In this study, a wide-band erbium-doped fibre amplifier (EDFA) operating in both C- and L-band wavelength regions is demonstrated based on two-stage and double-pass approaches. The amplifier employs two pieces of 21 and 46 cm long bismuth-based EDFs (Bi-EDFs) optimised for C- and L-band operations, respectively, which are pumped by 1480 nm laser di

Neutron radiation testing was performed on silicon and GaAs diodes to investigate changes in the device parameters after neutron exposure. Californium-252 source was used to irradiate these diodes up to total dose of 1117.87mSv. The effects of nuclear radiation on the forward and reverse current-voltage (I-V) characteristics of Silicon and GaAs dio

In this study, a capacitance-voltage fitting algorithm was developed using four region approximations and fitted against three GaAs mesa diodes. Doping and electric field profile measured and fitted are presented using MATLAB based programming. Results of 4-regions approach gave a better fitting in all the diodes compared to 3-regions approximation

The aim of this research is to investigate the effects of neutron irradiation using Cf-252 neutron source on different types of commercially available Si and GaAs diodes. Pre and post irradiation effects are compared by analyzing their respective forward bias (FB) and reverse bias (RB) current-voltage (I-V) characteristics. It was discovered that,

The aim of this study is to investigate the effects on forward bias characteristics of neutron radiation on various commercially available silicon and GaAs diodes. The diodes were irradiated using the Pneumatic Transfer System (PTS) facility in Malaysian Nuclear Agency with neutron fluences up to 1012 neutron/cm2.s for an exposure time of 1, 3 and

Violence against women occurs in all countries and transcends social, economic, religious, and cultural groups. One of the most common forms of violence against women is violence by their husbands or other intimate male partners. Over the past two decades, violence by an intimate partner has been identified throughout the world as a serious physica

Finding accurate solution of chaotic system by using efficient existing numerical methods is very hard for its complex dynamical behaviors. In this paper, the multistage homotopy-perturbation method MHPM is applied to the Chaotic Genesio system. The MHPM is a simple reliable modification based on an adaptation of the standard homotopy-perturbation

The objectives of this paper are two folds: firstly, to highlight the systematic approach adopted in evaluating an ASP textbook and secondly, to report the status of an ASP textbook "Advanced Media Arabic". for this purpose the paper adopts analytical method, with analyzing Arabic experts' comments and suggestions towards the proposed c

In this paper, the modified homotopy perturbation method is applied for analytical treatment of differential equations. The modified HPM yields an analytical solution in terms of a rapidly convergent infinite power series with easily computable terms. The efficiency of the modified technique is examined by several illustrative examples. In all case

Polyurethane (PU)/nanosilica composite was fabricated and then coated on polyethylene (PE) film using a rod Mayer technique. The silica nanoparticles used have an average particle size of 16 nm, and their weight fractions varied from 0 to 14%. Two different thicknesses of PU/nanosilica coating layer were fabricated, which were 4 and 8 μm. The morp