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公开(公告)号：US20200145739A1
公开(公告)日：2020-05-07
申请号：US16406452
申请日：2019-05-08
Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
Inventor： Nicolas Dupuis , Benjamin G. Lee , Alexander V. Rylyakov , Mehmet Soyuer
Abstract: Optical switches include a phase shifter on a first branch, a first heater on the first branch, and a second heater on a second branch. A hybrid coupler combines the first branch and the second branch. A first photodetector and a second photodetector are at outputs of the second hybrid coupler to measure crosstalk between the outputs of the second hybrid coupler. A controller is configured to activate the first heater or the second heater to reduce the measured crosstalk.
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公开(公告)号：US10120210B2
公开(公告)日：2018-11-06
申请号：US15385409
申请日：2016-12-20
Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
Inventor： Nicolas Dupuis , Tam N. Huynh , Benjamin G. Lee , Jonathan E. Proesel , Renato Rimolo-Donadio , Alexander V. Rylyakov , Clint L. Schow
IPC: H04B10/50 , G02F1/01 , H04B10/516 , G02F1/225 , G02F1/21
Abstract: A device and method of optical equalization using an optical modulator is provided. An electrical modulation signal is split into a first modulation signal and a second modulation signal. The second modulation signal is delayed relative to the first modulation signal. An amplitude of the second modulation signal is attenuated relative to the first modulation signal. The first modulation signal is applied to a first waveguide segment of the optical modulator. The second modulation signal that is delayed and attenuated relative to the first modulation signal is applied to a second waveguide segment of the optical modulator. Both the applied first and second modulation signals generate a feed-forward equalized optical signal that is recombined in the optical domain.
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公开(公告)号：US09954486B2
公开(公告)日：2018-04-24
申请号：US15013649
申请日：2016-02-02
Applicant: International Business Machines Corporation
Inventor： Herschel A. Ainspan , Mark A. Ferriss , Daniel J. Friedman , Alexander V. Rylyakov , Bodhisatwa Sadhu , Alberto Valdes-Garcia
IPC: H03B5/08 , H03B5/12 , H03K3/354 , H03K5/04 , H03L7/199 , H03L7/089 , H03B1/00 , H03H11/04 , H03L7/093 , H03L7/099 , H03L7/10 , H03H19/00 , H03L7/18
CPC classification number: H03B5/1228 , H03B1/00 , H03B5/1212 , H03B5/1215 , H03B5/124 , H03B5/1243 , H03B5/1265 , H03H11/04 , H03H19/006 , H03J2200/10 , H03K3/354 , H03K5/04 , H03L7/0898 , H03L7/093 , H03L7/099 , H03L7/0992 , H03L7/10 , H03L7/18 , H03L7/199 , H03L2207/06
Abstract: An apparatus comprises a digitally controlled circuit having a variable capacitance and a controller configured to adjust a magnitude of the variable capacitance of the digitally controlled circuit. The digitally controlled circuit comprises a plurality of gain elements, the plurality of gain elements comprising one or more positive voltage-to-frequency gain elements and one or more negative voltage-to-frequency gain elements. The controller is configured to adjust the magnitude of the capacitance by adjusting the gain provided by respective ones of the gain elements in an alternating sequence of the positive voltage-to-frequency gain elements and the negative voltage-to-frequency gain elements.
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4.发明申请公开(公告)号：US20170351122A1
公开(公告)日：2017-12-07
申请号：US15385409
申请日：2016-12-20
Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
Inventor： Nicolas Dupuis , Tam N. Huynh , Benjamin G. Lee , Jonathan E. Proesel , Renato Rimolo-Donadio , Alexander V. Rylyakov , Clint L. Schow
IPC: G02F1/01 , G02F1/225 , H04B10/516 , G02F1/21
CPC classification number: G02F1/0121 , G02F1/2257 , G02F2001/212 , H04B10/516
Abstract: A device and method of optical equalization using an optical modulator is provided. An electrical modulation signal is split into a first modulation signal and a second modulation signal. The second modulation signal is delayed relative to the first modulation signal. An amplitude of the second modulation signal is attenuated relative to the first modulation signal. The first modulation signal is applied to a first waveguide segment of the optical modulator. The second modulation signal that is delayed and attenuated relative to the first modulation signal is applied to a second waveguide segment of the optical modulator. Both the applied first and second modulation signals generate a feed-forward equalized optical signal that is recombined in the optical domain.
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公开(公告)号：US20170201215A1
公开(公告)日：2017-07-13
申请号：US14993217
申请日：2016-01-12
Applicant: International Business Machines Corporation
Inventor： Mark A. Ferriss , Daniel J. Friedman , Alexander V. Rylyakov , Bodhisatwa Sadhu , Alberto Valdes Garcia
CPC classification number: H03B5/1265 , H03B5/00 , H03B5/12 , H03B5/1206 , H03H11/0422 , H03H11/0472 , H03H11/46 , H03H19/00 , H03H19/004 , H03L7/093
Abstract: A method includes forming a resonator comprising a plurality of switched impedances spatially distributed within the resonator, selecting a resonant frequency for the resonator, and distributing two or more transconductance elements within the resonator based on the selected resonant frequency. Distributing the two or more transconductance elements may include non-uniformly distributing the two or more transconductance elements within the resonator.
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Patent Agency Ranking
公开(公告)号：US20160049906A1
公开(公告)日：2016-02-18
申请号：US14926290
申请日：2015-10-29
Applicant: International Business Machines Corporation
Inventor： Mark A. Ferriss , Daniel J. Friedman , Alexander V. Rylyakov , Bodhisatwa Sadhu , Alberto Valdes Garcia
CPC classification number: H03B5/1265 , H03B5/00 , H03B5/12 , H03B5/1206 , H03H11/0422 , H03H11/0472 , H03H11/46 , H03H19/00 , H03H19/004 , H03L7/093
Abstract: A method includes forming a resonator comprising a plurality of switched impedances spatially distributed within the resonator, selecting a resonant frequency for the resonator, and distributing two or more transconductance elements within the resonator based on the selected resonant frequency. Distributing the two or more transconductance elements may include non-uniformly distributing the two or more transconductance elements within the resonator.
Abstract translation: 一种方法包括形成谐振器，其包括在谐振器内空间分布的多个开关阻抗，选择谐振器的谐振频率，以及基于所选谐振频率在谐振器内分布两个或更多个跨导元件。 分配两个或更多个跨导元件可以包括在谐振器内非均匀地分布两个或更多个跨导元件。
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公开(公告)号：US09231605B2
公开(公告)日：2016-01-05
申请号：US14498438
申请日：2014-09-26
Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
Inventor： Herschel A. Ainspan , Mark A. Ferriss , Daniel J. Friedman , Alexander V. Rylyakov , Bodhisatwa Sadhu , Alberto Valdes Garcia
CPC classification number: H03L7/1974 , H03L7/081 , H03L7/085 , H03L7/093 , H03L7/099 , H03L7/0992 , H03L7/1976 , H03L2207/06
Abstract: Methods and devices for phase adjustment include a phase detector that is configured to compare a reference clock and a feedback clock and to generate two output signals. A difference in time between pulse widths of the two output signals corresponds to a phase difference between the reference clock and the feedback clock. A programmable delay line is configured to delay an earlier output signal in accordance with a predicted deterministic phase error. An oscillator is configured to generate a feedback signal in accordance with the delayed output signal. A divider is configured to divide a frequency of the oscillator output by an integer N. The integer N is varied to achieve an average fractional divide ratio and the predicted deterministic phase error is based on the average divide ratio and an instantaneous divide ratio.
Abstract translation: 用于相位调整的方法和装置包括相位检测器，其被配置为比较参考时钟和反馈时钟并产生两个输出信号。 两个输出信号的脉冲宽度之间的时间差对应于参考时钟和反馈时钟之间的相位差。 可编程延迟线被配置为根据预测的确定性相位误差来延迟较早的输出信号。 振荡器被配置为根据延迟的输出信号产生反馈信号。 分频器被配置为将振荡器输出的频率除以整数N.整数N被改变以实现平均分数除法比，并且预测的确定性相位误差基于平均分频比和瞬时分频比。
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公开(公告)号：US09225348B2
公开(公告)日：2015-12-29
申请号：US14496643
申请日：2014-09-25
Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
Inventor： Herschel A. Ainspan , Mark A. Ferriss , Daniel J. Friedman , Alexander V. Rylyakov , Bodhisatwa Sadhu , Alberto Valdes Garcia
CPC classification number: H03L7/1974 , H03L7/081 , H03L7/085 , H03L7/093 , H03L7/099 , H03L7/0992 , H03L7/1976 , H03L2207/06
Abstract: Methods and systems for phase correction include determining a phase error direction and generating a prediction for the phase error based on a sigma-delta error. It is determined whether the prediction agrees with the determined phase error direction. If the prediction does not agree, a phase correction is adjusted in accordance with the predicted phase error.
Abstract translation: 用于相位校正的方法和系统包括确定相位误差方向并基于Σ-Δ误差产生相位误差的预测。 确定预测是否与确定的相位误差方向一致。 如果预测不一致，则根据预测的相位误差来调整相位校正。
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公开(公告)号：US20130308900A1
公开(公告)日：2013-11-21
申请号：US13947906
申请日：2013-07-22
Applicant: International Business Machines Corporation
Inventor： Fuad E. Doany , Christopher V. Jahnes , Clint L. Schow , Mehmet Soyuer , Alexander V. Rylyakov
IPC: G02B6/12
CPC classification number: G02B6/12 , G02B6/4232 , G02B6/4246 , G02B6/4249 , G02B6/4259 , G02B6/4267 , H01L27/04 , H01L29/02 , H01L31/0203 , H01L2224/16225 , H01S5/40
Abstract: A silicon-on-insulator wafer is provided. The silicon-on-insulator wafer includes a silicon substrate having optical vias formed therein. In addition, an optically transparent oxide layer is disposed on the silicon substrate and the optically transparent oxide layer is in contact with the optical vias. Then, a complementary metal-oxide-semiconductor layer is formed over the optically transparent oxide layer.
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公开(公告)号：US10349155B2
公开(公告)日：2019-07-09
申请号：US16152907
申请日：2018-10-05
Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
Inventor： Nicolas Dupuis , Benjamin G. Lee , Alexander V. Rylyakov , Mehmet Soyuer
IPC: H04Q11/00 , G02F1/225 , H04B10/079 , H04J14/02 , G02F1/21
Abstract: Optical switches include a first hybrid coupler configured to accept an input and to provide two branches. A phase tuner on a first branch includes a phase shifter. A first heater is positioned on the first branch and a second heater is positioned on the second branch, each configured to compensate for phase error. A second hybrid coupler configured to recombine the two branches. A first photodetector and a second photodetector are positioned at outputs of the second hybrid coupler and are configured to measure crosstalk between the outputs of the second hybrid coupler. A controller is configured to activate the first heater or the second heater to reduce the measured crosstalk.
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