If a configuration is employed in which modulation schemes used for an optical communication system can be switched depending on transmission conditions, the power consumption increases and the control becomes complex; therefore, an optical transmitter according to an exemplary aspect of the present invention includes an encoding means for encoding digital signals to be transmitted under a predetermined transmission condition over an optical carrier wave by using one of a plurality of encoding methods; an encoding control means for selecting a predetermined encoding method corresponding to the predetermined transmission condition from among the plurality of encoding methods and causing the encoding means to operate in accordance with the predetermined encoding method; a mapping means for mapping output bit signals output from the encoding means to modulation symbols; and an optical modulation means for modulating the optical carrier wave based on symbol signals output from the mapping means.

公开(公告)号：US11539438B2

公开(公告)日：2022-12-27

申请号：US17049023

申请日：2019-04-10

申请人： INSTITUT MINES-TELECOM

发明人： Ghaya Rekaya ,  Akram Abouseif ,  Yves Jaouen

IPC分类号： H04B10/2581 ,  G02B6/14 ,  H04B10/2507 ,  H04B10/516 ,  H04J14/04

摘要： The various embodiments provide an optical transmission system comprising an optical transmitter configured to transmit data over an optical fiber transmission channel made of a multi-core fiber, optical signals carrying the data propagate along the multi-core fiber according to two or more cores, the multi-core fiber being associated with fiber parameters and misalignment losses values, wherein the optical transmission system comprises a system administration device configured to determine a core dependent loss value depending on the fiber parameters and misalignment losses values.

公开(公告)号：US20220404651A1

公开(公告)日：2022-12-22

申请号：US17896547

申请日：2022-08-26

申请人： Huawei Technologies Co., Ltd.

发明人： Chengcheng Gui ,  Yanbo Li ,  Xiaolu Song

IPC分类号： G02F1/035 ,  H04B10/516 ,  H04B10/50

摘要： An optical modulator includes a waveguide layer, an electro-optical material layer, and electrodes. The waveguide layer includes a sub-wavelength waveguide; the electro-optical material layer is disposed on a surface of the sub-wavelength waveguide, and the sub-wavelength waveguide is configured to diffuse a light field at the waveguide layer into the electro-optical material layer; the electrodes are disposed on a surface of the electro-optical material layer, and a connection line between the electrodes is parallel to a plane on which the electro-optical material layer is located, or the electrodes are disposed on two sides of the electro-optical material layer, and a connection line between the electrodes intersects with a plane on which the electro-optical material layer is located; and the electrodes are configured to apply an electrical signal to the electro-optical material layer.

公开(公告)号：US11533549B2

公开(公告)日：2022-12-20

申请号：US17300099

申请日：2021-03-05

申请人： Mohammad A. Mazed

发明人： Mohammad A. Mazed

IPC分类号： H04Q11/00 ,  H04B10/272 ,  H04J14/02 ,  H01S3/101 ,  H04B10/516 ,  H01S5/026 ,  H01S5/0625

摘要： An intelligent subsystem coupled with a system-on-chip (comprising a microprocessor/graphic processor), a radio transceiver, a voice processing module/voice processing algorithm, a foldable/stretchable display, a near-field communication device, a biometric sensor and an intelligent learning algorithm is disclosed. The intelligent subsystem can respond to a user's interests and/or preferences. Furthermore, the intelligent subsystem is sensor-aware or context-aware.

公开(公告)号：US20220385363A1

公开(公告)日：2022-12-01

申请号：US17752833

申请日：2022-05-24

申请人： eSTS, Inc.

发明人： Dennis L. Gette ,  Thomas J. McAvoy

IPC分类号： H04B10/112 ,  H04B10/516 ,  H04B10/50

摘要： An invisible light communication system can communicate using infrared or ultraviolet light signals to provide more secure communications. The system includes a software definable and hardware configurable transmitter that uses an input, an encoder, an invisible light source, and an optic to transmit an invisible light signal. The system also includes a software definable and hardware configurable receiver that receives the invisible light signal using an optic, a detector, a detector, and an output. Applications for the invisible light communication system include fixed, deployable, vehicle, and wearable configurations for voice, video and data transmission and receipt in support of a variety of use cases: remote sensing; data exfiltration; remote control, ordnance detonation; tactical chat/messaging; point-to-point and point-to-multipoint audio communications; and full motion video.

公开(公告)号：US20220368420A1

公开(公告)日：2022-11-17

申请号：US17536405

申请日：2021-11-29

申请人： Microsoft Technology Licensing, LLC

发明人： Winston Allen SAUNDERS ,  Christian L. BELADY ,  Lisa Ru-Feng HSU ,  Hitesh BALLANI ,  Paolo COSTA ,  Douglas CARMEAN

IPC分类号： H04B10/112 ,  H04B10/66 ,  H04B10/516 ,  H04B10/40

摘要： A system for using free-space optics to interconnect a plurality of computing nodes can include a plurality of optical transceivers that facilitate free-space optical communications among the plurality of computing nodes. The system may ensure a line of sight between the plurality of computing nodes and the optical transceivers to facilitate the free-space optical communications. The line of sight may be preserved by the position or placement of the computing nodes in the system. The position or placement of the computing nodes may be achieved by using different shaped enclosures for holding the computing nodes.

公开(公告)号：US20220360340A1

公开(公告)日：2022-11-10

申请号：US17620426

申请日：2019-06-25

申请人： Nippon Telegraph and Telephone Corporation

发明人： Mitsumasa Nakajima ,  Shiori Konisho ,  Toshikazu Hashimoto

IPC分类号： H04B10/572 ,  H04B10/516

摘要： An optical transmission and reception system includes an optical transmitter including an optical modulator that optically modulates a transmission signal containing a known signal inserted at predetermined intervals and transmits it to an optical transmission line, and an optical receiver including an optical RC circuit that converts an optical modulation signal received from the optical transmission line into a complex time series signal, a photoelectric conversion element that converts the complex time series signal into an electrical intensity signal, and a digital signal processing unit that performs learning using the known signal as a teaching signal and performs demodulation, based on learning results, using the electrical intensity signal received from the photoelectric conversion element.

公开(公告)号：US11496217B2

公开(公告)日：2022-11-08

申请号：US17134023

申请日：2020-12-24

申请人： Infinera Corporation

发明人： Steven Joseph Hand ,  Tulasi Veguru ,  Prasad Paranjape ,  Han Henry Sun

IPC分类号： H04B10/118 ,  H04B10/61 ,  H04B10/50 ,  H04B10/29 ,  H04B10/40 ,  H04B10/516

摘要： An example apparatus includes a first communications module having a first transceiver. The first communications module is operable to transmit, using the first transceiver, a plurality of first groups of optical subcarriers to a plurality of second communications modules via free-space optical communication. The first groups of optical subcarriers carry first data, and each of the first groups of optical subcarriers is associated, respectively, with a different one of the second communications modules. The first communications module is also operable to receive, using the first transceiver, plurality of second groups of optical subcarriers from the second communications modules via free-space optical communication. The second groups of optical subcarriers carry second data and each of the second groups of optical subcarriers is associated, respectively, with a different one of the second communications modules.

公开(公告)号：US11493710B2

公开(公告)日：2022-11-08

申请号：US16981926

申请日：2019-02-15

申请人： NEC Corporation

发明人： Shinya Maruyama

IPC分类号： G02B6/42 ,  G02F1/225 ,  H04B10/07 ,  H04B10/516 ,  H04J14/06 ,  G02F1/21

摘要： A pluggable optical module according to the present invention includes a pluggable electric connector configured so as to be insertable into and removable from an optical transmission apparatus, and capable of transmitting/receiving a data signal to/from the optical transmission apparatus, a drive unit configured to output first/second driving signals by amplifying the data signal, an optical signal output unit configured to output a first/second optical signal modulated according to the first/second drive signal, a light-intensity monitoring unit configured to monitor intensities of the first/second optical signals, a control unit configured to control a gain of the drive unit so as to adjust a difference between the intensities of the first/second optical signals based on a result of the monitoring by the light-intensity monitoring unit, and a pluggable optical receptor configured so that an optical fiber can be inserted thereinto and removed therefrom, and configured to output the first/second optical signals.

公开(公告)号：US20220352989A1

公开(公告)日：2022-11-03

申请号：US17845934

申请日：2022-06-21

申请人： Infinera Corporation

发明人： Steven Joseph Hand ,  Ahmed Awadala ,  Luis A. Perez ,  Vincent G. Dominic ,  Kuang-Tsan Wu

IPC分类号： H04B10/564 ,  H04L1/00 ,  H04B10/516 ,  H04B10/61

摘要： Optical network systems are disclosed, including systems having transmitters with a digital signal processor comprising forward error correction circuitry that provides encoded first electrical signals based on input data; and power adjusting circuitry that receives second electrical signals indicative of the first electrical signals, the power adjusting circuitry supplying third electrical signals, wherein each of the third electrical signals is indicative of an optical power level of a corresponding to one of a plurality of optical subcarriers output from an optical transmitter.