Abstract
Novel Bragg grating waveguide structures have been fabricated in bulk borosilicate glass through a type II photosensitivity mechanism driven by single femtosecond laser pulses. Low-loss single-mode waveguides and narrow-linewidth Bragg gratings were generated simultaneously by forming an array of refractive index voxels in a single laser scan. Laser pulse duration is shown to significantly affect the grating strength and waveguide loss. Bragg wavelengths, defined by the periodicity of laser-modified volumes, were fully controlled by the sample scan speed to provide resonances anywhere in the telecommunication bands. Four linear Bragg filters with distinct resonant wavelengths are presented that define the first demonstration of laser writing of multiple-wavelength and cascaded Bragg grating waveguides in a single process step.
© 2006 Optical Society of America
Full Article | PDF ArticleMore Like This
Haibin Zhang, Shane M. Eaton, and Peter R. Herman
Opt. Lett. 32(17) 2559-2561 (2007)
Markus Thiel, Günter Flachenecker, and Wolfgang Schade
Opt. Lett. 40(7) 1266-1269 (2015)
Simon Gross, Martin Ams, David G. Lancaster, Tanya M. Monro, Alexander Fuerbach, and Michael J. Withford
Opt. Lett. 37(19) 3999-4001 (2012)