非线性奇偶时间对称四层布拉格光栅的分析

IF 0.7 4区物理与天体物理 Q4 OPTICS

Optica Applicata Pub Date : 2022-01-01 DOI:10.37190/oa220301

P. Witoński, A. Mossakowska-Wyszyńska

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引用次数: 0

摘要

分析了具有增益和损耗饱和效应的一维PT(宇称时间)对称四层布拉格光栅，并考虑了其场振幅的变化。所研究的结构具有折射率的实部和虚部调制。考虑了布拉格光栅的功能配置，显示了该结构作为分立器件和集成电路组件的行为。所得特性说明了在给定入射平面波强度下，PT结构的不同增益和损耗饱和强度值下，饱和效应对输出波强度的影响。分析表明，该结构具有双稳定性，入射波强度对光传播非互易特性有较大影响。

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Analysis of nonlinear parity-time symmetric four-layer Bragg grating

The one dimensional PT (parity time) symmetric four-layer Bragg grating with gain and loss saturation effects is analyzed taking into account the evolution of the field amplitudes. The investigated structure has modulated real and imaginary parts of refractive index. The functional configurations of the Bragg grating have been considered, showing the behavior of this structure acting as a discrete device and as a component of an integrated circuit. The obtained characteristics illustrate the influence of the saturation effect on the intensity of the output wave at a given intensity of the incident plane wave for different values of gain and loss saturation intensities of the PT structure. The performed analysis shows the bistability of the structure and a strong influence of the incident wave intensity on the properties of light propagation nonreciprocity.

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来源期刊

Optica Applicata 物理-光学

CiteScore

1.00

自引率

16.70%

发文量

审稿时长

4 months

期刊介绍： Acoustooptics, atmospheric and ocean optics, atomic and molecular optics, coherence and statistical optics, biooptics, colorimetry, diffraction and gratings, ellipsometry and polarimetry, fiber optics and optical communication, Fourier optics, holography, integrated optics, lasers and their applications, light detectors, light and electron beams, light sources, liquid crystals, medical optics, metamaterials, microoptics, nonlinear optics, optical and electron microscopy, optical computing, optical design and fabrication, optical imaging, optical instrumentation, optical materials, optical measurements, optical modulation, optical properties of solids and thin films, optical sensing, optical systems and their elements, optical trapping, optometry, photoelasticity, photonic crystals, photonic crystal fibers, photonic devices, physical optics, quantum optics, slow and fast light, spectroscopy, storage and processing of optical information, ultrafast optics.