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1.发明公开公开(公告)号：US20240110831A1
公开(公告)日：2024-04-04
申请号：US18486355
申请日：2023-10-13
Applicant: VIAVI SOLUTIONS INC.
CPC classification number: G01J3/0224 , G01J3/447
Abstract: A system for a high resolution optical spectrum analyzer (OSA) using various optical configurations to reduce polarization dependent loss (PDL) is disclosed. The system may include a birefringent element to receive an input optical beam. The birefringent element may then split the optical beam into at least two exit beams. The system may also include an optical configuration comprising at least one optical element. The optical configuration may receive the at least two exit beams from the birefringent element and transform at least one of the two exit beams using the at least one optical element to provide two parallel beams with parallel polarizations. The optical configuration may then output the two parallel beams with parallel polarizations to a downstream optical element, such as a diffraction grating, or other optical element.
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公开(公告)号：US20220390281A1
公开(公告)日：2022-12-08
申请号：US17339690
申请日：2021-06-04
Applicant: VIAVI SOLUTIONS INC.
Inventor： Driss TOUAHRI , Christopher Russell WAGNER
Abstract: A system for a high resolution optical spectrum analyzer (OSA) using various optical configurations to reduce polarization dependent loss (PDL) is disclosed. The system may include a birefringent element to receive an input optical beam. The birefringent element may then split the input optical beam into a first optical beam and a second optical beam. The system may also include an optical configuration, which may determine an optical beam path associated with the first optical beam and the second optical beam, transmit the first optical beam in a first direction along the optical beam path and transmit the second optical beam in a second direction along the optical beam path.
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3.发明申请公开(公告)号：US20250146902A1
公开(公告)日：2025-05-08
申请号：US18504540
申请日：2023-11-08
Applicant: VIAVI SOLUTIONS INC.
Inventor： Joshua Benjamin Julius PHILIPSON , Kevin CASSADY , Nicklos Joseph BULITKA , Christopher Russell WAGNER , Christian Richard COMTOIS-ARNALDO
Abstract: Systems, methods, and devices for inspection, under a microscope, of end connectors of fiber optic cables are provided. In one aspect, a light ring including a circular array of light sources provides darkfield illumination to an end connector being inspected under a microscope. Each of the light sources may be lit in series and the resulting shadows may be used to identify dirt on the end connector, as well as to determine whether any dirt identified on the end connector can be cleaned off. In another aspect, a light ring combined with a redirection ring (e.g., a reflector and/or refractor ring) may provide darkfield illumination. In yet another aspect, a series of images may be captured and analyzed to automatically identify dirt on the end connector, as well as to determine whether any identified dirt can be cleaned off.
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Patent Agency Ranking
公开(公告)号：US20240019721A1
公开(公告)日：2024-01-18
申请号：US18359678
申请日：2023-07-26
Applicant: VIAVI SOLUTIONS INC.
IPC: G02F1/01 , H04B10/532 , H04B10/2569 , H04J14/06 , G02B3/00 , G02B6/27
CPC classification number: G02F1/0136 , H04B10/532 , H04B10/2569 , H04J14/06 , G02B3/0087 , G02B6/2786 , G02F1/0139
Abstract: A polarization scrambler using a retardance element (RE) is disclosed. The polarization scrambler may include an optical fiber input to transmit an optical signal, and a beam expander to receive and expand the optical signal to create an expanded optical signal. The polarization scrambler may include a retardance element (RE) to cause a polarization scrambling effect on the expanded optical signal and to create a scrambled expanded optical signal. The polarization scrambler may include a beam reducer to receive and reduce the scrambled expanded optical signal to create a scrambled optical signal. The polarization scrambler may include an optical fiber output to receive scrambled optical signal. The optical fiber output may transmit the scrambled optical signal to one or more downstream optical components.
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5.发明申请公开(公告)号：US20220381609A1
公开(公告)日：2022-12-01
申请号：US17334132
申请日：2021-05-28
Applicant: VIAVI SOLUTIONS INC.
Abstract: A system for a high resolution optical spectrum analyzer (OSA) using various optical configurations to reduce polarization dependent loss (PDL) is disclosed. The system may include a birefringent element to receive an input optical beam. The birefringent element may then split the optical beam into at least two exit beams. The system may also include an optical configuration comprising at least one optical element. The optical configuration may receive the at least two exit beams from the birefringent element and transform at least one of the two exit beams using the at least one optical element to provide two parallel beams with parallel polarizations. The optical configuration may then output the two parallel beams with parallel polarizations to a downstream optical element, such as a diffraction grating, or other optical element.
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公开(公告)号：US20230324219A1
公开(公告)日：2023-10-12
申请号：US17716585
申请日：2022-04-08
Applicant: VIAVI SOLUTIONS INC.
Inventor： Christopher Russell WAGNER
CPC classification number: G01J1/44 , H03F3/45475 , H03M1/124 , G01J2001/4406 , G01J2001/446
Abstract: A system for amplification of optical signals for optical measurement instrumentation is disclosed. The system may include a first logarithmic amplifier circuit in a first amplification path, and a linear amplifier circuit and a second logarithmic amplifier circuit coupled in series in a second amplification path. The first and second amplification paths may receive an input signal from a photodiode and provide amplified signals, in parallel, to a selection circuit, which may select one of the outputs of the first and second amplification paths based on one or two power thresholds. The selection circuit may then provide the selected output to a measurement circuit or device. In some examples, the system may also include a sampling circuit to sample the outputs and an analog-digital conversion circuit to digitize the outputs before selection. The power threshold(s) may be determined based on a saturation level of the linear amplifier circuit.
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公开(公告)号：US20220390322A1
公开(公告)日：2022-12-08
申请号：US17341261
申请日：2021-06-07
Applicant: VIAVI SOLUTIONS INC.
Inventor： Luis Andre Neves Paiva FERNANDES , Robert Matthew ADAMS , Christopher Russell WAGNER , Joshua Benjamin Julius PHILIPSON , Eugene CHAN
Abstract: According to examples, a system for measuring polarization dependent loss (PDL) for a device-under-test (DUT) may include a tunable laser, a polarization element and a power meter. The tunable laser may emit an optical signal to sweep across an optical band at a constant rate. The polarization element may scramble polarizations states of the optical signal emitted from the tunable laser. The power meter may take power measurements associated with the optical signal emitted from the tunable laser, wherein the power measurements from the power meter are used to determine a maximum insertion loss (IL) and a minimum insertion loss (IL) associated with the device-under-test (DUT). An average insertion loss (IL) and a polarization dependent loss (PDL) for the device-under-test (DUT) may be calculated based on the maximum insertion loss (IL) and the minimum insertion loss (IL) associated with the device-under-test (DUT).
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公开(公告)号：US20210389232A1
公开(公告)日：2021-12-16
申请号：US16900519
申请日：2020-06-12
Applicant: VIAVI SOLUTIONS INC.
Inventor： Jeffery Stephen GRAVES , Elias DEBS , Darko CUGALJ , Christopher Russell WAGNER , Driss TOUAHRI
Abstract: An apparatus for providing an improved coupling link with integrated beam blocking and a bearing assembly using an axial preloading technique is disclosed. The apparatus may include a coupling link comprising a first end, a second end, and a middle section. The middle section may be connectable to a beam blocking element. The first end may include a first bearing assembly and may be connectable to a motor drive arm. The second end may include a second bearing assembly and may be connectable to an optical-mechanical element. In some examples, the apparatus may be used in various optical measurement and testing applications and environments. In some examples, the improved coupling link may also utilize an axial preloading technique to minimize excessive movement in bearings assemblies.
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