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公开(公告)号：US10687126B2
公开(公告)日：2020-06-16
申请号：US16003847
申请日：2018-06-08
Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
Inventor： Nicolas Dupuis , Daniel M. Kuchta , Benjamin G. Lee , Alexander Rylyakov , Clint L. Schow
IPC: H04Q11/00
Abstract: Methods and systems for bias control in an optical switch fabric include monitoring optical power at outputs of a plurality of switch elements in an N×N switch fabric that has N inputs, N outputs, and M≥2 stages, each switch element having a respective unique radio frequency tone. A bias control of each of the plurality of switch elements is adjusted. It is determined whether the optical power at the outputs of each respective switch element after bias control adjustment conform more closely to a predetermined criterion relative to the monitored optical power at the outputs of the respective switch element prior to adjustment.
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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：US20200137467A1
公开(公告)日：2020-04-30
申请号：US16003847
申请日：2018-06-08
Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
Inventor： Nicolas Dupuis , Daniel M. Kuchta , Benjamin G. Lee , Alexander Rylyakov , Clint L. Schow
IPC: H04Q11/00 , H04B10/079
Abstract: Methods and systems for bias control in an optical switch fabric include monitoring optical power at outputs of a plurality of switch elements in an N×N switch fabric that has N inputs, N outputs, and M≥2 stages, each switch element having a respective unique radio frequency tone. A bias control of each of the plurality of switch elements is adjusted. It is determined whether the optical power at the outputs of each respective switch element after bias control adjustment conform more closely to a predetermined criterion relative to the monitored optical power at the outputs of the respective switch element prior to adjustment.
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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：US20180083727A1
公开(公告)日：2018-03-22
申请号：US15267298
申请日：2016-09-16
Applicant: International Business Machines Corporation
Inventor： Alan F. Benner , Douglas M. Freimuth , Benjamin G. Lee , Fabrizio Petrini , Laurent Schares , Clint L. Schow , Mehmet Soyuer
IPC: H04J14/02 , H04Q11/00 , H04L12/927 , H04L12/851
CPC classification number: H04J14/0257 , H04J14/0256 , H04J14/0272 , H04L47/2441 , H04L47/805 , H04Q11/0071 , H04Q2011/0016 , H04Q2011/0086
Abstract: A communication system includes first and second devices. The first device includes a first transmitter and a first receiver. The first transmitter transmits one data of a first type using one or more first channels over a first communication link to the second device. The first receiver receives one data of a second type, from the second device, using one or more second channels over the first communication link. The second device includes a second transmitter and a second receiver. The second receiver receives said one data of the first type using the one or more first channels over the first communication link, and to generate said one data of the second type based on said one data of the first type. The second transmitter transmits said one data of the second type using one or more second channels over the first communication link to the first device.
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Patent Agency Ranking
6.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：US20170261704A1
公开(公告)日：2017-09-14
申请号：US15606282
申请日：2017-05-26
Applicant: International Business Machines Corporation
Inventor： Fuad Doany , Benjamin G. Lee , Clint L. Schow
CPC classification number: G02B6/34 , G02B6/12 , G02B6/12002 , G02B6/12004 , G02B6/124 , G02B6/13 , G02B6/136 , G02B6/29323 , G02B6/30 , G02B6/305 , G02B6/32 , G02B6/3652 , G02B6/4214 , G02B6/43 , G02B2006/12104 , H01L25/167 , H01L2924/0002 , H01L2924/00
Abstract: An optoelectronic integrated circuit for coupling light to or from an optical waveguide formed in an optical device layer in a near-normal angle to that layer. In an embodiment, the integrated circuit comprises a semiconductor body including a metal-dielectric stack, an optical device layer, a buried oxide layer and a semiconductor substrate arranged in series between first and second opposite sides of the semiconductor body. At least one optical waveguide is formed in the optical device layer for guiding light in a defined plane in that device layer. Diffractive coupling elements are disposed in the optical device layer to couple light from the waveguide toward the second surface of the semiconductor body at a near-normal angle to the defined plane in the optical device layer. In an embodiment, an optical fiber is positioned against the semiconductor body for receiving the light from the coupling elements.
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公开(公告)号：US20170199330A1
公开(公告)日：2017-07-13
申请号：US14950359
申请日：2015-11-24
Applicant: International Business Machines Corporation
Inventor： Fuad E. Doany , Nicolas Dupuis , Benjamin G. Lee , Frank R. Libsch , Jeonghwan Song
CPC classification number: G02B6/126 , G02B6/1221 , G02B6/1228 , G02B6/125 , G02B6/2726 , G02B6/2766 , G02B27/0012
Abstract: A photonic waveguide structure for performing polarization rotation includes a first waveguide layer including input and output waveguides. The input and output waveguides are separate and discontinuous structures. The input and output waveguides are configured in the first waveguide layer to have a lateral offset therebetween. The photonic waveguide structure further includes a second waveguide layer including a waveguide structure disposed under or over the first waveguide layer. The waveguide structure includes a polarization conversion region configured within the second waveguide layer to overlap the input or output waveguides in the first waveguide layer.
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9.发明授权公开(公告)号：US09608761B2
公开(公告)日：2017-03-28
申请号：US14744259
申请日：2015-06-19
Applicant: International Business Machines Corporation
Inventor： Fuad E. Doany , Daniel M. Kuchta , Benjamin G. Lee , Petar K. Pepeljugoski , Clint L. Schow , Mehmet Soyuer
IPC: H04J14/02 , H04B10/2581 , H04B10/079
CPC classification number: H04J14/0241 , H04B10/07957 , H04B10/2581 , H04J14/02
Abstract: Tuning parameters of individual wavelength channels transmitted over a multimode optical fiber is provided. Characteristics of the multimode optical fiber used for an optical data link within an optical signal transmission system are retrieved. A wavelength channel grid including each central wavelength in a plurality of central wavelengths that corresponds to each particular wavelength channel in a plurality of wavelength channels used to transmit data via optical signals over the multimode optical fiber is determined. A maximum allowable data rate is calculated for each wavelength channel based on the characteristics of the multimode optical fiber at defined channel wavelengths, optical signal transceiver specifications, and data transmission performance requirements for the optical signal transmission system. Operational parameters are assigned to each wavelength channel based on the calculated maximum allowable data rate for each wavelength channel to achieve the data transmission performance requirements for the optical signal transmission system.
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公开(公告)号：US20160195678A1
公开(公告)日：2016-07-07
申请号：US15069532
申请日：2016-03-14
Applicant: International Business Machines Corporation
Inventor： Fuad Doany , Benjamin G. Lee , Clint L. Schow
CPC classification number: G02B6/34 , G02B6/12 , G02B6/12002 , G02B6/12004 , G02B6/124 , G02B6/13 , G02B6/136 , G02B6/29323 , G02B6/30 , G02B6/305 , G02B6/32 , G02B6/3652 , G02B6/4214 , G02B6/43 , G02B2006/12104 , H01L25/167 , H01L2924/0002 , H01L2924/00
Abstract: An optoelectronic integrated circuit for coupling light to or from an optical waveguide formed in an optical device layer in a near-normal angle to that layer. In an embodiment, the integrated circuit comprises a semiconductor body including a metal-dielectric stack, an optical device layer, a buried oxide layer and a semiconductor substrate arranged in series between first and second opposite sides of the semiconductor body. At least one optical waveguide is formed in the optical device layer for guiding light in a defined plane in that device layer. Diffractive coupling elements are disposed in the optical device layer to couple light from the waveguide toward the second surface of the semiconductor body at a near-normal angle to the defined plane in the optical device layer. In an embodiment, an optical fiber is positioned against the semiconductor body for receiving the light from the coupling elements.
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