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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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2.发明申请公开(公告)号：US20250003798A1
公开(公告)日：2025-01-02
申请号：US18343469
申请日：2023-06-28
Applicant: VIAVI SOLUTIONS INC.
Inventor： Driss TOUAHRI , Luis Andre Neves Paiva FERNANDES
Abstract: A monochromator apparatus in a grating-based optical spectrum analyzer (OSA) includes a diffraction grating, a reflector element, and a tunable spectral filter. The tunable spectral filter may include a band-pass filter, a low-pass filter, a high-pass filter, or a linear variable filter, for example. A spectral window of the filter may move synchronously with the scanning spectral window of the OSA. A high-pass filter implementation may be introduced during a subsequent portion of the OSA window before the optical ghost signal starts appearing. The filter may either be linearly scanned across the optical beam, angularly tuned, or introduced in a subsequent portion of the OSA scanning window.
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Patent Agency Ranking
3.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：US20240077678A1
公开(公告)日：2024-03-07
申请号：US17903401
申请日：2022-09-06
Applicant: VIAVI SOLUTIONS INC.
Inventor： Driss TOUAHRI , Joshua Benjamin Julius Philipson , Christopher Russell Wagner , Luis Andre Neves Paiva Fernandes , Robert Matthew Adams
CPC classification number: G02B6/266 , G02B6/2726 , G02B6/3574
Abstract: A variable optical attenuator (VOA) may include an input collimator with an input fiber connected on one side and an output collimator with an output fiber connected on one side, where the collimators are on a same surface of a VOA enclosure. A retroreflector may receive a light beam from the input collimator and reflect the light beam to the output collimator. The VOA may include an attenuation element positioned between the input collimator and the retroreflector and/or another attenuation element positioned between the retroreflector and the output collimator to provide variable attenuation to the light beam. The attenuation elements may be moved to set an attenuation level by one or more adjustment elements such as a miniature motor. The attenuation element may include a gradient index (GRIN) element, a polarizer, a neutral density filter, or a wavelength tunable filter.
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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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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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公开(公告)号：US20210325245A1
公开(公告)日：2021-10-21
申请号：US16849552
申请日：2020-04-15
Applicant: VIAVI SOLUTIONS INC.
Inventor： Driss TOUAHRI , Christopher Russell Wagner
Abstract: A system for a high resolution optical spectrum analyzer (OSA) using an efficient multi-pass configuration is disclosed. The system may include an entrance slit to allow inward passage of an optical beam. The system may also include a grating element to diffract the optical beam. The system may further include a retroreflective element to retroreflect the optical beam. The system may also include a mirror to reflect the optical beam. The system may include an exit slit, which in some examples may be adjacent to the entrance slit. The exit slit may allow outward passage of the optical beam for a high resolution optical measurement.
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