Results 261 to 270 of about 9,261 (301)

Automated birefringence measurement system

Journal of Physics E: Scientific Instruments, 1979
The system has proved itself as an invaluable laboratory tool for the characterisation of the polarisation properties of optical fibres. The system is described and an example is given of the measurements which have been made. The linear birefringence results are accurate to within 0.5 degrees for a wide range of birefringence.
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Birefringence Measurements in Optical Waveguides

Journal of Lightwave Technology, 2013
This paper deals with an experimental nondestructive technique for the measurement of modal birefringence of integrated optical waveguides. The method is based on a magneto-optical perturbation technique combined with a highly sensitive polarimeter. Magneto-optical modal conversion, through the Verdet constant of the waveguides, and its dependence on ...
Jamon, Damien, Royer, François, Parsy, François, Ghibaudo, Elise, Broquin, Jean-Emmanuel   +4 more
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Measurements on birefringent fibres: COST 217 interlaboratory measurement campaign

IEE Proceedings A Science, Measurement and Technology, 1993
An interlaboratory comparison of measurements on three types of commercially available polarisation maintaining fibres was performed in the framework of COST 217. The obtained accuracy and reproducibility for the parameters as the mode field diameter, cutoff wavelength and chromatic dispersion was in the same range for these high birefringent fibres as
Gilgen, H.H., Gisin, Nicolas, Pelayo, J, Villuendas, F, Burgmeijer, J.W., Vobian, J, Röpke, U, Bonnedal, D, Kiiveri, P, Walker, Brian   +9 more
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Birefringence measurement under hydrostatic pressure in twisted highly birefringent fibers

IEEE Transactions on Instrumentation and Measurement, 1995
A new method of birefringence measurement in highly birefringent fibers influenced by hydrostatic pressure conditions up to 100 MPa is presented. The birefringence measurement method is based on twist-induced effects and has never been applied before in a high-pressure environment.
T.R. Wolinski, W.J. Bock
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Birefringence measurement using a photoelastic modulator

Applied Optics, 1979
A high frequency photoelastic modulator is used to measure birefringence. A new method for determining large retardations is described and assessed. Its application permits the measurement of the numerical birefringence without the need to evaluate the fringe order number explicitly.
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Birefringence measurement by the self-compensation method

Applied Optics, 1992
A self-compensation method for measuring the birefringence of an optical material is proposed; an accuracy of ~10−6 is obtained. Only a thin sample is needed in this method.
L, Yi, Z, Yi, S, Xiyu, S, Lianke
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Flow birefringence of microtubules and its relation to birefringence measurements in cells

Cell Motility, 1985
AbstractUnderstanding the molecular basis of mitotic movements in living cells will require correlative experiments on intact cells, cell models, purified tubulin, and perhaps other biopolymers. Birefringence is one assay that is useful in all of these experimental situations.
R, Hard, R D, Allen
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Beat-length measurement of birefringent optical fibers

Optics Letters, 1987
We present a novel technique for the measurement of the beat length of birefringent single-mode fibers based on differential attenuation induced by a metal. The proposed technique is particularly suited for the measurement of local birefringence in polished-fiber semiplates. The technique should also find application in the characterization of polished
K, Thyagarajan, M R, Ramadas, M R, Shenoy   +2 more
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Birefringence measurements in gradient-index rod lenses

Applied Optics, 1999
Stress birefringence can be found in gradient-index (GRIN) materials because they contain a variation in composition. GRIN glass fabricated by ion exchange may contain stress from two different processes. These include a size difference between the exchange and the diffusing ions and a variation in the thermal-expansion coefficient across the gradient ...
J L, Rouke, D T, Moore
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Linear magnetic birefringence measurements of Faraday materials

Physical Review B, 1991
Measured values of the linear magnetic birefringence (Cotton-Mouton) coefficients of several Faraday-active materials (${\mathrm{Tb}}^{3+}$, ${\mathrm{Ce}}^{3+}$, and ${\mathrm{Pr}}^{3+}$ rare-earth composites) are presented. These coefficients are compared with the same coefficients measured for diamagnetic materials: ZnSe, and the liquid solvents ...
, Cho, , Bush, , Mazzoni, , Davis
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