New from the Wasserman group, we show dynamic control of polarization states using a modified barium titanate (BTO) Mach Zehnder Interferometer (MZI). Led by Mid-IR Photonics group graduate student Daniel Krueger, with Alex Demkov‘s group and La Luce Cristallina, we show that we can control the output polarization from BTO-on-Si substrate MZI from left-circular to linear to right circular, all with less than 10V of applied bias. The ability to dynamically control polarization states, at the chip-scale, could have potential applications in sensing, communication, or even quantum systems. This work was funded by the NASA – National Aeronautics and Space Administration, through the Quantum Pathways Institute , a Multidisciplinary University Research Initiative from Air Force Office of Scientific Research (AFOSR), and the Office of Naval Research.
Out now in Applied Physics Letters
