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公开(公告)号：US11953803B2
公开(公告)日：2024-04-09
申请号：US17681097
申请日：2022-02-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zeshan Chang , Lei Mao , Liangjia Zong , Tong Li , Hong Yang
CPC classification number: G02F1/31 , G09G3/3611 , G09G3/3659 , G02F2202/10
Abstract: Embodiments of the present application provide a method for controlling voltages of a liquid crystal on silicon (LCoS) two-dimensional array which includes a plurality of pixel sets, and the plurality of pixel sets include a first pixel set and a second pixel set. The method includes: determining a plurality of bit sequences, where the plurality of bit sequences include a first bit sequence and a second bit sequence; controlling a voltage of the first pixel set by using the first bit sequence; and controlling a voltage of the second pixel set by using the second bit sequence, where the first pixel set and the second pixel set are in different phase cycles in a port direction of the LCoS two-dimensional array, the first pixel set and the second pixel set have a same phase, and duty ratios of the first bit sequence and the second bit sequence are the same.
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公开(公告)号：US20170373748A1
公开(公告)日：2017-12-28
申请号：US15200325
申请日：2016-07-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhiping Jiang , Tejia Liu , Hong Yang , Dajiang Jin , Minggang Si
IPC: H04B10/077
Abstract: The disclosure is directed at a method and system for optical telecommunications performance monitoring via a dual frequency pilot tone. By applying a dual frequency pilot tone, with a first pilot tone frequency selected from a low frequency band and a second pilot tone frequency selected from a high frequency band, either simultaneously or alternatively, to a wavelength channel, one of the pilot tone frequencies may be adaptively selected to improve wavelength channel monitoring. More specifically, stimulated Raman scattering (SRS) caused crosstalk and chromatic dispersion (CD) caused pilot fading which adversely affect performance monitoring of the wavelength channel may be reduced.
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公开(公告)号：US11611816B2
公开(公告)日：2023-03-21
申请号：US17333177
申请日：2021-05-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Junling Xiang , Hong Yang , Tianhai Chang
Abstract: This application discloses a service data processing method and device. A transmit-end device may generate an optical transport network (OTN) encapsulated signal carrying service data, and generate at least n FlexO (flexible optical transport network) frames based on the OTN encapsulated signal and send the at least n FlexO frames, where r FlexO frames in the at least n FlexO frames carry service check data, and the service check data may be used to restore the service data when bit error rates of k FlexO frames are greater than a reference bit error rate. In this way, if no more than r physical ports included in a FlexO group interface fail, or a bit error rate of no more than r FlexO frames is greater than the reference bit error rate due to another reason, a receive-end device may restore the service data through a received FlexO frame.
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公开(公告)号：US10432303B2
公开(公告)日：2019-10-01
申请号：US15200325
申请日：2016-07-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhiping Jiang , Tejia Liu , Hong Yang , Dajiang Jin , Minggang Si
IPC: H04B10/08 , H04B10/077 , H04J14/02
Abstract: The disclosure is directed at a method and system for optical telecommunications performance monitoring via a dual frequency pilot tone. By applying a dual frequency pilot tone, with a first pilot tone frequency selected from a low frequency band and a second pilot tone frequency selected from a high frequency band, either simultaneously or alternatively, to a wavelength channel, one of the pilot tone frequencies may be adaptively selected to improve wavelength channel monitoring. More specifically, stimulated Raman scattering (SRS) caused crosstalk and chromatic dispersion (CD) caused pilot fading which adversely affect performance monitoring of the wavelength channel may be reduced.
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