• Tunable Bragg filters with a phase transition material defect layer
    with X. Wang, Z. Gong, K. Dong, Lou S., J. Slack, and A. Anders
    © 2016 Optical Society of America.We propose an all-solid-state tunable Bragg filter with a phase transition material as the defect layer. Bragg filters based on a vanadium dioxide defect layer sandwiched between silicon dioxide/titanium dioxide Bragg gratings are experimentally demonstrated. Temperature dependent reflection spectroscopy shows the dynamic tunability and hysteresis properties of the Bragg filter. Temperature dependent Raman spectroscopy reveals the connection between the tunabili…Read more