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Nonlinear cut-off integrated optical isolator

100%

Gniadek K.

2005

tom Vol. 13, No. 2

147-150

The paper presents a concept of an integrated isolator which operation combines the magnetooptic nonreciprocity and nonlinear effects. The isolator is based on nonreciprocal cut-off of TM modes in magnetooptical planar structure where one layer (e.g. top one) is nonlinear. The power dependence of the propagation constants in such configuration allows for easy control of the nonreciprocal behaviour of the counterpropagating TM modes and nonreciprocal cut-off thickness.

Field-induced structuring and light transmission in a gravitationally stratified ferrosuspension: an application in polymer film viscometry

63%

Shulman Z. P. , Kashevski S. B. , Prokhorov I. V.

tom Vol. 9, no 4

771-779

The dynamics of structuring and light transmission in response to a transverse magnetic field applied to a gravitationally stratified layer of a ferromagnetic suspension is studied numerically and experimentally. The results obtained have been used to substantiate and implement in practice a magnetooptical method of measuring the fluid viscosity in thin films. This method is employed to investigate the viscosity kinetics of a polymer solution in a drying film.