Method for making stable optical devices employing...

G - Physics – 02 – F

Patent

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G02F 1/19 (2006.01) G02B 5/18 (2006.01) G02B 6/124 (2006.01) G02B 6/13 (2006.01) G02B 6/12 (2006.01)

Patent

CA 2133849

The present invention is predicated upon the discovery by applicants of a relationship describing thermal decay of radiation-induced index changes and a mechanism which permits stabilization by accelerated aging, Specifically, the induced index change decays in proportion to 1/(1 + At .alpha.) where A and .alpha. are functions of temperature, and the decay can be accelerated by heat treatment. As a consequence, the extent of decay can be determined for arbitrary time and temperature and, significantly, an appropriate heat treatment can be scheduled for making a device stable within predeterminable limits.

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