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Usman Malik
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Komunikasi Fisika Indonesia
Published by Universitas Riau
ISSN : 14122960     EISSN : 2579521X     DOI : 10.31258/jkfi
Core Subject : Science, Engineering,
Earth & Planetary Sciences Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics
KFI mempublikasikan artikel hasil penelitian dan review pada bidang fisika, namun tidak terbatas, yang meliputi fisika murni, geofisika, plasma, optik dan fotonik, instrumentasi, dan elektronika, dan fisika terapan (aplikasi fisika).
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol 10, No 6 (2013)" : 5 Documents clear
SOLITON TRAPPED IN 2X2 DIRECTIONAL FIBER COUPLER Dedi Irawan; Saktioto '; H.M. Hairi; Jalil Ali
Komunikasi Fisika Indonesia Vol 10, No 6 (2013)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (489.733 KB) | DOI: 10.31258/jkfi.10.6.446-451

Abstract

The study of soliton trapped in 2X2 directional fiber coupler is reported. By introducing an optical signal with high intensity into two cores of directional fiber coupler will create the soliton pulse in that coupling region. Soliton can carry the data in an extended distance without distortion with high-speed, so that it is promising an ideal communication system in a long distance. In its propagation, the loss was still appears. It is caused by the trapping of soliton pulses at the coupling region so that the collision take placed.The collision of two coupled solitons was determined from the Non-linear Schroodinger Equation (NLSE) based on the Coupling Mode Theory (CMT). The distance of collision can be reduced by decreasing the separation of the two soliton pulses. Another way can be done by choosing a value of medium misalignment saturation H. for the value of H=0.1, it can be seen clearly that length of pulse propagating more broaden. The relationship between the amplitude and width of a soliton is also investigated. It is found that increasing the width, the amplitude also increases. However, the knowledge of collision between two trapped solitonsis important and promises a good application forthe optical switching.
A DESIGN OF TWISTED DOUBLE CHANNEL SCISSORS FOR OPTICAL FILTER H. M. Hairi; T. Saktioto; Dedi Irawan; J. Ali
Komunikasi Fisika Indonesia Vol 10, No 6 (2013)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.616 KB) | DOI: 10.31258/jkfi.10.6.452-459

Abstract

Microring resonators have emerged in the past few years in integrated optics and have been used extensively in many fields due to its advantages. The response from coupled ring resonators can be custom designed by the use of different coupling configurations [1]. In certain cases, ring resonators can be used as wavelength filter when the wavelength fits a whole multiple times in the circumference of the ring [5,6]. In this paper, we compare and contrast the effect of light propagation/ power distribution characteristics associated with ring configurations. We have limited our study to side-coupled integrated space sequence of resonators or as known as SCISSORs using OptiFDTD Photonics Simulation Software V8.0.
KINEMATIC MOTION OF POSITIVE CARBON ION SPECIES: A PROPOSAL METHOD M.S. Roslana; Saktioto '; J. Ali
Komunikasi Fisika Indonesia Vol 10, No 6 (2013)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (453.816 KB) | DOI: 10.31258/jkfi.10.6.460-466

Abstract

The ion carbon species are massively produced througharc plasma for synthesizing carbon nanotube. Positive ions would have tendencies to move towards the negative charged cathode. The moving of the massive ions generated electric field in direction parallel with the ion movement. In this paper, we discuss the particle collisions subsequently resulting a new carbon species namely carbon nanotube (CNT) composed from single/many graphene layer rolled up alike nanostraw structure.
PENGARUH INTI KOIL TERHADAP TEGANGANINDUKTOR DAN RESISTOR YANG DIRANGKAI SECARA SERI Salomo '; Erwin '; Surya Ningsih
Komunikasi Fisika Indonesia Vol 10, No 6 (2013)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (448.302 KB) | DOI: 10.31258/jkfi.10.6.467-475

Abstract

Telah dibuat koil (solenoida) dan inti koil yang bervariasi. Koil divariasikan dengan jumlah lilitan: 50 lilitan, 100 lilitan, 150 lilitan dengan panjang 5 cm dan diameter 3,5 cm, sedangkan inti koil divariasikan dari beberapa material seperti Fe (besi), Cu (tembaga), dan Al (aluminium) dengan panjang 5 cm dan diameter 3 cm. Koil ini dirangkai secara seri dengan resistor yang memiliki resistansi 150 Ω, sumber tegangan dan saklar, kemudian dilakukan pengukuran tegangan induktor dan resistor pada koil. Pengukuran ini dilakukan untuk koil tanpa inti dan koil dengan tambahan inti Fe, Al, serta Cu. Berdasarkan hasil pengukuran diperoleh tegangan induktor menurun seiring pertambahan waktu, besarnya tegangan tersebut juga dipengaruhi oleh medan magnet koil. Penambahan inti Fe pada koil 150 lilitan menghasilkan tegangan induktor sebesar 2,54 volt saat t = 5 detik, sedangkan penambahan inti Cu menghasilkan tegangan induktor sebesar 0,42 volt pada waktu yang sama. Tegangan resistor pada koil 100 lilitan dengan inti Fe adalah 0,21 volt pada t = 5 detik, namun begitu intinya diganti dengan Cu tegangannya menjadi 2.42 volt. Ini berarti koil dengan medan magnet besar akan menghasilkan tegangan induktor yang besar sedangkan tegangan resistor utuk koil dengan medan magnet besar akan bernilai kecil.
TEKNOLOGI ALAT PENGERING SURYA UNTUK HASIL PERTANIAN MENGGUNAKAN KOLEKTOR BERPENUTUP MIRING Maksi Ginting; Salomo '; Egi Yuliora
Komunikasi Fisika Indonesia Vol 10, No 6 (2013)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.55 KB) | DOI: 10.31258/jkfi.10.6.476-482

Abstract

Sistem pengering tenaga surya ini digunakan untuk mengerigkan singkong yang telah diiris membujur setebal 2mm. pada penelitian ini sebagai pengumpul utama panas adalah kolektor berpenutup miring yang dihubungkan keruang pengering. Udara panas dikolektor bergerak keruang pengering dan dipercepat oleh ventilator. Penelitian ini dilakukan pada saat ruang pengering dalam keadaan kosong suhu terendah 42.50C terjadi pada dulang 3 saat jam 09.00 WIB dan tertinggi 50.50C di dulang 2 pada jam 12.00 WIB. Bahan yang dikeringkan adalah 500 gr singkong dengan kandungan air 56.1 %. Massa bahan didalam ruang pengering setelah tiga hari pengamatan adalah 219.5 gr dengan kandungan air 2.73 % dan diluar ruang pengering bermassa 241.8 gr dengan kandungan air 5.9 %.

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