Title :
Grating formation in BGG31 glass by UV exposure
Author :
Provenzano, D. ; Marshall, W.K. ; Yariv, A. ; Geraghty, D.F. ; Honkanen, S. ; Peyghambarian, N.
Author_Institution :
California Inst. of Technol., Pasadena, CA, USA
fDate :
8/5/1999 12:00:00 AM
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
Keywords :
Bragg gratings; aluminosilicate glasses; borosilicate glasses; ion exchange; optical communication equipment; optical fabrication; refractive index; 248 nm; Bragg diffracted spots; Bragg grating formation; SiO2-B2O2-Al2O3 -Na2O-F; UV exposure; index variation; intensity measurements; ion exchanged waveguides; photosensitivity; three-dimensional index variation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990902
