Integrated-optical properties of waveguides in reduced lithium niobate crystals

A. V. Sosunov^a, A. V. Shipitsyn^a, I. V. Petukhov^a, A. A. Mololkin^b, M. A. Bazalevsky<sup>b

a</sup> Perm State National Research University
^b National University of Science and Technology «MISIS», Moscow

Abstract: The structure and electro-optical properties of waveguides in reduced lithium niobate are being studied to improve the manufacturability and stability of integrated optical circuits. Optical loss is increase due to increased material defects during thermal annealing. Electro-optical coefficient r33 is 13.6% decrease to compared congruent lithium niobate samples. Finding a compromise between the electro-optical and pyroelectric properties of reduced lithium niobate for its effective use in integrated photonics and optoelectronics is a key future challenge.

Keywords: reduced lithium niobate, waveguide, electro-optical sensitivity, optical losses.

Received: 11.08.2025
Revised: 01.10.2025
Accepted: 01.10.2025

DOI: 10.61011/PJTF.2026.03.62180.20470

Bibliographic databases:

•