Title

Redistribution of Optical Power in the Arms of a Waveguide Y-splitter under Local External Illumination of the Lithium Niobate Substrate.

Authors

Parfenov, M. V.; Tronev, A. V.; Ilichev, I. V.; Agruzov, P. M.; Shamrai, A. V.

Abstract

The optical tuning of the power splitting ratio in an integrated optical Y-splitter fabricated on the substrate of a photorefractive lithium niobate crystal (LiNbO3) has been studied. The areas of the Y-splitter that are most sensitive to local external illumination are determined. Tuning of the splitting ratio by 2% was experimentally demonstrated, which can be effectively used to increase the extinction ratio in Mach–Zehnder modulators.

Subjects

LITHIUM niobate; PHOTOREFRACTIVE effect; OPTICAL modulators; LIGHTING; INTEGRATED optics; ARM

Publication

Technical Physics Letters, 2020, Vol 46, Issue 1, p4

ISSN

1063-7850

Publication type

Academic Journal

DOI

10.1134/S1063785020010101