Single-mode LiNbO 3 -based waveguides for L-band interferometry

Abstract

We present three different techniques for single-mode waveguide realization in Lithium Niobate at the 3.39µm atmospheric transmission band, named L-band. These methods include Titanium diffusion, Ion Beam Implantation and Photo-inscription. After describing the fabrication process and waveguide characterization, we will present an integrated interferometer based on the Young's double slit experiment. From the recorded interferogram we recover information about the source, namely, its peak emission lines.