Dispersion of the Kerr effect in nitrobenzene at visible wavelengths; Analysis and interpretation

It is important to determine the dispersion of the Kerr effect in optical fibres for application to fibre communication and fibre sensors; little information on this effect presently exists in the literature. The Kerr coefficient K, has been found to vary with material, wavelength, and temperature. The classical Havelock's Law1 has the form of K = c(n2 - 1)2/E2nλ where λ is the wavelength, c is a material constant and independent of wavelength, n is the refractive index, and E is the applied electric field. Havelock's law appears adequate for some materials. It has been verified experimentally by several investigators.2,3 In order to measure the very small Kerr coefficient for silica optical fibres, the experimental arrangement in Fig. 1 was used. The Kerr coefficient K = dI0/IπlE2 can be measured by detecting the parameters dI0, the light intensity variation, I, the total light intensity, E, the applied electric field, and l, the length of the fibre.

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Giant electro-optic coefficient in a graphene oxide film

Jahanbakhshian¹,

KIANI²,

Pirlar³

et al. 2022

Opt. Lett.

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The electro-optic effect is an important mechanism for actively tuning the refractive index of materials. This effect has various important applications in communication, switching, modulation, and nonlinear optics. This research measured the quadratic electro-optic coefficient for a graphene oxide (GO) film with ellipsometry spectroscopy. The results show that this coefficient is about three orders of magnitude greater than that of other materials. The GO film with its giant electro-optic Kerr coefficient can improve devices based on this effect. For example, it can decrease power consumption and the complexity of these devices due to the need for a lower electric field. In addition, birefringence is obtained of about Δn = 0.08 at 730 nm, which can lead to promising improvements in commercial devices, such as the reduction of working voltage below 10 V.

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Dispersion of the Kerr effect in nitrobenzene at visible wavelengths; Analysis and interpretation

Cited by 3 publications

References 11 publications

Wavelength dispersion of the Kerr effect in optical fibres

Wavelength dispersion of the Kerr effect in optical fibres

Wavelength dispersion of the Kerr effect in optical fibres

Giant electro-optic coefficient in a graphene oxide film

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