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公开(公告)号：US20240235684A1
公开(公告)日：2024-07-11
申请号：US18398461
申请日：2023-12-28
申请人： NEC Corporation
发明人： Yusuke SASAKI
IPC分类号： H04B10/291 , G02B6/02 , H04B10/25
CPC分类号： H04B10/2912 , G02B6/02042 , H04B10/25
摘要： In an optical amplification device using a multicore optical fiber, it is difficult to efficiently amplify signal light. In order to solve this problem, an optical amplification device according to the present disclosure includes an optical fiber amplification unit including a plurality of amplification cores, a first connection unit being connected to one end of the optical fiber amplification unit, and a second connection unit being connected to another end of the optical fiber amplification unit, wherein the first connection unit is configured in such a way as to connect a transmission fiber including a plurality of transmission cores to the optical fiber amplification unit, and the number of the plurality of amplification cores is larger than the number of the plurality of transmission cores.
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2.发明授权公开(公告)号：US12034486B2
公开(公告)日：2024-07-09
申请号：US17990331
申请日：2022-11-18
发明人： Qiang Guo , Kui Ouyang , Minghui Liu , Shiyi Cao
IPC分类号： H04B10/564 , H04B10/291 , H04B10/294
CPC分类号： H04B10/564 , H04B10/2916 , H04B10/2941
摘要： A filter includes a first filter component coupled to a second filter component. The first filter component is configured to receive an optical signal, and filter the optical signal based on a first power difference of signals transmitted on a plurality of frequency bands in the optical signal, where the first power difference includes a difference caused by a first doped optical fiber. The second filter component is loaded with a first driving electrical signal used to control a frequency response of the second filter component. The second filter component is configured to filter, using the frequency response based on a second power difference of the signals transmitted on the plurality of frequency bands, an optical signal obtained after the filtering by the first filter component.
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3.发明授权公开(公告)号：US11881675B2
公开(公告)日：2024-01-23
申请号：US17601152
申请日：2020-04-02
申请人： NEC Corporation
IPC分类号： H04B10/291 , H01S3/067 , H01S3/13 , G02B6/02
CPC分类号： H01S3/06754 , G02B6/02042 , H01S3/13013 , H04B10/2912
摘要： It is difficult to construct an optical fiber transmission system enabling relay optical amplification using a coupled multi-core optical fiber as an optical transmission path; therefore, an optical amplification device includes first optical spatial layout converting means for converting a spatial layout of a plurality of optical signal beams propagating through each of a plurality of cores, from a coupled state in which optical signal beams interfere between a plurality of cores to a non-coupled state in which optical signal beam interference is reduced between a plurality of cores; optical amplifying means for amplifying, in the non-coupled state, the plurality of optical signal beams with the non-coupled state and generating a plurality of amplified optical signal beams; and second optical spatial layout converting means for converting a spatial layout of the plurality of amplified optical signal beams from the non-coupled state to the coupled state.
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公开(公告)号：US20230327767A1
公开(公告)日：2023-10-12
申请号：US18025109
申请日：2020-09-11
申请人： NEC Corporation
IPC分类号： H04B10/291 , H01S3/067 , H01S3/094
CPC分类号： H04B10/2912 , H01S3/094003 , H01S3/06737
摘要： The optical transmission system of the present invention includes a multi-core transmission path which includes a plurality of cores, and in which optical signals propagate through the plurality of cores, a first optical repeating means for amplifying the optical signals by individually exciting first multi-core optical amplification mediums, and a second optical repeating means for amplifying the optical signals by collectively exciting second multi-core optical amplification mediums, wherein the first optical repeating means is positioned spaced apart from the second optical repeating means by a distance determined on the basis of either a first transmissible distance due to the first optical repeating means and a second transmissible distance due to the second optical repeating means.
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公开(公告)号：US11700063B2
公开(公告)日：2023-07-11
申请号：US17687436
申请日：2022-03-04
申请人： Volley Base, Inc.
IPC分类号： H04B10/50 , H04B10/291 , H04B10/69
CPC分类号： H04B10/502 , H04B10/291 , H04B10/6911
摘要： An apparatus embodiment includes a remote control interface unit configured to accept an appliance control code carried in a radio frequency signal transmitted from a smart phone, extract the appliance control code from the radio frequency signal, send the extracted appliance control code to an optical frequency interface, and initiate transmission of an optical frequency signal including the appliance control code to an appliance configured to receive signals from an optical remote control.
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公开(公告)号：US11626927B2
公开(公告)日：2023-04-11
申请号：US17532331
申请日：2021-11-22
发明人： Ricky Perry , Kent McCammon
IPC分类号： H04B10/2575 , H04B10/291 , H04J14/02 , H04Q11/00 , H04B10/572
摘要： Aspects of the subject disclosure may include, for example, receiving a first optical signal from a first optical network via a first port of the wavelength converter, receiving a second optical signal from a second optical network via a second port of the wavelength converter, modulating the first optical signal with the second light signal to generate a third optical signal, eliminating the first light signal from the third optical signal to generate a fourth optical signal, and transmitting the fourth optical signal through the second optical network. The first optical signal can include a first digital signal modulated onto a first light signal of a first wavelength, the second optical signal can include a second light signal can include a second wavelength different from the first wavelength, and the fourth optical signal can include the first digital signal modulated onto the second light signal. Other embodiments are disclosed.
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公开(公告)号：US11611398B2
公开(公告)日：2023-03-21
申请号：US17487138
申请日：2021-09-28
申请人： X DEVELOPMENT LLC
IPC分类号： H04B10/80 , H04B10/291 , H04B10/564
摘要： An optical communication system includes an optical transmitter and one or more processors. The optical transmitter is configured to output an optical signal, and includes an average-power-limited optical amplifier, such as an erbium-doped fiber amplifier (EDFA). The one or more processors are configured to receive optical signal data related to a received power for a communication link from a remote communication system and determine that the optical signal data is likely to fall below a minimum received power within a time interval. In response to the determination, the one or more processors are configured to determine a duty cycle of the optical transmitter based on a minimum on-cycle length and a predicted EDFA output power and operate the optical transmitter using the determined duty cycle to transmit an on-cycle power that is no less than the minimum required receiver power for error-free operation of the communication link.
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公开(公告)号：US20220345223A1
公开(公告)日：2022-10-27
申请号：US17765513
申请日：2020-09-02
申请人： NEC Corporation
发明人： Takeshi TAKEUCHI , Satoshi MIKAMI
IPC分类号： H04B10/291 , H04B10/61 , H04B10/25
摘要： An object is to provide an optical repeater that improves the fault tolerance of a plurality of excitation light sources while sharing the excitation light sources among a plurality of optical fibers. An optical repeater (100) includes excitation light sources (S1-S5), optical amplification units (A1-A5), and an optical distribution unit (10). The optical amplification units (A1-A5) amplify optical signals by using lights output from the excitation light sources (S1-S5). The optical distribution unit (10) includes a plurality of optical multiplexing/demultiplexing units. The optical distribution unit (10) is configured in such a manner that the lights from the four different excitation light sources in the excitation light sources (S1-S5) to be input to each of the light amplification units (A1-A5).
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公开(公告)号：US11438071B2
公开(公告)日：2022-09-06
申请号：US17311082
申请日：2019-12-03
发明人： Hirotaka Ono , Koki Shibahara , Takayuki Mizuno , Yutaka Miyamoto
IPC分类号： H04B10/291 , H04B10/2581 , H04J14/04
摘要： An optical repeater in a mode-division-multiplexing (MDM) optical transmission system prevents a signal-to-noise ratio (SNR) from deteriorating due to a loss of a mode demultiplexer. The optical repeater in the MDM optical transmission system is configured to include at least one multimode optical amplifier, a mode demultiplexer, a mode multiplexer, and variable optical attenuators. One of the multimode optical amplifiers is disposed on the input side of the mode demultiplexer.
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公开(公告)号：US11362753B2
公开(公告)日：2022-06-14
申请号：US16967674
申请日：2019-02-01
IPC分类号： H04J14/00 , H04J14/02 , H01S3/094 , H04B10/27 , H04B10/291
摘要： An optical node device includes one or more input-side wavelength selection switches, a plurality of output-side wavelength selection switches, and an amplification unit. The input-side wavelength selection switches include a plurality of output ports, separate input light in accordance with a wavelength, and output the separated light from the output port corresponding to an output destination of the separated light. The output-side wavelength selection switches include input ports each receiving the light output from each of the one or more input-side wavelength selection switches, multiplex the light received from the input ports, and output the light. The amplification unit amplifies the light output from each of the output ports of the input-side wavelength selection switches and outputs the amplified light to the output-side wavelength selection switch at the output destination corresponding to the output port.
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