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公开(公告)号：US11950031B2
公开(公告)日：2024-04-02
申请号：US17479925
申请日：2021-09-20
Applicant: Infinera Corporation
Inventor： Syed Muhammad Bilal , Christopher Fludger , Scott Pringle , Mehdi Karimi , William Isaac
CPC classification number: H04Q11/0005 , H04W56/0005 , H04W56/0015 , H04Q2011/0045 , H04Q2011/005
Abstract: Systems and methods for performing impairment compensation in point-to-multi-point communication systems are described. In a data snapshot mode, a hub node can send instructions to each communication node connected to the hub node to send a data snapshot of data being received and processed by the communication nodes at a particular time. In a trench line mode, a hub node sends instructions to each communication node to send trench line data back to the hub node. The hub node uses the data snapshot or trench line data to determine how to tune filter coefficients in the hub node to perform impairment compensation and improve performance of the communication system.
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公开(公告)号：US20220158750A1
公开(公告)日：2022-05-19
申请号：US17527137
申请日：2021-11-15
Applicant: Infinera Corporation
Inventor： Christopher Fludger , Syed Muhammad Bilal , Demin Yao , Xiang Chen , Han Henry Sun , Byungyoon Min , Isaac William , Liu Zihao , Yuanqing Li
Abstract: Techniques are described for implementing an out-of-band communication channel used to exchange control channel information in sub-carrier-based optical communication systems. In an example implementation, a transmitter includes a laser operable to supply an optical signal, a digital signal processor operable to supply first electrical signals based on first data input to the digital signal processor and second data input to the digital signal processor, digital-to-analog conversion circuitry operable to output second electrical signals based on the first electrical signals, modulator driver circuitry is operable to output third electrical signals based on the second electrical signals, and an optical modulator operable to supply first and second modulated optical signals based on the third electrical signals. The first modulated optical signal includes a plurality of optical subcarriers carrying user data. The plurality of optical subcarriers also being amplitude modulated to carry control information.
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公开(公告)号：US12047163B2
公开(公告)日：2024-07-23
申请号：US17527137
申请日：2021-11-15
Applicant: Infinera Corporation
Inventor： Christopher Fludger , Syed Muhammad Bilal , Demin Yao , Xiang Chen , Han Henry Sun , Byungyoon Min , William Isaac , Zihao Liu , Yuanqing Li
CPC classification number: H04J14/0257 , H04B10/504 , H04B10/54 , H04J14/0272
Abstract: Techniques are described for implementing an out-of-band communication channel used to exchange control channel information in sub-carrier-based optical communication systems. In an example implementation, a transmitter includes a laser operable to supply an optical signal, a digital signal processor operable to supply first electrical signals based on first data input to the digital signal processor and second data input to the digital signal processor, digital-to-analog conversion circuitry operable to output second electrical signals based on the first electrical signals, modulator driver circuitry is operable to output third electrical signals based on the second electrical signals, and an optical modulator operable to supply first and second modulated optical signals based on the third electrical signals. The first modulated optical signal includes a plurality of optical subcarriers carrying user data. The plurality of optical subcarriers also being amplitude modulated to carry control information.
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公开(公告)号：US20220095023A1
公开(公告)日：2022-03-24
申请号：US17479925
申请日：2021-09-20
Applicant: Infinera Corporation
Inventor： Syed Muhammad Bilal , Christopher Fludger , Scott Pringle , Mehdi Karimi , William Isaac
Abstract: Systems and methods for performing impairment compensation in point-to-multi-point communication systems are described. In a data snapshot mode, a hub node can send instructions to each communication node connected to the hub node to send a data snapshot of data being received and processed by the communication nodes at a particular time. In a trench line mode, a hub node sends instructions to each communication node to send trench line data back to the hub node. The hub node uses the data snapshot or trench line data to determine how to tune filter coefficients in the hub node to perform impairment compensation and improve performance of the communication system.
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