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公开(公告)号：US10862491B2
公开(公告)日：2020-12-08
申请号：US16537154
申请日：2019-08-09
Applicant: ADVA Optical Networking SE
Inventor： Patrick Berthoud
IPC: H03L7/26 , G04F5/14 , H01J37/244
Abstract: A method and apparatus for increasing the operation lifetime of a beam tube are provided. The method includes converting an electrical current output by the beam tube into an intermediate voltage to provide a voltage signal used for changing an electron multiplier polarization voltage applied to an electron multiplier by a power supply unit controlled by an electron multiplier gain control signal generated by a controller. The controller regulates the electrical current output by the beam tube to keep it below a characteristic current threshold by adjusting the electron multiplier gain control signal until it reaches a predefined maximum value. The voltage signal applied to the controller is regulated by increasing the variable gain of a voltage amplifier to compensate for a drop in electrical current output by the beam tube caused by the aging of the electron multiplier until the applied voltage signal reaches a predefined minimum value.
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公开(公告)号：US10355445B2
公开(公告)日：2019-07-16
申请号：US15831739
申请日：2017-12-05
Applicant: ADVA Optical Networking SE
Inventor： Patrick Berthoud
Abstract: A redundant optical radiant energy source, especially for metrology applications, including a redundant optical device for creating optical radiation including at least two semiconductor lasers, which are provided on a thermally conducting laser support, at least one thermal sensor configured to detect the temperature of the laser support or at least one of the semiconductor lasers, respectively; and a heating/cooling device thermally connected to or integrally provided with the laser support.
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Patent Agency Ranking
公开(公告)号：US20170167913A1
公开(公告)日：2017-06-15
申请号：US15371947
申请日：2016-12-07
Applicant: ADVA Optical Networking SE
Inventor： Patrick Berthoud
CPC classification number: G01J1/0422 , G01J1/0455 , G01J1/4257 , G01J2001/446 , G04F5/00 , H01S3/13 , H01S2301/02
Abstract: Disclosed is a random light collector device including a reflecting cavity configured to enclose a random light source that randomly transmits photons. The reflecting cavity has an inner wall adapted to reflect at least a portion of the photons to an output port and guiding means for directing the photons to a photodetector. The guiding means is a hollow tube having an inner wall adapted to reflect the photons, wherein a first end of the hollow tube is connected to or positioned adjacent to the output port of the reflecting cavity and wherein the photodetector is provided within the hollow tube or at a second end such that a sensitive area of the photodetector covers the cross-section of the second end.
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公开(公告)号：US20240243543A1
公开(公告)日：2024-07-18
申请号：US18097963
申请日：2023-01-17
Applicant: ADVA Optical Networking SE
Inventor： Patrick Berthoud , Manuel Haldimann , Vladimir Dolgovskiy
CPC classification number: H01S3/1305 , H01S3/1303 , H03L7/26
Abstract: A method for compensating a reference frequency shift due to an interaction of resonant light provided by a resonant light source with atoms of an atomic beam crossing a resonant microwave cavity between light interaction zones includes toggling a wavelength of the provided resonant light between a main optical pumping transition, OPT1, and an alternate optical pumping transition, OPT2, of the atoms of the atomic beam while a frequency of the microwave probe signal fed into the microwave cavity is modulated with a frequency modulation depth, FMD. The method further includes computing a wavelength modulation compensation error signal, WM-CES depending on the measured signal amplitudes of Ramsey fringes used to control the frequency of the microwave probe signal fed into the microwave cavity.
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公开(公告)号：US20200059238A1
公开(公告)日：2020-02-20
申请号：US16537154
申请日：2019-08-09
Applicant: ADVA Optical Networking SE
Inventor： Patrick Berthoud
Abstract: A method and apparatus for increasing the operation lifetime of a beam tube, BT, (2) having an electron multiplier (2F) which amplifies a received ionic current with an electron multiplier gain, GEM, to provide an electrical current (IBT) output by the said beam tube, BT, (2), is provided. The method includes converting (S1) the electrical current (IBT) output by the beam tube, BT, (2) into an intermediate voltage (V1) amplified by a voltage amplifier (3C) with a variable gain, Gv, to provide a voltage signal (V2) used for a further processing and applied to a controller (3D), adjusting (S2) the electron multiplier gain, GEM, of the electron multiplier (2F) by changing an electron multiplier polarization voltage (UPOL) applied to the electron multiplier (2F) by a power supply unit (3F) controlled by an electron multiplier gain control signal (GEM-CRTL) generated by the controller (3D); regulating (S3) by the controller (3D) the electrical current (IBT) output by the said beam tube, BT, (2) to keep it below a characteristic current threshold, Ith, by adjusting the electron multiplier gain control signal (GEM-CTRL) until it reaches a predefined maximum value and regulating (S4) by the controller (3D) the voltage signal (V2) applied to the controller (3D) by increasing the variable gain, Gv, of the voltage amplifier (3C) to compensate for a drop of the electrical current (IBT) output by the said beam tube, BT, (2) caused by the aging of the electron multiplier (2F) until the applied voltage signal (V2) reaches a predefined minimum value.
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公开(公告)号：US10113905B2
公开(公告)日：2018-10-30
申请号：US15371947
申请日：2016-12-07
Applicant: ADVA Optical Networking SE
Inventor： Patrick Berthoud
Abstract: Disclosed is a random light collector device including a reflecting cavity configured to enclose a random light source that randomly transmits photons. The reflecting cavity has an inner wall adapted to reflect at least a portion of the photons to an output port and guiding means for directing the photons to a photodetector. The guiding means is a hollow tube having an inner wall adapted to reflect the photons, wherein a first end of the hollow tube is connected to or positioned adjacent to the output port of the reflecting cavity and wherein the photodetector is provided within the hollow tube or at a second end such that a sensitive area of the photodetector covers the cross-section of the second end.
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7.发明申请公开(公告)号：US20180159301A1
公开(公告)日：2018-06-07
申请号：US15831739
申请日：2017-12-05
Applicant: ADVA Optical Networking SE
Inventor： Patrick Berthoud
CPC classification number: H01S5/042 , H01S5/02212 , H01S5/02296 , H01S5/02415 , H01S5/02469 , H01S5/0617 , H01S5/06808 , H01S5/06825 , H01S5/0683 , H01S5/4025
Abstract: A redundant optical radiant energy source, especially for metrology applications, including a redundant optical device for creating optical radiation including at least two semiconductor lasers, which are provided on a thermally conducting laser support, at least one thermal sensor configured to detect the temperature of the laser support or at least one of the semiconductor lasers, respectively; and a heating/cooling device thermally connected to or integrally provided with the laser support.
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