Maryland's Defense Patent Database

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Direct extrusion method for the fabrication of photonic band gap (PBG) fibers and fiber preforms

Patent image
NRL

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.

Inventors: 
Gibson, Daniel J.; Sanghera, Jasbinder S.; Kung, Frederic H.; Pureza, Pablo C.; Miklos, Robert E.; Villalobos, Guillermo R.; Shaw, Leslie Brandon; Aggarwal, Ishwar D.
Patent Number: 
Technical domain: 
Machines and Processing
FIle Date: 
2011-06-15
Grant Date: 
2013-10-29
Grant time: 
867 days
Grant time percentile rank: 
15
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY