The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2025
Filed:
Mar. 07, 2023
Lumentum Technology Uk Limited, Northamptonshire, GB;
Brian Garrett, Devon, GB;
Amyas Holroyd, Devon, GB;
Chalani Abeywardena, Devon, GB;
Michael Rigby-Jones, Devon, GB;
Lumentum Technology UK Limited, Northamptonshire, GB;
Abstract
In some implementations, a controller may apply a set of phase dithers to a first inner Mach-Zehnder (MZ) interferometer and a second inner MZ interferometer, the first inner MZ interferometer and the second inner MZ interferometer being included in an outer MZ interferometer, the set of phase dithers including a first in-phase dither state and a second in-phase dither state and including a first anti-phase dither state and a second anti-phase dither state. The controller may determine an initial error term based at least in part on the set of phase dithers. The controller may adjust, based on the initial error term, the outer MZ interferometer to a target phase associated with a target error term, wherein respective branches of at least one of the first MZ interferometer or the second MZ interferometer are adjusted differentially.