Open AccessPhase sensitive amplification in a periodically poled gradient lithium niobate waveguide
Author(s) -
V. V. Galutskiy,
S. S. Ivashko,
E. P. Stroganova
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1697/1/012164
Subject(s) - lithium niobate , materials science , waveguide , amplifier , optics , phase (matter) , signal (programming language) , optical amplifier , second harmonic generation , optoelectronics , physics , laser , cmos , quantum mechanics , computer science , programming language
The article presents a phase sensitive amplifier based on cascaded second harmonic generation and difference frequency generation in a waveguide in the gradient periodically poled lithium niobate. The influence of the composition gradient in periodically poled lithium niobate on phase and spectral dependence of amplification factor is described. The increase of 35% is shown in spectral range of the gradient amplifier in comparison with the gradientless one in the range of 1.55 μm. The dependence of amplification factor of the optical signal from the propagation direction in the waveguide channel in gradient PPLN is also presented.