In this paper the transient control using effect of steady and relaxation oscillation in optical fiber based on neural networks and hardware implementation is described. The inherent optical feedback by the backscattered Stokes wave in optical fiber leads to instabilities in the form of optical chaos. The controlling of chaos induced transient instability in Brillouin-active fiber based smart s...

We demonstrate optical bistability in a micrometer-sized silicon ring resonator based on the free-carrier dispersion effect in silicon. We measure the transfer function of the resonator showing a hysteresis loop with an input optical power of less than 10 mW. The influence of the thermal optical effect, which is minimized in the experiment by use of nanosecond pulses, is evaluated theoretically...

In present times, the protection of Optical signal data is becoming very important as large amount of internet data is transferred through Optical fibres. The data can be easily protected by encrypting data before transmission. There many different techniques for optical signal encryption. In this paper, we survey on existing methods used in optical signal encryption. Keywords— Fibre Bragg Grat...

We introduce a new configuration of optical NOR logic gateimplementedby using two symmetric circular shaped photonic crystal ring resonator made of dielectric Indium Phosphide rods in air substrate. The switching behavior of proposed optical gate was analyzed based on beam interference principle and perturbation theory. Numerical calculations were carried out by optiFDTD tool using a 2D FDTD do...

immature nature of optical logic devices and the limitations associated with optical buffering provide significant incentive to reduce the routing complexity and avoid optical domain contentions. This paper examines how the Manhattan Street Network (MSN) may be used to facilitate optical packet switching over arbitrary physical topologies. Several pertinent novel costs are introduced. Simulated...

Optical computing has been pursued for decades as a potential strategy for advancing beyond the fundamental performance limitations of semiconductor-based electronic devices, but feasible on-chip integrated logic units and cascade devices have not been reported. Here we demonstrate that a plasmonic binary NOR gate, a 'universal logic gate', can be realized through cascaded OR and NOT gates in f...

Design of a new intelligent driver assistance system based on traffic sign detection with Persian context is concerned in this paper. The primary aim of this system is to increase the precision of drivers in choosing their path with regard to traffic signs. To achieve this goal, a new framework that implements fuzzy logic was used to detect traffic signs in videos captured along a highway f...

In this paper we present a new fuzzy language for the syntactic description of online handwritten symbols. The proposed language FOHDEL can be extended to describe other image patterns as well. The presented language incorporates the fuzzy logic techniques to describe the syntactic relations of the semantic features extracted from a symbol pattern. The basic idea behind FOHDEL is to have a lang...

We demonstrate all-optical NOT and NOR logic gates at 10Gb/s based on gain modulation of a transverse electric (TE) polarized light in a Fabry-Perot laser diode (FP-LD). An FP-LD shows a gain for a TE-polarized injected probe beam. The gain can be modulated by injection of a pump beam. Using the gain-modulation characteristic, we implemented all-optical NOT and NOR logic gates. We investigate d...