Browsing Faculty of Mathematics and Natural Sciences by Author "Alatas, Husin"
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Caharacteristics of a Metal-Dielectric-Metal slab waveguide with embedded metallodielectric photonic crystal and its optimization at low THz optical frequency
Negara, Teguh P. | Mardanih | Hardhienata, Hendradi | Alatas, Husin (2011)In this paper we report the results of our systematic numerical study on the characteristics of a-metal-dielectric-metal slab waveguide with an embedded ID metallodielectric photonic crystal using finite difference time ... -
Combined solitons in generalized coupled mode equations of a nonlinear optical Bragg grating
Alatas, Husin (2007)We discuss the existence of combined dark and antidark soliton forms or combined solitons in the generalized coupled mode equations of a nonlinear optical Bragg grating. These solitons are not allowed in the conventional ... -
Fabrication and characterization of NO2 gas sensor based on one dimensional photonic crystal for measurement of air pollution index
Maulina, W. | Rahmat, M. | Rustami, E. | Azis, Muhamad | Budiarti, D.R. | Miftah, D.Y.N. | Maniur, A. | Tumanggor, A. | Sukmawati, N. | Alatas, Husin | Seminar, Kudang Boro | Yuwono, Arief Sabdo (2011)We have fabricated the corresponding photonic crystal (PC) structure by means of electron beam evaporation in a sample chamber at a pressure of 10-3 Pa with BK-7 glass substrate at temperatures of 573K. This PC device is ... -
An integrated optical instrumentation for measuring NO2 gas using one dimensional photonic crystal
Rustami, Erus | Azis, Muhamad | Maulina, Wenny | Rahmat, Mamat | Alatas, Husin | Seminar, Kudang Boro (2011)Air pollution is one of main problems in human health, especially in big cities. There are five pollutants material which is indicated as a sources of air pollution, one of them is nitrogen oxide (NO2). The proper environmental ... -
Measuring air pollutant Standard Index (ISPU) with photonics crystal sensor based on wireless sensor network (WSN)
Azis, Muhamad | Rustami, Erus | Maulina, Wenny | Rahmat, Mamat | Alatas, Husin | Seminar, Kudang Boro (2011)Information systems of air pollutant standard index (ISPU) with photonics crystal sensor which consist of three primary section viz station as sensor acquisition of air pollutant, aerver as collecting and data logging, and ... -
New Class Of Bright Spatial Solitons Obtained By Hirota's Method From Generalized Coupled Mode Equations Of Nonlinear Optical Bragg Grating Author(S):
Alatas, Husin | Kandi, A.A. | Iskandar, A.A. | Tjia, M.O. (2008)We have demonstrated by Hirota's bilinear method the existence of a new class of bright spatial soliton solutions from the same model of nonlinear optical Bragg grating considered previously by another group of researchers. ... -
Rational Solitons in Deep Nonlinear Optical Bragg Grating
Alatas, Husin | Iskandar, A.A. | Tjia, M.O. | Valkering, T.P. (2005)We have examined the rational solitons in the Generalized Coupled Mode model for a deep nonlinear Bragg grating. These solitons are the degenerate forms of the ordinary solitons and appear at the transition lines in the ... -
Simple Model for Simulating Characteristics of River Flow Velocity in Large Scale
Alatas, Husin | Prayuda, Dyo D. | Syafiuddin, Achmad | Parlindungan, May | Suhendra, Nurjaman O. | Pawitan, Hidayat (2014) -
Structure dependent variations of group velocity, energy loss and confinement in a regular grated waveguide
Alatas, Husin | Iskandar, Alexander A. | May-on Tjia (2012)The green function method in the Dyson's formulation has been employed for the initio numerical study of structural effects on the device performances in terms of the minimum group velocity, energy loss and energy confinement ... -
The thermal denaturation of the peyrard-bishop model with an external potential
Sulaiman, A. | Zen, F.P. | Alatas, Husin | Handoko, L.T. (2012)The impact of various types of external potential s on the Peyrard-Bishop DNA denaturation is investigated through the statistical mechanics approach. The partition function is obtained using the transfer integral method, ...