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1. 发明授权

EP3783815B1 AMCC DEVICE AND TRANSMISSION WAVELENGTH ADJUSTMENT AND CONTROL METHOD 有权
公开(公告)号：EP3783815B1
公开(公告)日：2024-04-03
申请号：EP19788851.4
申请日：2019-04-04
发明人： YANG, Wei , TIAN, Hongliang , CHEN, Aimin , YANG, Bo
IPC分类号： H04B10/294 , H04J14/02 , H04B10/572 , H04B10/079

2. 发明公开

EP4325744A1 OPTICAL POWER ADJUSTMENT SYSTEM AND OPTICAL POWER ADJUSTMENT DEVICE 审中-实审
公开(公告)号：EP4325744A1
公开(公告)日：2024-02-21
申请号：EP22794607.6
申请日：2022-04-14
申请人： Huawei Technologies Co., Ltd.
发明人： HUANG, Linbojie , PAN, Chao , ZHANG, Kai
IPC分类号： H04B10/294 , H04B10/2581
摘要： Embodiments of this application provide an optical power adjustment system and an optical power adjustment apparatus. The optical power adjustment system includes a multi-mode light source, a mode demultiplexer, and an optical power adjustment apparatus. The multi-mode light source is configured to output a multi-mode optical signal, where the multi-mode optical signal includes N transverse-mode optical signals, N=2 M , and M is an integer greater than 1. The mode demultiplexer is configured to convert the N transverse-mode optical signals into N fundamental-mode optical signals, and output the N fundamental-mode optical signals. The optical power adjustment apparatus includes M optical power adjustment modules and a control apparatus, each optical power adjustment module includes a plurality of phase shifters, and the control apparatus is electrically connected to the M optical power adjustment modules. A K th optical power adjustment module includes 2 K-1 multi-mode interferometers MMIs, and an I th input port or a (2 M-K+1 -I+1) th input port of each MMI is connected to one phase shifter. The control apparatus is configured to adjust the phase shifters in the K th optical power adjustment module, to enable output optical power of an I th output port to be the same as output optical power of a (2 M-K+1 -I+1) th output port.

3. 发明公开

EP4241396A1 GAIN EQUALIZATION ERROR MANAGEMENT IN OPTICAL COMMUNICATION SYSTEMS 审中-实审
公开(公告)号：EP4241396A1
公开(公告)日：2023-09-13
申请号：EP21889783.3
申请日：2021-09-08
申请人： SubCom, LLC
发明人： FOURSA, Dmitri, G. , HAMMON, Timothy, E.
IPC分类号： H04B10/25 , H04B10/29 , H04B10/294 , H04B10/299

4. 发明授权

EP3767847B1 OPTICAL TRANSMISSION DEVICE AND OPTICAL TRANSMISSION METHOD 有权转让
公开(公告)号：EP3767847B1
公开(公告)日：2023-06-21
申请号：EP19766493.1
申请日：2019-03-11
发明人： AIDA Ryuji
IPC分类号： H04B10/077 , H04Q11/00 , H04J14/02 , H04B10/294

5. 发明公开

EP4145731A1 FILTER, OPTICAL AMPLIFIER, COMMUNICATION SYSTEM, FILTERING METHOD AND OPTICAL AMPLIFICATION METHOD 审中-实审
公开(公告)号：EP4145731A1
公开(公告)日：2023-03-08
申请号：EP21809674.1
申请日：2021-01-18
申请人： Huawei Technologies Co., Ltd.
发明人： GUO, Qiang , OUYANG, Kui , LIU, Minghui , CAO, Shiyi
IPC分类号： H04J14/02 , H04B10/294
摘要： A filter, an optical amplifier, a communication system, a filtering method, an optical amplification method, and a storage medium are provided. The filter includes a first filter component (112a) and a second filter component (112b) that are coupled. The first filter component (112a) 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 (112b) is loaded with a first driving electrical signal, the first driving electrical signal is used to control a frequency response of the second filter component (112b), and the second filter component (112b) is configured to filter, by 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 (112a), where the second power difference includes a difference caused by a stimulated Raman scattering effect. The filter ensures signal quality of the transmitted optical signal.

6. 发明公开

EP4138316A1 SEMICONDUCTOR BASED SYSTEM AND METHOD FOR BROAD BANDWIDTH TRANSMISSION 审中-实审
公开(公告)号：EP4138316A1
公开(公告)日：2023-02-22
申请号：EP22186772.4
申请日：2022-07-25
申请人： SubCom, LLC
发明人： Foursa, Dmitri G. , Pilipetskii, Alexei N.
IPC分类号： H04B10/291 , H01S3/067 , H01S5/50 , H04B10/294 , H04J14/02
摘要： Disclosed are techniques and amplifier stages that include wave division multiplexers, semiconductor optical amplifiers and wave division demultiplexers that amplify optical signals. An input optical signal having a first bandwidth is partitioned into a plurality of subband optical signals by thin film filters tuned to a selected bandwidth that is less than the first bandwidth. Each of the plurality of subband optical signals has a bandwidth that is a portion of the first bandwidth. Each subband optical signal is input into a semiconductor optical amplifier that is tuned to the respective portion of the first bandwidth that corresponds to the subband optical signal. The combination of the partitioned input optical signal and tuned semiconductor optical amplifiers provides improved optical signal transmission performance by reducing polarization dependent gain.

7. 发明公开

EP3767847A1 OPTICAL TRANSMISSION DEVICE AND OPTICAL TRANSMISSION METHOD 有权转让
公开(公告)号：EP3767847A1
公开(公告)日：2021-01-20
申请号：EP19766493.1
申请日：2019-03-11
申请人： NEC Corporation
发明人： AIDA Ryuji
IPC分类号： H04J14/02 , H04B10/294
摘要： In order to provide an optical transmission device capable of implementing the spectral control of WDM signals while taking into account optical component characteristics, an optical transmission device is provided with: a WSS; a wavelength monitor that outputs a signal expressing a first spectrum, which is the spectrum of the WSS optical output; an optical processing unit that subjects the WSS optical output to prescribed processing; a temperature monitor that outputs a signal indicating the temperature of an optical processing means; and a control unit that receives the input of the signal expressing the first spectrum and the signal indicating the temperature, and controls the transmission characteristics of the WSS on the basis of the first spectrum and the temperature.

8. 发明授权

EP2682813B1 OPTICAL AMPLIFIER, OPTICAL AMPLIFYING SYSTEM, WAVELENGTH CONVERTER, OPTICAL AMPLIFICATION METHOD, AND OPTICAL COMMUNICATION SYSTEM 有权
公开(公告)号：EP2682813B1
公开(公告)日：2020-11-18
申请号：EP12754607.5
申请日：2012-03-05
申请人： Furukawa Electric Co., Ltd.
发明人： TAKASAKA, Shigehiro , MIMURA, Yu
IPC分类号： G02F1/39 , G02F1/35 , H04B10/294 , H01S3/067 , H01S3/30

9. 发明公开

EP3614581A1 BIDIRECTIONAL OPTICAL TRANSMISSION SYSTEM AND BIDIRECTIONAL OPTICAL TRANSMISSION METHOD 审中-公开
公开(公告)号：EP3614581A1
公开(公告)日：2020-02-26
申请号：EP18787768.3
申请日：2018-04-03
申请人： NEC Corporation
发明人： NAKAMURA Kohei
IPC分类号： H04B10/297 , H04B10/294 , H04J14/02
摘要： A bidirectional optical transmission system includes a first optical transmission line including a first repeater (30A), a second optical transmission line including a second repeater (30B), and C+L band transmitting/receiving devices (10, 20) connected to each other through these transmission lines so that they can communicate with each other. The C+L band transmitting/receiving device (10) transmits an optical signal in a C-band to the first optical transmission line and transmits an optical signal in an L-band to the second optical transmission line, and the C+L band transmitting/receiving device (20) transmits an optical signal in the C-band to the second optical transmission line and transmits an optical signal in the L-band to the first optical transmission line. The first repeater (30A) separates the optical signal in the C-band and the optical signal in the L-band bidirectionally propagating through the first optical transmission line from each other, and separately amplifies the separated optical signals, and the second repeater (30B) separates the optical signal in the C-band and the optical signal in the L-band bidirectionally propagating through the second optical transmission line from each other, and separately amplifies the separated optical signals. In this way, it is possible to expand a transmission capacity and alleviate deterioration in a transmission characteristic.

10. 发明授权

EP2007041B1 Optical amplifier 有权
公开(公告)号：EP2007041B1
公开(公告)日：2018-01-24
申请号：EP08011071.1
申请日：2008-06-18
申请人： Fujitsu Limited
发明人： Tsuzuki, Tatsuya , Shukunami, Norifumi , Tamura, Yuji , Shimano, Yoshio , Nakata, Masao , Satou, Takashi
IPC分类号： H04B10/294 , H01S3/13 , H01S3/067
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S2301/04
摘要： According to an aspect of the embodiment of the invention, an optical amplifier including an input port, an output port, a plurality of amplifying parts, an optical attenuator, a gain controller and an optical attenuator controller. The plurality of amplifying parts includes an optical amplification medium and a pumping light source for generating pump light. The optical attenuator is optically connected between the amplifying parts. The gain controller controls the pump light power of the pump sources, respectively, in such a way that the ratio decreases in accordance with the gain set value increasing and the ratio interpose between a first threshold level and a second threshold level. The optical attenuator controller controls attenuation of the optical attenuator in order to maintain the sum of generating gains of the amplifying parts in the gain set value in accordance with a state of the signal light inputted into the input port.

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