Optical waveguides – Optical fiber waveguide with cladding
Reexamination Certificate
2007-07-24
2009-02-10
Doan, Jennifer (Department: 2874)
Optical waveguides
Optical fiber waveguide with cladding
C385S124000, C385S125000, C385S126000, C385S127000, C065S385000, C065S393000, C065S398000
Reexamination Certificate
active
07489847
ABSTRACT:
A single-mode optical fiber segment incorporating liquid-filled holes parallel to the core that are sealed at each end. Heating the liquid produces stress in the fiber and thereby increases the birefringence level. Alternatively the holes may be filled and sealed at a temperature lower than the temperature at which the fiber will be operated, the temperature difference determining the stress level for given hole characteristics.
REFERENCES:
patent: 7062140 (2006-06-01), Bjarklev
patent: 7116887 (2006-10-01), Farroni et al.
patent: 0630864 (1994-12-01), None
K. Nielsen, D. Noordegraaf, T. Sørensen, A. Bjarklev, and T. P. Hansen, “Selective filling of photonic crystal fibres,” J. Opt. A: Pure Appl. Opt. 7, L13-L20 (2005).
Callahan Kenneth E.
Doan Jennifer
The United States of America as represented by the Secretary of
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