High air fraction photonic band gap fibers
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsJasbinder S Sanghera, Pablo C Pureza, Frederic H Kung, Daniel Gibson, Leslie Brandon Shaw, Ishwar D Aggarwal
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Abstract
A photonic band gap fiber and method of making thereof is provided. The fiber is made of a non-silica-based glass and has a longitudinal central opening, a microstructured region having a plurality of longitudinal surrounding openings, and a jacket. The air fill fraction of the microstructured region is at least about 40%. The fiber may be made by drawing a preform into a fiber, while applying gas pressure to the microstructured region. The air fill fraction of the microstructured region is changed during the drawing.
Claims10
A photonic band gap fiber, comprising:
- a non-silica-based glass defining a longitudinal central hole and a plurality of surrounding holes;
- a structured region, wherein the structured region includes all of the surrounding holes and the non-silica glass therebetween and wherein the structured region is disposed around the central hole;
- and
- a jacket of non-silica based glass, wherein the jacket surrounds the structured region;
- wherein the structured region has an air fill fraction of at least about 40%, wherein the air fill fraction is a ratio of air space to space occupying air and non-silica based glass.
Dependencies are inferred from the claim text.