What is the maximum rate at which information can be transmitted error-free in fibre-optic communication systems? For linear channels, this was established in classic works of Nyquist and Shannon. However, despite the immense practical importance of fibre-optic communications providing for >99% of global data traffic, the channel capacity of optical links remains unknown due to the complexity i...

Nonlinear Magneto-Optic Effects with Ultra-Narrow Widths Dmitry Budker , Valeriy Yashchuk , and Max Zolotorev a Department of Physics, University of California, Berkeley, California 94720-7300 b E. O. Lawrence Berkeley National Laboratory, Berkeley, California 94720 c B. P. Konstantinov Petersburg Nuclear Physics Institute, Gatchina, Russia 188350 Abstract Several dispersion-like features in th...

In the passed half century, great improvements have been achieved to make fiber-optic communication systems overweigh other traditional transmission systems such as coaxial systems in many applications. However, the physical features including optic fiber losses, group velocity dispersion (GVD) and nonlinear effects lead to significant system impairments in fiber-optic communications. The nonli...

The work done in this thesis focuses on the impact of transmission impairments in high speed optical networks. Specifically it focuses on the impact of nonlinear impairments in long haul fiber optic data transmission. Currently deployed fiber optic transmission networks are running on NRZ OOK modulation formats with spectral efficiency of only 1 bit/symbol. To achieve spectral efficiency beyond...

The present paper aims to investigate the coupled nonlinear Schrödinger equation in magneto-optic waveguides having anti-cubic (AC) law nonlinearity. solitons secured with AC nonlinearity are extremely useful fiber-optic transmission technology. Three constructive techniques, namely, $$(G^{\prime }/G)$$ -expansion method, modified simple and extended tanh method utilized find exact soliton solu...

In this work, nonlinear refraction properties of gold (Au) and platinum (Pt) nanoparticles dispersed in the water are reported. The thermally induced effective nonlinear refractive index due to nonlocal heat effect is characterized by Zscan technique with a low power continuous wave (CW) laser at 1064 nm. This allows us to measure thermo-optic coefficient and effective nonlinear refractive inde...

Organic fluorinated materials demonstrate their excellent electro-optic properties and versatility for technological applications. The partial substitution of hydrogen with fluorine in carbon-halides bounds allows the reduction of absorption losses at the telecommunication wavelengths. In these interesting compounds, the electro-optic coefficient was typically induced by a poling procedure. The...

Nonlinear microscopy through flexible fiber-optic catheters has potential in clinical diagnostic applications. Here, we demonstrate a new approach based on wavelength-swept narrowband pulses that permits simple fiber-optic delivery without need of the dispersion management and allows nonmechanical beam scanning. Using 0.86 ps pulses rapidly tuned from 789 nm to 822 nm at a sweep rate of 200 Hz,...