Results 1 to 10 of about 57,281 (193)

Ferroelectric Nematic Liquid Crystals Showing High Birefringence [PDF]

Advanced Science
High birefringence nematic liquid crystals are particularly demanded for adaptive optics applications in the infrared spectrum because it enable a thinner cell gap for achieving fast response time and improved diffraction efficiency.
Yaohao Song, Xiang Huang, Xinxin Zhang, Minghui Deng, Satoshi Aya, Mingjun Huang   +5 more
doaj   +4 more sources

High Birefringence Liquid Crystals [PDF]

Crystals, 2013
Liquid crystals, compounds and mixtures with positive dielectric anisotropies are reviewed. The mesogenic properties and physical chemical properties (viscosity, birefringence, refractive indices, dielectric anisotropy and elastic constants) of compounds
Jakub Herman, Przemysław Kula, Roman Dąbrowski   +2 more
doaj   +2 more sources

Fluorination Improves the Electro-Optical Properties of Benzoxazole-Terminated Liquid Crystals in High Birefringence Liquid Crystal Mixtures: Experimental and Theoretical Investigations [PDF]

Molecules, 2023
Aromatic heterocyclic liquid crystal (LC) materials have received much attention from LC chemists for their high birefringence and large dielectric anisotropy, yet few have reported their properties in LC mixtures.
Ran Chen, Zihao Mao, Zhongwei An, Xinbing Chen, Pei Chen   +4 more
doaj   +2 more sources

High Birefringence D-Shaped Germanium-Doped Photonic Crystal Fiber Sensor [PDF]

Micromachines, 2022
In this work, a surface plasmon resonance (SPR) sensor based on a D-shaped germanium-doped photonic crystal fiber (PCF) is proposed. The finite element method (FEM) is introduced to analyze the structure parameters, such as germanium-doped concentration,
Qianhe Zhao, Jin Liu, Haima Yang, Haishan Liu, Guohui Zeng, Bo Huang   +5 more
doaj   +2 more sources

A high birefringence liquid crystal for lenses with large aperture [PDF]

Scientific Reports, 2022
This work presents the application of an experimental nematic liquid crystal (LC) mixture (1929) in a large aperture lens. The LC material is composed of terphenyl and biphenyl derivatives compounds with an isothiocyanate terminal group and fluorinated ...
N. Bennis, T. Jankowski, O. Strzezysz, A. Pakua, D. C. Zografopoulos, P. Perkowski, J. M. Sánchez-Pena, J. M. López-Higuera, J. F. Algorri   +8 more
doaj   +2 more sources

Precise detection of tiny birefringence with accuracy reaching 10−11 level [PDF]

Nature Communications
High-precision birefringence detection is crucial in many fundamental and applied research fields such as chirality detection, optical clocks and quantum information.
Xiliang Zhang, Yanwen Hu, Shiwen Zhou, Zepei Zeng, Guohua Liu, Haolin Lin, Zhen Li, Zhenqiang Chen, Shenhe Fu   +8 more
doaj   +2 more sources

Sagnac ring and photonic crystal fiber structure refractive index sensor with high birefringence and low temperature sensitivity

Frontiers in Physics, 2022
In this paper, a novel refractive index sensor based on photonic crystal fiber and Sagnac ring is studied. The sensor adopts Mach-Zehnder interference principle.
Zhiying Liu, Hao Li, Zhiwen Zhang
doaj   +1 more source

High-birefringent photonic crystal fiber [PDF]

OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171), 2001
A highly birefringent photonic crystal fiber design is analysed. Birefringence up to 10/sup -3/ is found. Random fluctuations in the cladding design are analysed, and the fiber is found to be a feasible polarization maintaining fiber.
Stig Barkou Libori, Jes Broeng, Erik Knudsen, Anders Bjarklev, Harald R. Simonsen   +4 more
openaire   +3 more sources

Hybrid hollow-core polarization-maintaining fiber with high birefringence and wide single mode bandwidth

Results in Physics, 2021
A novel hybrid hollow-core polarization-maintaining fiber is proposed by combining the photonic bandgap mechanism and anti-resonant effect. High birefringence can be achieved by introducing a pair of negative curvature anti-resonant layers into the air ...
Yuru Guo, Xin Wang, Zhen Xing, Shuqin Lou   +3 more
doaj   +1 more source

High birefringence single-polarization composite structured anti-resonant fiber

Results in Physics, 2023
We propose a highly birefringent, single-polarization composite structured anti-resonant fiber (CS-ARF). The proposed CS-ARF has an elliptical core, two symmetrically spaced arrays of elliptical air holes, and a six-tube anti-resonant structure.
Xu'an Liu, Weixuan Luo, Daru Chen, Xiaogang Jiang   +3 more
doaj   +1 more source