Polarization separation in titanium-diffused waveguides on lithium niobate substrates

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• 作者：P. M. Karavaev ; I. V. Il’ichev ; P. M. Agruzov ; A. V. Tronev…
• 刊名：Technical Physics Letters
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：42
• 期：5
• 页码：513-516
• 全文大小：376 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Mechanics, Fluids and Thermodynamics
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1090-6533
• 卷排序：42

文摘

The influence of technological parameters of the process of thermal diffusion of titanium in lithium niobate substrates on the polarization-dependent losses of obtained optical waveguide has been theoretically studied. It is established that the anisotropy of refractive index variation leads to different conditions of polarization eigenmode cutoff that can be used for separating extraordinary and quenching ordinary polarization modes. Experiments with titanium-diffused waveguides showed the possibility of extraordinary polarization mode separation above 40 dB in the C-range (1530–1565 nm) of telecommunication wavelengths.Original Russian Text © P.M. Karavaev, I.V. Il’ichev, P.M. Agruzov, A.V. Tronev, A.V. Shamray, 2016, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2016, Vol. 42, No. 10, pp. 33–39.