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All Journal International Journal of Advances in Applied Sciences Indonesian Journal of Electrical Engineering and Computer Science
Mohammad Reza Rakhshani
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Earth & Planetary Sciences Environmental Science Materials Science & Nanotechnology Mathematics Physics

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Photonic Crystal Slab Add-Drop Filter Mohammad Reza Rakhshani; Mohammad Ali Mansouri-Birjandi
International Journal of Advances in Applied Sciences Vol 2, No 3: September 2013
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (142.158 KB) | DOI: 10.11591/ijaas.v2.i3.pp133-136

Abstract

A new type of optical add drop filter (ADF) based on slab photonic crystals resonant cavities is proposed. ADF operation is based on coupling between the photonic crystal waveguides. Using the finite difference time domain (FDTD) method and plane wave expansion (PWE) method, the ADF characteristics and band structure of the filter, respectively are obtained. The proposed structure is optimized to work as an ADF. Dropping efficiency at 1560nm and quality factor (Q) of our proposed structure are 90% and 195, respectively. The quantities of quality factor and transmission efficiency are suitable for optical applications. This structure is highly attractive for photonic integrated circuits (PICs).
Tunable Channel Drop Filter using Hexagonal Photonic Crystal Ring Resonators Mohammad Reza Rakhshani; MohammadAli MansouriBirjandi
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 1: January 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

In this paper, we have proposed a tunable two dimensional (2D) photonic crystal (PhC) channel drop filter (CDF) using ring resonators with suitable quality factor (Q) and transmission efficiency; we investigate parameters which have an effect on resonant wavelength in this CDF, such as dielectric constant of inner, coupling, adjacent and whole rods of the structure. Dropping efficiency at the resonance and quality factor of single ring are 90% and 1046, respectively. The footprint of the proposed structure is about 125.6μm2; therefore this structure can be used in the future photonic integrated circuits. DOI: http://dx.doi.org/10.11591/telkomnika.v11i1.1788
Wavelength Demultiplexer using Heterostructure Ring Resonators in Triangular Photonic Crystals Mohammad Reza Rakhshani; Moahmmad Ali Mansouri-Birjandi
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 4: April 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

In this Paper a new type of wavelength demultiplexer using ring resonators in 2D triangular photonic crystal is presented. The designed demultiplexer contents two regions which each own a resonator. Two dielectric constants are used in this demultiplexer. These structures which are called hetero have the capability to be used in wavelength division multiplexing (WDM) systems. The average transferred power for the two output channels is about 93%. The crosstalk between output channels was more than -18.5dB, also the overall size of the structure was about 144µm2 which is so appropriate for fabrication and integration. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2331
Co-Authors Moahmmad Ali Mansouri-Birjandi Mohammad Ali Mansouri-Birjandi MohammadAli MansouriBirjandi