Analysis of the wavefront aberrations based on neural networks processing of the interferograms with a conical reference beam

SN Khonina, PA Khorin, PG Serafimovich, AP Dzyuba… - Applied Physics B, 2022 - Springer
Recently, intelligent data analysis and neural networks are increasingly used to detect the
wavefront by interferograms and digital holograms. In this case, there is significant freedom …

Thermal diffusion technique for in-fiber discrete waveguide manipulation and modification: A tutorial

L Meng, G Chen, D Wang… - Journal of Lightwave …, 2020 - ieeexplore.ieee.org
Thermal diffusion is the phenomenon of the migration of dopants in an optical fiber during
high-temperature treatment. Research on the theory and technique of optical fiber thermal …

Reconstruction of 3D refractive index profiles of PM PANDA optical fiber using digital holographic method

HH Wahba - Optical Fiber Technology, 2014 - Elsevier
In this paper, the refractive indices distributions on the two birefringent axes of polarization
maintaining (PM) PANDA type optical fiber are reconstructed. The local refraction of the …

3D refractive index measurements of special optical fibers

C Yan, SJ Huang, Z Miao, Z Chang, JZ Zeng… - Optical Fiber …, 2016 - Elsevier
A digital holographic microscopic chromatography-based approach with considerably
improved accuracy, simplified configuration and performance stability is proposed to …

Optical phase retrieving of a projected object by employing a differentiation of a single pattern of two-beam interference

WA Ramadan, AS El-Tawargy, HH Wahba - Scientific Reports, 2023 - nature.com
In this work, we present a new approach to retrieve the optical phase map of an object which
is projected by a single differentiated two-beam interference pattern. This approach is based …

Two-dimensional refractive index and birefringence profiles of a graded index bent optical fibre

WA Ramadan, HH Wahba, MAS El-Din - Optical Fiber Technology, 2017 - Elsevier
A theory to recover refractive index profile of the bent graded index (GRIN) optical fibre, in
core region, is proposed. This theory is applied to the bent GRIN optical fibre when it is …

Femtosecond laser direct writing large-area fiber Bragg grating based on diaphragm shaping

C Gao, R Zhao, B Wu, H Li, X Ye, M Wang, X Xu… - Optics …, 2024 - opg.optica.org
We propose and demonstrate a new method of direct writing large-area fiber Bragg grating
by femtosecond laser through the coating. By adding an adjustable diaphragm before the …

Optical fibers profiling using interferometric and digital holographic methods

H Wahba, W Ramadan, A El-Tawargy - Optical Fiber …, 2020 - books.google.com
Optical fibers are extensively used in modern technology such as sensing, shortdistance
and long-distance telecommunications. This motivated many researchers to present different …

[PDF][PDF] 基于数字全息图的光纤折射率测量研究

谷婷婷, 黄素娟, 闫成, 缪庄, 常征, 王廷云 - 物理学报, 2015 - wulixb.iphy.ac.cn
利用数字全息显微层析技术构建了光纤折射率测量的测试系统, 包括光路系统与软件系统.
以物光波的相位分布曲线为依据由CCD 记录最优的数字全息图; 在优化频谱图的基础之上对 …

A simple refractive index measurement method for step-index fiber based on radial displacement optical power scan

S Zhang, H Guo, X Liu, P Wang, Z Wang, Y Liu - Optics Communications, 2023 - Elsevier
In this paper, a novel method for measuring the refractive index of single-mode step-index
fiber based on radial displacement optical power scan is proposed. The radial displacement …