Publication

Electrostrictive nonlinearity in optical fiber deduced from Brillouin gain measurements

Luc Thévenaz
1998
Conference Papers

Abstract

The nonlinear refractive index has drawn considerable attention these past few years, because it may significantly perturbate long-range propagation of lightwaves in optical fibers. Two main origins to this nonlinearity have been identified: nonresonant electronic nonlinearity and electrostriction. This paper shows that the electrostrictive contribution to the nonlinear refractive index n, may indeed be straightfowardly calculated from Brillouin gain measurements. The Brillouin linear gain g, is dependent on material properties and in particular on the electrostrictive coefficient.

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https://infoscience.epfl.ch/entities/publication/b912b28d-fb6f-40d5-a8df-208112258faa

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Luc Thévenaz
1998
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/b912b28d-fb6f-40d5-a8df-208112258faa

About this result

Related concepts (25)

Optical amplifier

An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Optical amplifiers are important in optical communication and laser physics. They are used as optical repeaters in the long distance fiberoptic cables which carry much of the world's telecommunication links.

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Nonlinear optics (NLO) is the branch of optics that describes the behaviour of light in nonlinear media, that is, media in which the polarization density P responds non-linearly to the electric field E of the light. The non-linearity is typically observed only at very high light intensities (when the electric field of the light is >108 V/m and thus comparable to the atomic electric field of ~1011 V/m) such as those provided by lasers. Above the Schwinger limit, the vacuum itself is expected to become nonlinear.

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Electrostrictive nonlinearity in optical fiber deduced from Brillouin gain measurements

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