초록 ▼

The invention includes methods of stabilizing negative thermal expansion glass-ceramic optical waveguide substrates. The invention includes the stabilized negative thermal expansion glass-ceramic optical waveguide substrates. The stabilized substrates have very stable physical characteristics such a

The invention includes methods of stabilizing negative thermal expansion glass-ceramic optical waveguide substrates. The invention includes the stabilized negative thermal expansion glass-ceramic optical waveguide substrates. The stabilized substrates have very stable physical characteristics such as dimensional length when exposed to extreme environments. The stabilized substrates are used to athermalize optical waveguide devices such as optical fiber grating. The stabilized substrates are particularly well suited for providing athermalized fiber Bragg grating.

대표청구항 ▼

1. A negative thermal expansion substrate for athermalizing an optical waveguide device for use in an optical waveguide deployment environment, said substrate comprising:a microcracked negative thermal glass-ceramic body having a dimensional length, said glass-ceramic body having a plurality of micr

1. A negative thermal expansion substrate for athermalizing an optical waveguide device for use in an optical waveguide deployment environment, said substrate comprising:a microcracked negative thermal glass-ceramic body having a dimensional length, said glass-ceramic body having a plurality of microcracks, said microcracks having a stabilized saturated subcritical crack growth length wherein said dimensional length of said glass-ceramic body is stabilized when exposed to said optical waveguide deployment environment.