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All Journal Bionatura POSITRON JFA (Jurnal Fisika dan Aplikasinya) Spektra: Jurnal Fisika dan Aplikasinya Jurnal Material dan Energi Indonesia Jurnal Ilmu dan Inovasi Fisika
Ayi Bahtiar
Universitas Padjadjaran
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Electrical & Electronics Engineering Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics

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Journal : JFA (Jurnal Fisika dan Aplikasinya)

 1 
Study of Linearly Chirped 1-Dimensional Bragg Gratings Using Confluent Hypergeometric Function Ayi Bahtiar; Rustam Efendi Siregar
Jurnal Fisika dan Aplikasinya Vol 4, No 2 (2008)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (258.356 KB) | DOI: 10.12962/j24604682.v4i2.953

Abstract

A finite one-dimensional, linearly Bragg grating with chirp parameter C and index modulation depth n1 or coupling constant / n1is considered for numerical analysis of its performances by converting its coupled equations into a confluent hypergeometric equation. The operational parameters considered for the analysis consist of the group delay, the reflectance (R), the reflectance ripple (RR), the reflectance bandwidth (BW) and the group delay ripple (GDR). It is shown that increasing C leads to decreasing GDR and increasing BWwhich are favorable to the device performance. However, the RR is relatively unaffected while R suffers from an undesirable diminution. On the other hand, increasing results in the enhancement of R and BW while reducing RR when is increased beyond a certain turning point. But these are attained at the expense on enlarged GDR. The results of this study clearly points to the need of compromising between C and for the optimal operation of the device.
Efek Jenis Pelarut pada Sifat Optik, Morfologi Permukaan dan Koefisien Waveguide Loss dari Pandu Gelombang Planar Polimer Terkonjugasi MEH-PPV Ayi Bahtiar; Yeni Kurniawati; Fitrilawati Fitrilawati; Yayah Yuliah; I Made Joni
Jurnal Fisika dan Aplikasinya Vol 4, No 1 (2008)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (163.31 KB) | DOI: 10.12962/j24604682.v4i1.944

Abstract

Dalam tulisan ini dilaporkan studi efek jenis pelarut pada sifat optik, morfologi permukaan dan koefisien waveguide loss gw dari pandu gelombang planar polimer MEH-PPV. Pandu gelombang planar dibuat dengan teknik spin-coating dari larutan polimer dengan pelarut toluen, kloroform dan THF. Hasil studi menunjukkan bahwa sifat optik dan morfologi permukaan film MEH-PPV dipengaruhi oleh jenis pelarut yang digunakan.Film dengan pelarut toluen dan kloroform mempunyai morfologi permukaan yang homogen, akibatnya nilai gw lebih kecil dari 1 dB/cm. Sedangkan pelarut THF membentuk tekstur di permukaan film MEH-PPV karena agregasi rantai polimer, sehingga nilai gw menjadi besar.
Co-Authors A. Abrar - Annisa Aprilia ARIF BAGUS PRAKOSO CHOIRY GHINA AFRILIA Choiry Ghina Afrilia Davi Putri Hanavi Diyan Unmu Dzujah Edward Simanjuntak Euis Siti Nurazizah Euis Siti Nurazizah, Euis Fitrilawati Fitrilawati Hanipah, Iip HERI FERNANDO I Made Joni Irwan Ary Dharmawan Istiqamah Nurul Hikmah Jedija Monandang Aurellia Khairul Habibie KHAIRUL HABIBIE Lusi Safriani LUTFI NAUFAL RAMADHIKA Marcelina, Vika Maria Oktaviani MARIA OKTAVIANI MARIA OKTAVIANI, MARIA Mariah Kartawidjaja Nabila Asy Syifa Nabila Asy Syifa, Nabila Norman Syakir Norman Syakir Norman Syakir, Norman NUR APRILIA AMANDA RAHMAT HIDAYAT RESTI RAHAYU DWI AGUSTINI RISDIANA RISDIANA Risdiana Risdiana RISDIANA RISDIANA, RISDIANA RIZKIA MUTIARA Rossyaila Matsna Muslimawati Rustam E. Siregar - Rustam Efendi Siregar Sahrul Hidayat Satria Auffa SATRIA AUFFA D U SATRIA AUFFA D U, SATRIA AUFFA Siregar, R.E Sri Suryaningsih Titis Amelia Togar Saragi, Togar Tuti Susilawati TUTI SUSILAWATI Tuti Susilawati Unmu Dzujah, Diyan Vika Marcelina Yayah Yuliah Yayah Yuliah - Yeni Kurniawati Yonatan R Purba YONATAN R PURBA YONATAN R PURBA, YONATAN R Yuli Sartika YULIASARI, FITRI