Optical clarity and waveguide performance of thin film perovskites on MgO

The optical clarity of a new class of thin film waveguides, epitaxial perovskites on MgO, has been characterized and found to have optical clarity comparable to in-diffused waveguide structures typically represented by Ti drifted LiNbO3. For the simplest member within this new class, SrTiO3, measurements of the wavelength dependence of optical loss show a monotonic decrease with increasing wavelength between 475 and 705 nm, reaching a value of 1 dB/cm at 705 nm.