10 research outputs found

    Peran Teknologi Informasi Dalam Pengentasan Kemiskinan Di Indonesia

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    A preliminary research on the roles of information can communication technology for poverty alleviation has been done. The research based on analysis of secondary data on ICT access and poverty data during the year 200-2006. It was found that there exist paradoxes where ICT infrastructure mainly concentrated in the capital city and other big cities but poverty mainly concentrated in rural area. These have created complex problem to solve poverty by using ICT. This paper is trying to introduce the roles of ICT and its solution in helping to reduce poverty in Indonesia

    Annealing Effects on Silica Based Optical Waveguides Fabricated by Electron Beam Irradiation

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    Defect in channel waveguide fabricated by e-beam irradiation of PECVD silica-on-silicon films are analyzed by characterizing the propagation constant change due to high temperature annealing. The changes of normalized compaction are also described and the theoretical prediction on the variation of normalized compaction with anneal temperature in isochronal annealing is also provided

    Desain Pandu Gelombang Paralel Terisolasi Dengan Method of Lines

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    Optical directional couplers are fundamental building components for the design ofoptical circuits. The proper treatment of a device that couples the guided modes ofa waveguide with the radiation in free space is particularly difficult because of thecontinuum nature of the radiating modes. The desire of high-density integrationposes additional problems due to the fact that the simplest used couplingstructures need to be quite large. In order to reduce the size of the device we studynon-periodic structures based on air gap isolated directional couplers, for whichadditional degrees of freedom are available. The analysis of this type of structuresrequires a rigorous method for the solution of the field equations. We employ themethod of lines for the computation of such coupler characteristics

    Indikator Faktor Manusia Terhadap Kecelakaan Sepeda Motor

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    With regard to the problem of motorcycle accidents in Indonesia, the human factor is unique and complex factors. In this study, an analysis of the contribution of the indicators of human factor in a motorcycle accident was conducted. The results show that lack of discipline committed by riders and high vehicle speeds contribute to and affect motorcycle accident occurrence significantly. Although not too dominant, the rider emotion, lack of concentration when driving, and lack of maturity also have a significant influence on thespeed of motorcycles

    Disain Directional 3 Db Coupler untuk Sistem Keamanan Transmisi Wdm Fiber Optik

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    Teknologi WDM adalah teknologi transport untuk mengirimkan berbagai jenis file (data, suara, dan video)secara transparan, dengan menggunakan panjang gelombang (wavelength) yang berbeda-beda dalam suatufiber tunggal secara bersamaan. WDM memiliki kemampuan mentransmisikan data dalam jumlah yang besardengan kecepatan yang tinggi 2,5 – 10 Gbps dan dapat diterapkan pada jaringan jarak jauh (long haul) maupunjaringan jarak dekat (short haul). Dengan trafik yang sedemikian besar WDM sangat beresiko mengalami breakdown apabila terjadi gangguan pada jaringan akibat rusaknya fiber. Pada paper ini akan dibahas sebuahrancangan coupler yaitu directional 3dB coupler yang dapat digunakan untuk pengaman transmisi WDM

    Karakteristik Direksional Kopler Menggunakan Teori Moda Tergandeng Dan Method of Lines

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    Single mode directional couplers are key components in many optical communication and sensor applications, including optical power splitting, optical filtering, optical reflecting, wavelength multiplexing/demultiplexing, and optical polarisation splitting. The general basic principle in most directional coupler is that under appropriate conditions light transfer can occur between the two adjacent fiber cores via a mechanism called evanescent wave coupling. When the two cores are put closely together the evanescent field travelling from the throughput fiber reaches the coupled waveguide and excite a mode in it. In this paper we use two approaches in analyzing the properties of directional couplers, namely the coupled mode thery and the method of lines. it is found that the two methods agree very well

    Passive integrated optical devices formed by electron beam irradiation of silica-on-silicon layers

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    SIGLEAvailable from British Library Document Supply Centre-DSC:DX204912 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

    Passive integrated optical devices formed by electron beam irradiation of silica-on-silicon layers

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    SIGLEAvailable from British Library Document Supply Centre-DSC:DX204912 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

    Pengaruh Sensitivitas Suhu dengan Metode Couple-Mode terhadap Fiber Bragg Grating Fiber Optik

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    The characteristics of Fiber Bragg Grating (FBG) related to change of reflection power and wavelength shift in the fiber optic due to changes in temperature. Furthermore, the refractive index alo affects the sensitivity of FBG. Using the Coupled-mode theory, the derivation of mathematical formula can be found to justify the effect of temperature in FBG. Also, the Coupled-mode theory is integrated numerically by the Transfer Matrix method to achieve the final equation of the effect of temperature in FBG. To obtain optimal results, several different parameter values are given to be analyzed. The results show that the temperatures are affecting the wavelength but have no effect on the peak of reflection power. In addition, by increasing the temperature and value of the refractive index will affect the enhancement of the sensitivity of FBG. These characteristics are a good opportunity to produce filters, sensors, or other applications by utilizing the characteristics of temperature in FBG
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