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, 2016
Filed:
Dec. 06, 2010
Daniel J. Gibson, Cheverly, MD (US);
Jasbinder S. Sanghera, Ashburn, VA (US);
Frederic H. Kung, Alexandria, VA (US);
Ishwar D. Aggarwal, Fairfax Station, VA (US);
Daniel J. Gibson, Cheverly, MD (US);
Jasbinder S. Sanghera, Ashburn, VA (US);
Frederic H. Kung, Alexandria, VA (US);
Ishwar D. Aggarwal, Fairfax Station, VA (US);
The United States of America, as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
The present invention is generally directed to a method of making a hollow-core photonic band gap preform from a specialty glass by pressing a specialty glass through a die to form a tube wherein the outer transverse shape of the tube is a hexagon, triangle, quadrilateral, or other polygon; stretching the tube to form a micro-tube with approximately the same outer transverse shape as the tube; stacking a plurality of micro-tubes into a bundle minimizing voids between adjacent micro-tubes and forming a central longitudinal void wherein the plurality of micro-tubes within the bundle comprise an inner structured region of the preform and the central void of the bundle comprises a hollow core in the preform; and inserting the bundle into a jacket tube. Also disclosed are the hollow-core photonic band gap preform and fiber formed by this method.