Effet kerr optique pdf

Scribd is the worlds largest social reading and publishing site. Optical kerr effect and selffocusing, symmetry in 3rd order susceptibility iit kharagpur july 2018. Under this influence, the sample becomes birefringent, with different indices of refraction for light polarized parallel to or perpendicular to the applied field. The study of the focusing and defocusing case through these congurations allows us to discover new nonlinear behaviors in these fibres. Maxwell equations, which describe the behavior of mesoscopic electromagnetic fields, are not a closed system. Loptique, au contraire, beneficie dune tres longue histoire et son evolution dans les dernieres annees presente des aspects tout a fait originaux. Processus nonlineaires du troisieme ordre effet kerr. The kerr effect, in geometrical optics, is an extension of laws of the light refraction at the time of its propagation in transparent materials with variable refractive indices. Ep23351b1 ep200907442 ep097442a ep23351b1 ep 23351 b1 ep23351 b1 ep 23351b1 ep 200907442 ep200907442 ep 200907442 ep 097442 a ep097442 a ep 097442a ep 23351 b1 ep23351 b1 ep 23351b1 authority ep european patent office prior art keywords zone coupling coefficient coupled beam optical component prior art. John kerr and his effects found in 1877 and 1878 pdf.

Mhz has been measured in a number of optical glasses. Interference of fsbs and kerr effect in a standard highly nonlinear fiber conference paper in proceedings of spie the international society for optical engineering 7917. Sous certaines conditions particulieres, ce dephasage est proportionnel apt. Des hotos qui font illusions authorstream presentation. We show that this polarisation modulation can be used to reduce. In this paper, we study the optical kerr effect theoretically in multimode birefringent optical fibers in connection with the characteristics of the fiber and excitation conditions. Livres physique mp et mpsi pdf precis thermodynamique mpsi.

Walter escoffier 07102009 groupe 1 binome a micheau guillau. Kerr effect simulate consequences of the kerr effect. Mhz has been measured in a number of optical glasses b,n7 a sensitive method. The spectral range of kerr rotation reduces with increasing film thickness, magnetic coupling strength and incident angle. Effet kerr magnetooptique a temperature ambiante dans les. On place une cellule entre polariseur et analyseur croises avec les lignes neutres a 45 du polariseur. Magnetooptical faraday and kerr effects in topological. This effect took lately a considerable importance in the industry of telecommunications with optical fibers. With the rp fiber power software, one can investigate various consequences of the optical kerr effect, e. In physics the magnetooptic kerr effect moke or the surface magnetooptic kerr effect smoke is one of the magnetooptic effects. An apparatus for kerr effect measurements in water and. Please redirect your searches to the new ads modern form or the classic form. Serotonin release music with alpha waves 10 hz binaural beats, healing music, happiness frequency greenred productions relaxing music 2,010. Magneto optical effects in magnetic materials arise due to the optical anisotropy of the materials.

A description is given of equipment for the measurement of the kerr effect in water and other relatively highly conducting media. A regenerator for an optical transmission system comprising a multiplexer 2 combining continuous light with the transmitted signals, characterized in that it comprises an intensity modulator 6 adapted to modulate, by means of a clock, the transmitted signals and continuous light, and a kerr fiber 10 adapted for phasemodulating the transmitted signals. The light intensity dependence of the polarisation of a light pulse propagating along a birefringent fiber is studied. Cmgen physics physicscondensed matter condmatother condmat. We have shown that this value is compatible with the optical kerr constant.

Ppt fibre optique multiplexage en longueur donde fibre. On etudie dans ce tp les modulateurs lineaires a effet kerr. Ostrowsky, effet kerr optique dans une fibre optique birefringente multimode, appl. Effet kerr optique dans une fibre optique birefringente multimode. Chandrasekhar, the mathematical theory of black holes oxford university press 2. Nonlinearite kerr dans les fibres optiques microstructurees. The kerr electrooptic effect, or dc kerr effect, is the special case in which a slowly varying external electric field is applied by, for instance, a voltage on electrodes across the sample material.

It is used in materials science research in devices such as the kerr microscope, to investigate the magnetization structure of materials. Mots cles optique non lineaire diffusion brillouin stimulee fibre optique laser anneau effet kerr onde stokes. We observe experimentally, for a pump power 2 w in the fundamental mode, 70% modulation depth for the probe light with multimodal coupling. It describes the changes to light reflected from a magnetized surface. Effet kerr optique dans une fibre optique birefringente multimode a. The source of this optical anisotropy is the magnetisation m within surface domains which can be influenced by external forces such as magnetic fields.

Effet kerr optique dans une fibre optique birefringente. Cet effet est nonnalement neglige quand leffet lineaire est present. Interference of fsbs and kerr effect in a standard highly. The equipment uses 2 mu s field pulses up to 8 mv m1 in amplitude and is sufficiently sensitive to measure the smallest kerr constants such as that of carbon tetrachloride. Synchonous optical regenerator using intensity modulation. Mouvement artistique fonde sur lillusion doptique qui debute vers 1960. We have verified kerr s law and measured kerr s constant at a frequency of 9227. Certains milieux, ordinairement nonbirefringents, peuvent le devenir sous l. The kerr effect, also called the quadratic electrooptic qeo effect, is a change in the refractive. Interaction laser dans les verres inorganiques et processus optiques non lineaires. Effets non lineaires en optique guidee edp sciences. An apparatus for kerr effect measurements in water and conducting liquids.