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:
Oct. 29, 2013
Filed:
Jun. 15, 2011
Daniel J. Gibson, Cheverly, MD (US);
Jasbinder S. Sanghera, Ashburn, VA (US);
Frederic H. Kung, Alexandria, VA (US);
Pablo C Pureza, Burke, VA (US);
Robert E Miklos, La Plata, MD (US);
Guillermo R. Villalobos, Springfield, VA (US);
Leslie Brandon Shaw, Woodbridge, VA (US);
Ishwar D. Aggarwal, Charlotte, NC (US);
Daniel J. Gibson, Cheverly, MD (US);
Jasbinder S. Sanghera, Ashburn, VA (US);
Frederic H. Kung, Alexandria, VA (US);
Pablo C Pureza, Burke, VA (US);
Robert E Miklos, La Plata, MD (US);
Guillermo R. Villalobos, Springfield, VA (US);
Leslie Brandon Shaw, Woodbridge, VA (US);
Ishwar D. Aggarwal, Charlotte, NC (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A method and apparatus for making a substantially void-free preform for a microstructured optical fiber using a one-step process is provided. A preform is prepared from specialty glasses using a direct extrusion method. A die for use with the direct extrusion method is also provided, and a method for drawing the preform into a HC-PBG fiber for use in transmitting infra-red wavelength light is also provided. The preform comprises an outer jacket made of solid glass, a cladding having a plurality of air holes arranged in a desired pattern within the jacket, and a core which is hollow.