Skip to main content

5 Result(s)

within M. Kuneva Remove this filter

and

  1. No Access

    Article

    Influence of Thermal Pretreatment of Lithium Niobate Plates on the Characteristics of Proton-Exchange Waveguides

    A complex study of the influence of the thermal pretreatment of X cut lithium niobate plates (JSC Fomos-Materials, Russia) on the formation of proton-exchange planar waveguides has been performed using structu...

    A. V. Sosunov, I. V. Petukhov, Alexander A. Zhuravlev… in Crystallography Reports (2022)

  2. No Access

    Article

    Proton exchanged LiNbO3: XPS, IR and optical study

    A comparative investigation of virgin and proton exchanged X-cut samples of LiNbO3 is performed by X-ray photoelectron spectroscopy, infrared absorption spectroscopy and optical waveguide measurements. The thickn...

    M. Kuneva, V. Krastev in Applied Physics A (1996)

  3. No Access

    Chapter

    Waveguide Mach-Zehnder Intensity Modulator produced via Proton Exchange Technology in LiNbO3

    Guided-wave Mach-Zehnder intensity modulators are key elements for a variety of applications in optical communications. They usually present a broad operation band and low drive voltages. Two general ways for ...

    S. Tonchev, B. Yordanov, M. Kuneva… in Devices Based on Low-Dimensional Semicondu… (1996)

  4. No Access

    Article

    Raman scattering and phase state of H:LiTaO3 waveguide thin films

    Raman scattering of optical waveguides formed by proton-exchange in lithium tantalate is studied. The effect of a post-exchange annealing up to 420°C on the optical properties and Raman spectra are also invest...

    I. Savatinova, S. Tonchev, M. Kuneva, E. Liarokapis in Applied Physics A (1994)

  5. No Access

    Article

    Phase transition study of H:LiNbO3 waveguides by Raman spectroscopy

    New results on Raman spectra of protonated LiNbO3 are reported in order to clarify the structural and compositional changes in waveguide layers during proton exchange and post-exchange annealing processes. Sample...

    I. Savatinova, S. Tonchev, M. Kuneva in Applied Physics A (1993)