Photowritten gratings in ion-exchanged glass waveguides

J. E. Roman, K. A. Winick
1993 Optics Letters  
The fabrication of an ion-exchanged waveguide beam deflector containing a photowritten grating is described. The planar waveguide was fabricated by thermal K' exchange in a borosilicate glass. The grating was written by photobleaching an absorption defect centered at 330 am, which was created by y-ray irradiation of the glass. The bleaching was accomplished with the 351-nm line from an argon laser. The device achieved 35% deflection efficiency at 633 nm, which corresponded to a grating with a
more » ... a grating with a photoinduced index change of 2.6 x 10-5. This is to our knowledge the first demonstration of an ion-exchanged glass waveguide device containing a permanent photowritten grating.
doi:10.1364/ol.18.000808 pmid:19802280 fatcat:bhkrsffmqzgxpjq4v5wrhqqpom