P. M. Karavaev, I. V. Il'ichev, P. M. Agruzov, A. V. Tronev, A. V. Shamray, “Polarization separation in titanium-diffused waveguides on lithium niobate substrates”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2016, Volume 42, Issue 10,Pages <nobr>33

This article is cited in 14 papers

Polarization separation in titanium-diffused waveguides on lithium niobate substrates

P. M. Karavaev^a, I. V. Il'ichev^a, P. M. Agruzov^a, A. V. Tronev^ab, A. V. Shamray^abc

^a Ioffe Institute, St. Petersburg
^b St. Petersburg National Research University of Information Technologies, Mechanics and Optics
^c Peter the Great St. Petersburg Polytechnic University

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.

Received: 06.01.2016