Results 271 to 280 of about 21,925,565 (312)

Vertical‐cavity surface‐emitting laser with integrated surface grating for high birefringence splitting

Electronics Letters, 2019
Increasing the birefringence splitting in single-mode vertical-cavity surface-emitting lasers (VCSELs) enables high-speed polarisation dynamics which can be the basis to overcome the current bandwidth limitations in short-haul data transmission.
T. Pusch, P. Debernardi, M. Lindemann, Frederike Erb, N. Gerhardt, M. Hofmann, R. Michalzik   +6 more
semanticscholar   +1 more source

Novel high birefringence dibenzothiophenylacetylene liquid crystals

Liquid Crystals, 2002
We have designed, synthesized and evaluated dibenzothiophenylacetylene homologues as new heterocyclic molecules which were expected to have high δα values and short wavelength UV absorption spectra. The dibenzothiophenyl acetylene homologues exhibited wide nematic phase ranges and had very high extrapolated δn of over 0.6 and directly measured values ...
Chizu Sekine, Masamitsu Ishitobi, Kazunori Iwakura, Masayoshi Minai, Koichi Fujisawa   +4 more
openaire   +1 more source

ChemInform Abstract: High Birefringence Liquid Crystals

ChemInform, 2014
AbstractReview: 133 refs.
Roman Dabrowski, Przemyslaw Kula, Jakub Herman   +2 more
openaire   +1 more source

UV Stable High Birefringence Liquid Crystals

Japanese Journal of Applied Physics, 2004
High birefringence and low viscosity nematic liquid crystal single compounds and mixtures were developed and their properties evaluated. The UV stability of the single isothiocyanianes liquid crystal compounds was studied by different methods. Excellent UV durability of some of the single high birefringence isothiocyanianes was discovered.
Gauza, Sebastian, Wen, Chien Hui, Tan, Bijun, Wu, Shin Tson   +3 more
openaire   +2 more sources

High Birefringence Optical Fibre Pressure Sensor

SPIE Proceedings, 1988
A remote passive pressure sensor has been demonstrated using a high birefringence optical fibre. The principle is based upon a single fibre polarimetric interferometer and the technique for aligning the birefringence axes of the fibre. The design incorporates a temperature compensation and allows the use of low coherence sources.
M. Farhadiroushan, I. P. Giles
openaire   +1 more source

High Birefringence Isothiocyanato Tolane Liquid Crystals

Japanese Journal of Applied Physics, 2003
The phase transition temperatures, birefringence and visco-elastic coefficient of several high birefringence isothiocyanato tolane compounds were evaluated. The polarizability of these compounds was calculated by the Austin Model 1 (AM1) and Modified Neglect of Diatomic Overlap (MNDO) methods.
Sebastian Gauza, Haiying Wang, Chien-Hui Wen, Shin-Tson Wu, Alexander J. Seed, Roman D\cabrowski   +5 more
openaire   +2 more sources

High birefringence terahertz photonic crystal fiber

Optical Engineering, 2013
A new high birefringence terahertz photonic crystal fiber is pro- posed. The properties of birefringence, confinement loss, and chromatic dispersion are studied by using full-vector finite-element methods with an anisotropic perfectly matched layers absorption boundary condition. The cladding contains several periodically arranged diamond-shaped units,
Jian Tang, Zhigang Zhang, Deng Luo, Ming Chen, Hui Chen   +4 more
openaire   +1 more source

Design of high birefringence stress-induced polarization-maintaining fiber based on utilizing geometrical birefringence

, 2019
Considering the utilizing of geometrical birefringence, we propose a new type of stress-induced polarization-maintaining fiber (PMF) with a ‘leaf-shaped’ core —a structure found by combining the merits of elliptical and rhombic core shapes.
Haoyu Li, Xuyou Li, Yue Zhang, Pan Liu, Hanrui Yang   +4 more
semanticscholar   +1 more source

Optical envelope soliton solutions for coupled nonlinear Schrödinger equations applicable to high birefringence fibers

Optik (Stuttgart), 2022
A. Wazwaz, W. Albalawi, S. El-Tantawy
semanticscholar   +1 more source

The dynamic birefringence of high polymers

Journal of Polymer Science Part B: Polymer Physics, 1962
AbstractThe simultaneous measurement of the birefringence and strain of a sample subjected to sinusoidal strain is proposed as a means for elucidating the molecular mechanism of the response of high polymers to mechanical deformation. A linear phenomenological theory is proposed in which strain‐optical coefficient distribution functions are assigned to
Richard S. Stein, Shigeharu Onogi, Daniel A. Keedy   +2 more
openaire   +1 more source