Stress induced birefringence tuning in femtosecond laser fabricated waveguides in fused silica

dc.contributor.author Paulo Vicente Marques en
dc.contributor.author Luís André Fernandes en
dc.contributor.author Jason R. Grenier en
dc.contributor.author Peter R. Herman en
dc.contributor.author J. Stewart Aitchison en
dc.date.accessioned 2017-11-17T12:03:20Z
dc.date.available 2017-11-17T12:03:20Z
dc.date.issued 2012 en
dc.description.abstract Femtosecond laser exposure produces form and stress birefringence in glasses, mainly controlled by laser polarization and pulse energy, which leads to challenges in certain applications where polarization mode dispersion or birefringence splitting is critical for the desired responses from optical devices. In this paper, parallel laser modification tracks with different geometries were applied to preferentially stress the laser-written waveguides and explore the possibility of tuning the waveguide birefringence in devices fabricated in bulk fused silica glass. Polarization splitting in Bragg grating waveguides showed the laser modification tracks to controllably add or subtract stress to the pre-existing waveguide birefringence, demonstrating independence from the nanograting induced form birefringence and the contributions from material stress. Stressing bars are shown that offer tunable birefringence in the range from ∼0 up to 4.35 × 10−4, possibly enabling great flexibility in desig en
dc.identifier.uri http://repositorio.inesctec.pt/handle/123456789/3383
dc.identifier.uri http://dx.doi.org/10.1364/OE.20.024103 en
dc.language eng en
dc.relation 4853 en
dc.relation 4287 en
dc.rights info:eu-repo/semantics/openAccess en
dc.title Stress induced birefringence tuning in femtosecond laser fabricated waveguides in fused silica en
dc.type article en
dc.type Publication en
Files