Optical waveguides – Optical fiber waveguide with cladding – Utilizing nonsolid core or cladding
Reexamination Certificate
2011-01-18
2011-01-18
Healy, Brian M (Department: 2883)
Optical waveguides
Optical fiber waveguide with cladding
Utilizing nonsolid core or cladding
C385S123000, C385S122000, C385S141000, C065S385000, C065S398000, C065S393000
Reexamination Certificate
active
07873251
ABSTRACT:
A photonic band gap fiber and method of making thereof is provided. The fiber is made of a germanate glass comprising at least 30 mol % of a germanium oxide 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 90%. 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.
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Aggarwal Ishwar D.
Bayya Shyam S.
Sanghera Jasbinder S.
Shaw Leslie Brandon
Healy Brian M
Koshy Suresh
Ressing Amy
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