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:
Aug. 16, 2022
Filed:
May. 15, 2020
Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US);
Tipd, Llc, Tucson, AZ (US);
Valery Temyanko, Tucson, AZ (US);
Leonid Kotov, Tucson, AZ (US);
Nasser Peyghambarian, Tucson, AZ (US);
Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US);
TIPD, LLC, Tucson, AZ (US);
Abstract
A gain fiber assembly for use in optical fiber amplification systems such as fiber amplifiers and fiber lasers utilizes an active or 'bare' fiber that has a single glass cladding with an outer diameter of less is less than 80 μm and preferably less than 60 μm or even 40 μm. A passive double-clad input fiber is stripped of the outer cladding and tapered to match the outer diameter of the bare fiber. A glass-fluid or glass-vacuum interface along the taper provides guidance of the pump into and along the cladding of the bare fiber and a NA>1 for a vacuum or gasses and an NA>0.8 for liquids. This allows for much shorter fiber lengths to reach max signal power and higher pump conversion efficiencies.