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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 : Bionatura

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STUDY OF AN ADD-DROP FILTER USING A SINGLE BRAGG COUPLER Rustam E. Siregar -; Ayi Bahtiar -; A. Abrar -
Bionatura Vol 9, No 3 (2007): Bionatura Nopember 2007
Publisher : Direktorat Sumber Daya Akademik dan Perpustakaan

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Abstract

An add-drop filter that consists of a planar directional coupler with a single Bragg grating in one of its arms was studied. The calculation was based on coupled-mode equations in the form of a matrix equation by considering the studied structure. From the matrix equation, the propagation factors as eigenvalues of the eigenmodes was obtained, while the spatial structures of the eigenmodes are determined by the eigenvectors of the coupling matrix. By use of boundary conditions in individual waveguides, the drop output, return loss and total transmission, respectively, was calculated at the Bragg wavelength of 1550 nm. The results satisfy the requirements for Wavelength Division Multiplexing (WDM) applications.Keywords : Bragg grating, add-drop filter, coupled mode equation, matrix equation
NONLINEAR PHOTONIC CRYSTAL FOR ALL-OPTICAL SWITCHING APPLI Ayi Bahtiar; Yayah Yuliah -; Irwan Ary Dharmawan
Bionatura Vol 9, No 3 (2007): Bionatura Nopember 2007
Publisher : Direktorat Sumber Daya Akademik dan Perpustakaan

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Abstract

An all-optical switching device is a crucial component for developing high speed data transmission and signal processing in telecommunication network. The device is based on nonlinear optical material, whose refractive index depends on light intensity. Recently, photonic crystals have been considerable interest both theoretically and experimentally for optical switching devices. Due to the practical reason, we studied one-dimensional nonlinear photonic crystal for all-optical switching devices. We use transfer matrix method and nonlinear coupled mode equation to determine photonic bandgap and optical switching process. We applied them to different structures: nonlinear Distributed Bragg Reflector (DBR) and nonlinear photonic crystals which has similar linear refractive index but has opposite sign of nonlinear refractive index. By using an appropriate combination of refractive indices, it was found that the first structure can be used for all-optical switching at telecommunication wavelength (1.55 m). The second structure can be used both for all-optical switching and optical limiter at the wavelength of 1 m.Keywords: all-optical switching, optical limiter, nonlinear photonic crystal, transfer matrix, nonlinear coupled mode equation.
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