Method for irradiating patterns in optical waveguides containing radiation sensitive constituents
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United States of America Patent
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Nov 16, 1999
Grant Date -
N/A
app pub date -
Sep 9, 1996
filing date -
Sep 9, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for establishing predetermined patterns in a selec region of an optical waveguide. A positioning device holds the waveguide proximate a radiation source. The radiation source defines a radiation pattern corresponding to the desired patterns. The resulting radiation patterns induce a loss in the light transmission capability in a portion of the waveguide that contains a radiation sensitive constituent and that the radiation penetrates. Thereafter the optical waveguide ages to reach an equilibrium state. Thereafter, the irradiated areas form the predetermined patterns in the optical waveguide. The patterns may take the form of Bragg gratings in the waveguide.
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