Optical fiber with tunable birefringence using pressurized...

Optical waveguides – Optical fiber waveguide with cladding

Reexamination Certificate

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C385S124000, C385S125000, C385S126000, C385S127000, C065S385000, C065S393000, C065S398000

Reexamination Certificate

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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).

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