  Lithium niobate (LN) based devices are widely used in integrated and
nonlinear optics. This material is robust and resistive to high temperatures,
which makes the LN-based devices table, but challenging to fabricate. In this
work we report on the design, manufacturing and characterization of engineered
dielectric media with thin film lithium niobate (TFLN) on top for the coupling
and propagation of electromagnetic surface waves at the telecommunication
wavelengths. The designed one-dimentional photonic crystal (1DPhC) sustains
Bloch surface waves at the multilayer/air interface at 1550 nm wavelength with
a propagation detected over a distance of 3 mm. The working wavelength and
improved BSW propagation parameters open the way for exploration of nonlinear
properties of BSW based devices. It is also expected that these novel devices
will modify BSW propagation and coupling by external thermal/electrical stimuli
due to the improved quality of the TFLN top layer of 1DPhC.
