公开(公告)号：US20190277724A1

公开(公告)日：2019-09-12

申请号：US16024227

申请日：2018-06-29

Applicant: VIAVI SOLUTIONS INC.

Inventor： Robert Matthew ADAMS ,  Joshua PHILIPSON ,  Chris WAGNER ,  Grant TESSARO

IPC: G01M11/00

Abstract: A test instrument tests an optical component of a fiber optic network. The test instrument determines signal parameters describing pulses to be emitted by lasers of the test instrument to test the optical component, and directly modulates the lasers to repeatedly emit the pulses at different wavelengths on a single fiber optic cable in a time division multiplexing manner. The test instrument triggers powering measurements to coincide with the emitted pulses, and determines performance parameters of the optical component based on the triggered power measurements.

公开(公告)号：US20210003472A1

公开(公告)日：2021-01-07

申请号：US17021721

申请日：2020-09-15

Applicant: VIAVI SOLUTIONS INC.

Inventor： Robert Matthew ADAMS ,  Joshua PHILIPSON ,  Chris WAGNER ,  Grant TESSARO

IPC: G01M11/00

Abstract: A test instrument tests an optical component of a fiber optic network. The test instrument determines signal parameters describing pulses to be emitted by lasers of the test instrument to test the optical component, and directly modulates the lasers to repeatedly emit the pulses at different wavelengths on a single fiber optic cable in a time division multiplexing manner. The test instrument triggers powering measurements to coincide with the emitted pulses, and determines performance parameters of the optical component based on the triggered power measurements.

公开(公告)号：US20170219853A1

公开(公告)日：2017-08-03

申请号：US15011189

申请日：2016-01-29

Applicant: VIAVI SOLUTIONS INC.

Inventor： Joshua PHILIPSON ,  Chris WAGNER ,  Grant TESSARO ,  Robert Matthew ADAMS

IPC: G02F1/01 ,  G01B11/27 ,  G02B6/27

Abstract: According to an example, a polarization control system is to manipulate polarization manipulators to output light that achieves a trajectory on a Poincaré sphere that tracks a known trajectory of a polarizer on the Poincaré sphere, in which the trajectory of the output light enables definition of a reference polarization state of the output light. The polarization control system may also manipulate an output polarization manipulator to set the output light to a predefined polarization state based upon the reference polarization state.

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.

Inventor： Joshua PHILIPSON ,  Christopher Russell WAGNER ,  Luis Andre Neves Paiva FERNANDES

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.

公开(公告)号：US20190280457A1

公开(公告)日：2019-09-12

申请号：US16297328

申请日：2019-03-08

Applicant: VIAVI SOLUTIONS INC.

Inventor： Robert Matthew ADAMS ,  Joshua PHILIPSON ,  Darren BRUCE

IPC: H01S5/00 ,  G01R31/26 ,  H01S5/0683

Abstract: A test instrument is operable to test optical components of a fiber optic network. The test instrument includes a laser having a back-facet monitor. The test instrument measures a performance parameter of an optical component being tested based on optical power of the laser measured by the back-facet monitor. The performance parameter is determined based on optical power measurements that account for drift of the laser.