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:
Jan. 04, 2022
Filed:
Sep. 11, 2018
University of Southampton, Southampton, GB;
Francesco Poletti, Southampton, GB;
Gregory Teofil Jasion, Southampton, GB;
Natalie Wheeler, Southampton, GB;
Thomas David Bradley, Southampton, GB;
Mubassira B Syed Nawazuddin, Southampton, GB;
John Hayes, Southampton, GB;
University of Southampton, Southampton, GB;
Abstract
A preform () for an antiresonant hollow core optical fibre comprises an outer jacket tube () having an inner surface and a central longitudinal axis (); a plurality of antiresonant cladding tubes () spaced apart at predefined peripheral locations around the inner surface of the outer jacket tube (), each antiresonant cladding tube () in contact with the inner surface such that a central longitudinal axis () of each antiresonant cladding tube () is at a first radial distance from the central longitudinal axis () of the outer jacket tube (); and a plurality of spacing elements () disposed alternately with the antiresonant cladding tubes () and each in contact with an outer surface of each of two adjacent antiresonant cladding tubes () at one or more contact points (), the contact points () at a second radial distance from the central longitudinal axis () of the outer jacket tube (), the second radial distance being greater than the first radial distance.