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:
Jul. 31, 2018
Filed:
May. 04, 2016
Imra America, Inc., Ann Arbor, MI (US);
Shigeru Suzuki, Ann Arbor, MI (US);
Hugh A. McKay, Ann Arbor, MI (US);
Martin E. Fermann, Dexter, MI (US);
IMRA America, Inc., Ann Arbor, MI (US);
Abstract
This disclosure relates to polarizing optical fibers and polarization maintaining optical fibers, including active and/or passive implementations. An embodiment includes a polarizing (PZ) optical fiber that includes stress applying parts (SAPs) disposed in a first cladding region, the SAPs comprising a material with a thermal expansion coefficient, α. A core region is at least partially surrounded by cladding features and the SAPs. The core includes glass with a thermal expansion coefficient, α. The arrangement of the SAPs satisfies: R=d/D, where Dis the SAP center to core center distance, and dis the average SAP diameter, and dα=|α−α|, and where Rsc and dα may be sufficiently large to induce stress birefringence into the core and to provide for polarized output. Active fibers in which a portion of the fiber is doped may be implemented for application in fiber lasers, fiber amplifiers, and/or optical pulse compressors.