Control of the properties of micro-structured waveguides in lithium niobate crystal.
We study numerically depressed-index cladding, buried, micro-structured optical waveguides that can be formed in a lithium niobate crystal by femtosecond laser writing. We demonstrate to which extent the waveguiding properties can be controlled by the waveguide geometry at the relatively moderate induced refractive index contrasts that are typical of the direct femtosecond inscription.
Aston Institute of Photonic Technologies, School of Engineering and Applied Science, Aston University, Birmingham B4 7ET, UK.
Huseyin
H
Karakuzu
Mykhaylo
M
Dubov
Sonia
S
Boscolo
D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008904:Miniaturization; D009556:Niobium / Q000737:chemistry* / Q000528:radiation effects*; D010087:Oxides / Q000737:chemistry* / Q000528:radiation effects*; D012031:Refractometry / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D013499:Surface Properties / Q000528:radiation effects
D010087:Oxides; D009556:Niobium; C091692:lithium niobate