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All Journal Jurnal INKOM Jurnal Elektronika dan Telekomunikasi Makara Journal of Science eProceedings of Engineering
Yusuf Nur Wijayanto, Yusuf Nur
Research Center for Electronic and Telecommunication, Indonesian Institute of Sciences
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

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Fabrication of Polyimide Optical Waveguide on Silicon Dioxide Layer Stacked Silicon Substrate Mahmudin, Dadin; -, Shobih; Daud, Pamungkas; Wijayanto, Yusuf Nur
Jurnal Elektronika dan Telekomunikasi Vol 17, No 2 (2017)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v17.36-41

Abstract

Optical waveguides are important for guiding lightwave from a place to other places. Propagation and insertion losses of the optical waveguides should be considered to be in low values. Recently, optical waveguides with circular structures, which are optical fibers, are used widely for guiding lightwave in long-distance optical communication with very low propagation and insertion losses. Simultaneously, optical waveguides with planar structure are also developed for short distance communication in optical devices. We have reported design and analysis of the planar optical waveguides. In this paper, fabrication of planar optical waveguides using a polyimide material on thin silicon dioxide combined with the silicon substrate is reported. The polyimide material is used for the core of the optical waveguides. The silicon dioxide located on the silicon substrate and the air is used for cladding of the optical waveguides. Fabrication of the optical waveguides such as oxidation, photoresist coating, masking, ultra-violet exposure, and etching was done. The fabricated optical waveguides were characterized physically using a standard microscope and scanning electron microscope (SEM). The fabrication processes and characterization results are reported and discussed in detail.
Design of Rectangular Optical Waveguide on LiTaO3 Crystal Using Thermal Annealled Proton Exchange Methods Wijayanto, Yusuf Nur; Mahmudin, Dadin; Daud, Pamungkas
Jurnal Elektronika dan Telekomunikasi Vol 14, No 1 (2014)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (599.845 KB) | DOI: 10.14203/jet.v14.20-23

Abstract

Optical waveguides are the key component for distributing optical signals with very low propagation loss in optical communication. Several type optical waveguides are established currently such as silica optical fiber. In the planar structure, planar optical waveguides are suitable for implementing to integrated optic applications. In here, rectangular optical waveguides on a planar structure with a LiTaO3 crystal as the substrate are described. The optical waveguides were designed for single mode operation at infrared optical wavelength. The Marcatili method is used for designing by separated the rectangular optical waveguides into two slab optical waveguides. Design rules for the rectangular optical waveguides are discussed in this paper
Microwave and Optical Electric Field Interaction in Microwave Polarization Detector Based on Photonic Technology for EMC Measurement Wijayanto, Yusuf Nur; Murata, Hiroshi; Hermida, I Dewa Putu
Jurnal Elektronika dan Telekomunikasi Vol 16, No 1 (2016)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (317.409 KB) | DOI: 10.14203/jet.v16.7-10

Abstract

We analyze the interaction of microwave and optical electric field in a microwave polarization detector based on photonic technology for Electromagnetic Compatibility (EMC) measurement. The detector consists of two orthogonal optical waveguides and patch antennas embedded with two orthogonal gaps fabricated on an Electro-Optic (EO) crystal. Wireless microwave signals can be received, separated and converted directly to lightwave signals through optical modulation using the proposed detector. This detector operates with no external power supply and with low microwave distortion. Microwave polarization can be identified using the proposed interface. In addition, it enables us to measure the magnitude and phase of the wireless signal simultaneously. The analysis of the device was done and presented at the operation frequency of 26 GHz. The proposed interface can be applied for EMC measurement through the radio-over-fiber link.
Pemandu Gelombang Optik Polimer pada Substrat Silikon Dioksida untuk Panjang Gelombang 1,55 µm Mahmudin, Dadin; Wijayanto, Yusuf Nur
Jurnal Elektronika dan Telekomunikasi Vol 14, No 2 (2014)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (569.108 KB) | DOI: 10.14203/jet.v14.56-60

Abstract

Cahaya dapat dirambatkan dengan efektif melalui pandu gelombang optik untuk aplikasi teknologi komunikasi. Pandu gelombang optik memiliki beberapa struktur seperti struktur melingkar (serat optik) dan struktur planar (pandu gelombang optik persegi).Serat optik pada umumnya digunakan untuk komunikasi jarak jauh dan pandu gelombang optik persegi digunakan untuk komunikasi jarak pendek. Dalam tulisan ini, dibahas pandu gelombang optik persegi dengan menggunakan bahan polimer pada substrat silikon dioksida untuk panjang gelombang optik 1,55 µm. Bahan polimer digunakan sebagai inti (core) dari pandu gelombang optik. Silikon dioksida dan udara digunakan sebagai selubung (cladding). Bahan polimer digunakan sebagai inti karena nilai indeks biasnya lebih besar dibanding material lain yang digunakan sebagai selubung. Analisis pandu gelombang optik dihitung dengan menggunakan software Wolfram Mathematica yang berdasarkan pada metode Marcatili dan persamaan Maxwell. Distribusi medan dan mode dispersi dari pemandu gelombang optik telah diperoleh untuk panjang gelombang optik 1,55 µm. Moda operasi dari pandu gelombang optik dapat dikontrol dengan mengatur ukuran panjang dan lebar dari inti. Analisis dan hasil pandu gelombang optik dibahas secara rinci.Pandu gelombang optik menggunakan bahan polimer pada substrat silikon dioksida dapat digunakan untuk rangkaian optik terpadu dan perangkat penginderaan optik.
Optical Modulator Using Channel Optical Waveguides and Planar Patch-Antennas with Gaps Wijayanto, Yusuf Nur; Murata, Hiroshi; Okamura, Yasuyuki
Jurnal Elektronika dan Telekomunikasi Vol 15, No 2 (2015)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1524.422 KB) | DOI: 10.14203/jet.v15.50-54

Abstract

Optical modulator using channel optical waveguides and planar patch-antennas with gaps on ferroelectric optical crystals were proposed. Basic operations for receiving a wireless microwave signal and directly converting it to a lightwave signal were demonstrated successfully using a prototype device with simple and compact structure. These devices operate with no external power supply and no additional modulation electrode. Therefore the microwave-lightwave conversion with low microwave distortion can be obtained. The advanced microwave-lightwave converters using patch-antennas with a pair of narrow gaps and their applications are also discussed
Design of Asymmetric Parallel-Cascaded Micro-Ring Resonator Using Transfer Matrix and Signal Flow-Graph Methods Mahmudin, Dadin; Daud, Pamungkas; Wijayanto, Yusuf Nur
Jurnal Elektronika dan Telekomunikasi Vol 13, No 1 (2013)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (590.353 KB) | DOI: 10.14203/jet.v13.28-32

Abstract

Asymmetric parallel-cascaded micro-ring resonator (APCMR) is proposed. The proposed device is composed of two or more micro-ring-resonators with different diameter. The proposed device is designed using transfer matrix combined with signal flow graph methods. The designed device with crosstalk less than and equal -10 dB can be obtained by setting coupling coefficient. The proposed device can be used for optical filters and sensors.
Optimasi BTS Untuk Peningkatan Kualitas Jaringan CDMA 2000 Sulistyaningsih, Sulistyaningsih; Oktafiani, Folin; Wijayanto, Yusuf Nur
INKOM Journal Vol 1, No 2 (2007)
Publisher : Pusat Penelitian Informatika - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1642.159 KB) | DOI: 10.14203/j.inkom.15

Abstract

Kualitas layanan jaringan merupakan hal yang sangat penting untuk terus ditingkatkan. Oleh karena itu, perlu dilakukan layanan optimasi BTS yang bertujuan untuk pengoptimalan jaringan.  Kegiatan optimasi jaringan dengan dilakukannya drive test. Begitu data telah terkumpul dari suatu area cakupan tertentu, data akan diproses lebih lanjut dengan software tool terpisah. Maintenance engineer dapat menggunakan data yang telah diproses untuk menganalisa unjuk kerja sistem di daerah tersebut.  Layanan optimasi BTS diharapkan dapat mencapai target yang telah ditentukan untuk pengoptimalan seluruh sel disemua BTS. Kata kunci: optimasi jaringan, optimasi BTS, BTS
Sistem Ground Penetrating Radar untuk Mendeteksi Benda-benda di Bawah Permukaan Tanah Oktafiani, Folin; Sulistyaningsih, Sulistyaningsih; Wijayanto, Yusuf Nur
INKOM Journal Vol 1, No 2 (2007)
Publisher : Pusat Penelitian Informatika - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (695.819 KB) | DOI: 10.14203/j.inkom.11

Abstract

Ground Penetrating Radar (GPR) merupakan suatu alat yang digunakan untuk proses deteksi benda–benda yang terkubur di bawah tanah dengan tingkat kedalaman tertentu, dengan menggunakan gelombang radio. Dalam sistem  GPR peralatan yang digunakan terdiri dari unit kontrol, antena pengirim dan antena penerima, penyimpanan data yang sesuai dan peralatan display. Aplikasi GPR dapat digunakan untuk survey benda-benda yang terpendam di tempat yang dangkal, tempat yang dalam, dan pemeriksaan beton. Keuntungan penggunaan GPR adalah  relatif mudah dilakukan dan tidak  merusak, antena  tidak harus bersentuhan secara langsung dengan permukaan tanah, dengan cara demikian dapat mempermudah dan mempercepat pengukuran. Keterbatasan utama GPR adalah lokasi capaiannya yang spesifik, dan antena GPR secara umum dioptimasi hanya untuk durasi pulsa tertentu. Jadi apabila GPR bekerja dengan impuls yang berbeda memerlukan antena yang berbedaKata kunci : ground penetrating radar, antena,  survey GPR
Pengendali Kecepatan Motor Induksi 3-Phase pada Aplikasi Industri Plastik Hardiati, Sri; Oktafiani, Folin; Pristianto, Joni; Praludi, Teguh; Wijayanto, Yusuf Nur
INKOM Journal Vol 3, No 1-2 (2009)
Publisher : Pusat Penelitian Informatika - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (51.584 KB) | DOI: 10.14203/j.inkom.36

Abstract

A circuit for speed controlling of three phase motor induction was designed and implemented. The circuit is using triac as main of component and supported by diac, diode, and the other passive electronics component. The result is a prototype of the speed controlling circuit. The circuit was implemented in plastic industry for keeping of the plastic yarn, so we can optimize production process and increasing the result as better quality and efficient. Keywords: control, speed , triac, motor induction
Sistem Perlindungan menggunakan Optical Switching pada Tegangan Tinggi Wijayanto, Yusuf Nur; Sulistyaningsih, Sulistyaningsih; Oktafiani, Folin
INKOM Journal Vol 1, No 1 (2007)
Publisher : Pusat Penelitian Informatika - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (95.268 KB) | DOI: 10.14203/j.inkom.7

Abstract

Sistem kontrol arus lemah (DC) dengan sistem logika yang mempunyai level tegangan 0 – 5 V, seperti penggunaan mikrokontroler, interface komputer dan lain-lain. Banyak digunakan dikalangan industri dan perangkat-perangkat rumah tangga. Dalam pengendalian beban dengan sumber tegangan jala-jala listrik seperti 220 Vac, maka diperlukan rangkaian switching sebagai perlidungan sistem kendalinya. Switching dengan teknologi optik menggunakan optoisolator IC MOC3040 lebih menjamin  keamanan rangkaian pengendali dari pengaruh jala-jala listrik dan tidak menimbulkan loncatan bunga api saat saklar terhubung/ terputus, disebabkan terpisahnya aliran arus antara beban dengan rangkaian pengendali oleh penggandeng cahaya tersebut. Sehingga dengan menggunakan rangkaian ini mampu memperkecil kerugian dan bahaya yang ditimbulkan oleh switching jala-jala listrik 220Vac. Kata kunci: Protection, Switching, Optoisolator, MOC3040
Co-Authors -, Shobih Abdul Muis Cahya, Zaid Dadin Mahmudin, Dadin Darmawan, Mochammad Fahreza Daud, Pamungkas Dicky, Gabriel Folin Oktafiani, Folin Hardiati, Sri I Dewa Putu Hermida, I Dewa Putu Isa Anshori Manurung, Robeth Viktoria Murata, Hiroshi Nugroho, Tsani Hendro Okamura, Yasuyuki Pristianto, Joni Sulistyaningsih Sulistyaningsih Taufiqurrahman, Shidqie Taufiqurrohman, Heru Teguh Praludi Topik Teguh Estu, Topik Teguh Wahmisari Priharti