Grating formation in BGG31 glass by UV exposure

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© IEE
Published 29/07/2012

Abstract

A three-dimensional index variation grating in bulk BGG31 glass written using neither hydrogen loading nor germanium doping is demonstrated. This material is useful for fabricating ion-exchanged waveguides, and its photosensitivity to ultraviolet (UV) radiation at 248 nm has not been previously explored. Intensity measurements of the Bragg diffracted spots indicated a maximum index variation (Δn) of ~4 × 10–5.

Inspec keywords: borosilicate glasses; optical fabrication; ion exchange; optical communication equipment; aluminosilicate glasses; Bragg gratings; refractive index

Other keywords: intensity measurements; SiO2-B2O2-Al2O3-Na2O-F; Bragg grating formation; 248 nm; three-dimensional index variation; UV exposure; photosensitivity; index variation; Bragg diffracted spots; ion exchanged waveguides

Subjects: Optical communication equipment; Gratings, echelles; Optical communication devices, equipment and systems; Optical fabrication, surface grinding

References

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      • Nishii, J.: `Permanent index changes in Ge-SiO2 glasses by excimer laserirradiation', Mat. Sci. Eng., 1998, p. 1-10
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