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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
申请人： Infinera Corporation
发明人： Christopher Fludger , Syed Muhammad Bilal , Demin Yao , Xiang Chen , Han Henry Sun , Byungyoon Min , William Isaac , Zihao Liu , Yuanqing Li
CPC分类号： H04J14/0257 , H04B10/504 , H04B10/54 , H04J14/0272
摘要： 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：US20230125343A1
公开(公告)日：2023-04-27
申请号：US17973243
申请日：2022-10-25
申请人： Infinera Corporation
发明人： Francisco Javier Vaquero Caballero , Mehdi Torbatian , Demin Yao , Han Henry Sun , Jonathan Buset , Kuang-Tsan Wu
摘要： Methods, systems, and apparatus, including computer programs encoded on computer storage media, for performing asymmetric pulse-shaping filtering. In some implementations, a receiver comprises a detector circuit operable to receive optical signal data from an optical link. The receiver comprises a filter circuit, coupled to the detector circuit, operable to (i) filter the optical signal data according to an asymmetric filtering scheme and (ii) output the filtered optical signal data, wherein the asymmetric filtering scheme comprises utilizing a shaping filter with first criteria, the first criteria including one or more values greater than one or more values of second criteria utilized by a shaping filter at a transmitter, the transmitter communicating with the receiver.
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公开(公告)号：US20230085546A1
公开(公告)日：2023-03-16
申请号：US17944812
申请日：2022-09-14
申请人： Infinera Corporation
发明人： Mohamed Osman , Demin Yao , Domanic Lavery , Han Henry Sun , Pierre Mertz
摘要： Methods, systems, and apparatus, including computer programs encoded on computer storage media, for applying non-linearity to digital subcarriers. A receiver includes a detector circuit operable to receive a first optical signal over an optical link, the first optical signal carrying first data. The receiver includes a carrier recovery estimation circuit operable to generate compensated data by correcting errors in the first data. The receiver includes a non-linear coefficient estimation circuit operable to (i) receive the compensated data, and (ii) estimate one or more non-linear coefficients, wherein information indicative of the estimated non-linear coefficients is transmitted over an optical network, such that a second optical signal is transmitted based, at least in part, on the estimated non-linear coefficients, the second optical signal being received by the receiver.
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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
申请人： Infinera Corporation
发明人： Christopher Fludger , Syed Muhammad Bilal , Demin Yao , Xiang Chen , Han Henry Sun , Byungyoon Min , Isaac William , Liu Zihao , Yuanqing Li
摘要： 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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