Bragg grating optical fiber

Optical waveguides – Having particular optical characteristic modifying chemical... – Of waveguide core

Reexamination Certificate

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C385S037000, C385S143000

Reexamination Certificate

active

06993241

ABSTRACT:
The present invention provides an optical fiber providing high photosensitivity in the absence of hydrogen loading as well as a low numerical aperture. One aspect of the present invention relates to an optical fiber including a core, the core comprising silica doped with at least about 6 mol % germania and at least about 0.9 wt % fluorine; and a cladding surrounding the core. The optical fiber of the present invention is suitable for the production of fiber Bragg gratings.

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