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公开(公告)号：US09866320B2
公开(公告)日：2018-01-09
申请号：US14984173
申请日：2015-12-30
Applicant: Facebook, Inc.
Inventor： Shih-Cheng Wang
IPC: H04B10/112 , H04J14/02 , H04B10/50 , H04L7/033
CPC classification number: H04B10/112 , H04B10/1121 , H04B10/1129 , H04B10/501 , H04J14/02 , H04L1/00 , H04L1/06 , H04L7/0331
Abstract: Optical communication systems and methods using coherently combined optical beams are disclosed. A representative system includes a first data source for sending first data at a first frequency of a first optical beam to a first aperture, and at a second frequency of a second optical beam to a second aperture. The system further includes a second data source for sending second data at a third frequency of a third optical beam to the first aperture, and at a fourth frequency of a fourth optical beam to the second aperture. The system also includes a first interleaver of the first aperture configured to interleave the first data at the first frequency and the second data at the third frequency; and a second interleaver of the second aperture configured to interleave the first data at the second frequency and the second data at fourth frequency.
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公开(公告)号：US11060906B1
公开(公告)日：2021-07-13
申请号：US15844305
申请日：2017-12-15
Applicant: Facebook, Inc.
Inventor： Shih-Cheng Wang
Abstract: In one embodiment, a method includes receiving, at an input of a transimpedance amplifier, an input electrical-current signal. The electrical-current signal includes a photodetector current and a DC cancellation current. The photodetector current corresponds to an input optical signal and includes an alternating-current (AC) portion and a direct-current (DC) portion. The method also includes performing, by the transimpedance amplifier, a transimpedance amplification of the input electrical-current signal to produce, at an output of the transimpedance amplifier, an output voltage signal corresponding to the input electrical-current signal. The method further includes providing, by a current-control circuit coupled to the input and the output of the transimpedance amplifier, the DC cancellation current to the input of the transimpedance amplifier, where the DC cancellation current is based on the output voltage signal.
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公开(公告)号：US20180102844A1
公开(公告)日：2018-04-12
申请号：US15828338
申请日：2017-11-30
Applicant: Facebook, Inc.
Inventor： Shih-Cheng Wang
IPC: H04B10/112 , H04B10/50 , H04J14/02 , H04L7/033
CPC classification number: H04B10/112 , H04B10/1121 , H04B10/1129 , H04B10/501 , H04B10/66 , H04J14/02 , H04L1/00 , H04L1/06 , H04L7/0331
Abstract: Optical communication systems and methods using coherently combined optical beams are disclosed. A representative system includes a first data source for sending first data at a first frequency of a first optical beam to a first aperture, and at a second frequency of a second optical beam to a second aperture. The system further includes a second data source for sending second data at a third frequency of a third optical beam to the first aperture, and at a fourth frequency of a fourth optical beam to the second aperture. The system also includes a first interleaver of the first aperture configured to interleave the first data at the first frequency and the second data at the third frequency; and a second interleaver of the second aperture configured to interleave the first data at the second frequency and the second data at fourth frequency.
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公开(公告)号：US09749044B1
公开(公告)日：2017-08-29
申请号：US15090786
申请日：2016-04-05
Applicant: Facebook, Inc.
Inventor： Tobias Gerard Tiecke , Kevin Jerome Quirk , Thibault Michel Max Peyronel , Shih-Cheng Wang
CPC classification number: H04B10/11 , G01N21/64 , G01N2021/6497 , H04B10/112 , H04B10/25 , H04B10/66
Abstract: In one embodiment, an apparatus includes a wavelength-shifting element configured to receive an input-light signal. The wavelength-shifting element includes a wavelength-shifting material configured to absorb at least a portion of the received input-light signal and produce an emitted-light signal from the absorbed portion of the received input-light signal. The apparatus also includes an optical-concentrating element configured to receive at least a portion of the emitted-light signal and concentrate the received portion of the emitted-light signal onto a photodetector. The apparatus further includes the photodetector configured to receive the concentrated portion of the emitted-light signal and produce an electrical current corresponding to the concentrated portion of the emitted-light signal.
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公开(公告)号：US10855370B2
公开(公告)日：2020-12-01
申请号：US16588825
申请日：2019-09-30
Applicant: Facebook, Inc.
Inventor： Tobias Gerard Tiecke , Kevin Jerome Quirk , Thibault Michel Max Peyronel , Shih-Cheng Wang
Abstract: In one embodiment, an apparatus includes a photoluminescent wavelength-shifting material configured to receive an input-light data signal comprising a first range of wavelengths, absorb at least a portion of the received input-light data signal, and produce an emitted-light data signal comprising a second range of wavelengths based on an upper-state lifetime of the photoluminescent wavelength-shifting material. The apparatus also includes a focusing element configured to receive at least a portion of the emitted-light data signal, concentrate the received portion of the emitted-light data signal, and produce a concentrated-light data signal. The apparatus further includes a photodetector configured to receive the concentrated-light data signal, and produce an electrical current corresponding to the concentrated-light data signal.
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Patent Agency Ranking
公开(公告)号：US20200036442A1
公开(公告)日：2020-01-30
申请号：US16588825
申请日：2019-09-30
Applicant: Facebook, Inc.
Inventor： Tobias Gerard Tiecke , Kevin Jerome Quirk , Thibault Michel Max Peyronel , Shih-Cheng Wang
IPC: H04B10/11 , H04B10/25 , H04B10/66 , H04B10/112 , G01N21/64
Abstract: In one embodiment, an apparatus includes a photoluminescent wavelength-shifting material configured to receive an input-light data signal comprising a first range of wavelengths, absorb at least a portion of the received input-light data signal, and produce an emitted-light data signal comprising a second range of wavelengths based on an upper-state lifetime of the photoluminescent wavelength-shifting material. The apparatus also includes a focusing element configured to receive at least a portion of the emitted-light data signal, concentrate the received portion of the emitted-light data signal, and produce a concentrated-light data signal. The apparatus further includes a photodetector configured to receive the concentrated-light data signal, and produce an electrical current corresponding to the concentrated-light data signal.
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公开(公告)号：US20170346556A1
公开(公告)日：2017-11-30
申请号：US15662568
申请日：2017-07-28
Applicant: Facebook, Inc.
Inventor： Tobias Gerard Tiecke , Kevin Jerome Quirk , Thibault Michel Max Peyronel , Shih-Cheng Wang
Abstract: In one embodiment, an apparatus includes a wavelength-shifting element configured to receive an input-light signal. The wavelength-shifting element includes a wavelength-shifting material configured to absorb at least a portion of the received input-light signal and produce an emitted-light signal from the absorbed portion of the received input-light signal. The apparatus also includes a plasmonic grating comprising a plurality of plasmonic-grating elements configured to receive at least a portion of the emitted-light signal and direct the received portion of the emitted-light signal onto a photodetector. The apparatus further includes the photodetector configured to receive the directed portion of the emitted-light signal and produce an electrical current corresponding to the directed portion of the emitted-light signal.
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公开(公告)号：US10511383B2
公开(公告)日：2019-12-17
申请号：US15662568
申请日：2017-07-28
Applicant: Facebook, Inc.
Inventor： Tobias Gerard Tiecke , Kevin Jerome Quirk , Thibault Michel Max Peyronel , Shih-Cheng Wang
Abstract: In one embodiment, an apparatus includes a wavelength-shifting element configured to receive an input-light signal. The wavelength-shifting element includes a wavelength-shifting material configured to absorb at least a portion of the received input-light signal and produce an emitted-light signal from the absorbed portion of the received input-light signal. The apparatus also includes a plasmonic grating comprising a plurality of plasmonic-grating elements configured to receive at least a portion of the emitted-light signal and direct the received portion of the emitted-light signal onto a photodetector. The apparatus further includes the photodetector configured to receive the directed portion of the emitted-light signal and produce an electrical current corresponding to the directed portion of the emitted-light signal.
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公开(公告)号：US10355780B2
公开(公告)日：2019-07-16
申请号：US15828338
申请日：2017-11-30
Applicant: Facebook, Inc.
Inventor： Shih-Cheng Wang
Abstract: Optical communication systems and methods using coherently combined optical beams are disclosed. A representative system includes a first data source for sending first data at a first frequency of a first optical beam to a first aperture, and at a second frequency of a second optical beam to a second aperture. The system further includes a second data source for sending second data at a third frequency of a third optical beam to the first aperture, and at a fourth frequency of a fourth optical beam to the second aperture. The system also includes a first interleaver of the first aperture configured to interleave the first data at the first frequency and the second data at the third frequency; and a second interleaver of the second aperture configured to interleave the first data at the second frequency and the second data at fourth frequency.
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公开(公告)号：US20170195061A1
公开(公告)日：2017-07-06
申请号：US14984173
申请日：2015-12-30
Applicant: Facebook, Inc.
Inventor： Shih-Cheng Wang
CPC classification number: H04B10/112 , H04B10/1121 , H04B10/1129 , H04B10/501 , H04J14/02 , H04L1/00 , H04L1/06 , H04L7/0331
Abstract: Optical communication systems and methods using coherently combined optical beams are disclosed. A representative system includes a first data source for sending first data at a first frequency of a first optical beam to a first aperture, and at a second frequency of a second optical beam to a second aperture. The system further includes a second data source for sending second data at a third frequency of a third optical beam to the first aperture, and at a fourth frequency of a fourth optical beam to the second aperture. The system also includes a first interleaver of the first aperture configured to interleave the first data at the first frequency and the second data at the third frequency; and a second interleaver of the second aperture configured to interleave the first data at the second frequency and the second data at fourth frequency.
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