Polarization separation in titanium-diffused waveguides on lithium niobate substrates
- Authors: Karavaev P.M.1, Il’ichev I.V.1, Agruzov P.M.1, Tronev A.V.1,2, Shamray A.V.1,2,3
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Affiliations:
- Ioffe Physical Technical Institute
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University)
- Peter the Great St. Petersburg Polytechnic University
- Issue: Vol 42, No 5 (2016)
- Pages: 513-516
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/199149
- DOI: https://doi.org/10.1134/S1063785016050266
- ID: 199149
Cite item
Abstract
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.
About the authors
P. M. Karavaev
Ioffe Physical Technical Institute
Author for correspondence.
Email: pmk.shuv@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
I. V. Il’ichev
Ioffe Physical Technical Institute
Email: pmk.shuv@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
P. M. Agruzov
Ioffe Physical Technical Institute
Email: pmk.shuv@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
A. V. Tronev
Ioffe Physical Technical Institute; St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University)
Email: pmk.shuv@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021; St. Petersburg, 197101
A. V. Shamray
Ioffe Physical Technical Institute; St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University); Peter the Great St. Petersburg Polytechnic University
Email: pmk.shuv@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021; St. Petersburg, 197101; St. Petersburg, 195251