Abstract:
The invention includes environmentally stable athermalized optical fiber gratings and methods of making such a stabilized optical waveguide fiber grating. Stable humidity-resistant athermalized fiber Bragg gratings (19) ar e provided by stabilizing a negative thermal expansion substrate (20) and utilizing a durable frit (24) to attach the fiber Bragg grating to the substrate.
Abstract:
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.
Abstract:
This invention is directed to photosensitivity opacifiable glasses requiring very short exposures to ultraviolet radiation to effect the development of opacity therein during a subsequent heat treatment thereof. The glasses consist essentially, expressed in terms of weight percent on the oxide basis, of about 14 18% Na2O, 0-6% ZnO, 6-12% Al2O3, 0-5% B2O3, 65-72% SiO2, and 0-0.2% Sb2O3, and 0.007-0.04% Ag, 0.008-0.05% Ceo2, 0.7-1.25% Br, and 1.5-2.5% F as analyzed in the glass, the sum of those components constituting at least 90% of the total composition.
Abstract:
The invention includes environmentally stable athermalized optical fiber gratings and methods of making such stabilized optical waveguide fiber grating. Stable humidity-resistant athermalized fiber Bragg gratings are provided by stabilizing a negative thermal expansion substrate and utilizing a durable frit to attach the fiber Bragg grating to the substrate.
Abstract:
The invention includes environmentally stable athermalized optical fiber gratings and methods of making such stabilized optical waveguide fiber grating. Stable humidity-resistant athermalized fiber Bragg gratings are provided by stabilizing a negative thermal expansion substrate and utilizing a durable frit to attach the fiber Bragg grating to the substrate.
Abstract:
An athermal optical device and a method for producing the device, such as an athermal optical fiber reflective grating, are described. The athermal optical fiber reflective grating device comprises a negative expansion substrate, an optical fiber mounted on the substrate surface, and a grating defined in the optical fiber. The method for producing the athermal optical fiber reflective grating device comprises providing a negative expansion substrate, mounting an optical fiber with at least one reflective grating defined therein onto the substrate upper surface, and affixing the optical fiber to the substrate at at least two spaced apart locations.
Abstract:
This invention is directed to the production of glass-ceramic articles exhibiting an apparent annealing point in excess of 400.degree.C and excellent resistance to moisture attack, the articles consisting essentially, in mole percent, of: Li2O 5-25 ZnO 35-50 Na2O 0-15 Al2O3 0.75-6 K2O 0-10 P2O5 29-37 Li2O+Na2O+K2O 5-25
Abstract:
The invention includes environmentally stable athermalized optical fiber gratings and methods of making such a stabilized optical waveguide fiber grating. Stable humidity-resistant athermalized fiber Bragg gratings (19) are provided by stabilizing a negative thermal expansion substrate (20) and utilizing a durable frit (24) to attach the fiber Bragg grating to the substrate.