Habib Khoshsima

Abstract: Abstract An all optical encoder based triangular lattice shape photonic crystal (PC) is proposed. The device is composed of two ring resonator waveguides and two OR gate with four input ports waveguides and two output ports waveguides in triangular lattice shape PC. The band diagram of base PC structure calculated by plane wave expansion (PWE) method. Also, transmission and distribution of electrical field behaviors of the proposed device are verified by two dimensional finite difference time domain (2D-FDTD) method. The proposed 4 × 2 encoder can operate at third communication window range, considering definitions of logic 0 and 1 being the normalized transmission as less than 3% and greater than 95% respectively. Despite the nonlinear encoders, in our case, due to the non-use of non-linear effects such as Kerr effect, low input power required for encoder.

TL;DR: In this paper, the diffusion anisotropy of C.I. Disperse Red 1 (2-(ethyl(4-((4-nitrophenyl)azo)phenyl)amino)ethanol) in a nematic liquid crystal mixture (1294-1b) was studied using real-time diffractionmonitoring.

TL;DR: In this article, a new tolane-base liquid crystal, 4'-heptyl-3-fluoro-4-isothiocyanatotolane (7TOLF), and a biphenyl-base nematogen, 7BF, have been investigated for the first time to determine their electro-optical behavior and third order non-linearity using the static Kerr effect method.

TL;DR: In this paper, the behavior of optical bistability and multistability in a four-level atomic system involving a Rydberg state illuminated by a probe field as well as control and switching laser beams of larger intensity was investigated.

TL;DR: This work reports 8 to 3 optical binary encoder based on linear effects which greatly reduces the input power requirement and maximum switching delay and total footprint.