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.
Bibliographical note© 2013 OSA. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-14-17122. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
- lithium niobate
- microstructured waveguide
- fs laser microfabrication
- depressed cladding
- propagation losses
Karakuzu, H., Dubov, M., & Boscolo, S. (2013). Control of the properties of micro-structured waveguides in lithium niobate crystal. Optics Express, 21(14), 17122-17130. https://doi.org/10.1364/OE.21.017122