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Design and Simulation of an Eight-Channel Demultiplexer Based on Photonic-Crystal Ring Resonators | ||
| Modeling and Simulation in Electrical and Electronics Engineering | ||
| دوره 4، شماره 4 - شماره پیاپی 18، اسفند 2024، صفحه 33-39 اصل مقاله (767.33 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22075/mseee.2025.37588.1209 | ||
| نویسندگان | ||
| Amir Motiedizaji؛ Saeid Masoumi* ؛ Jamal Beiza؛ Leila Mohammadian | ||
| Department of Electrical Engineering, Shab.C., Islamic Azad University, Shabestar, Iran. | ||
| تاریخ دریافت: 09 اردیبهشت 1404، تاریخ بازنگری: 17 خرداد 1404، تاریخ پذیرش: 26 شهریور 1404 | ||
| چکیده | ||
| In the present study, an eight-channel photonic crystal wavelength demultiplexer is designed for separating eight telecommunication wavelengths: λ₁=1.5552 nm, λ₂= 1.5563 nm, λ₃ =1.5579 nm, λ₄=1.5593 nm, λ₅ =1.5608 nm, λ₆ = 1.5623 nm, λ₇ =1.5638 nm, and λ₈ =1.5653 nm. To this end, a two-dimensional photonic crystal structure composed of circular silicon rods arranged in an air background and fabricated on a silica (SiO₂) substrate is employed. The design and analysis are performed using the Plane Wave Expansion (PWE) method to compute the photonic band structure and guided modes, while the Finite-Difference Time-Domain (FDTD) method is used to calculate transmission efficiency and analyze propagation characteristics during wavelength-selective separation. Ultimately, by optimizing the resonator placement and the radius of point defects, a channel spacing of 1.44 nm and a transmission efficiency (TE) of 93% were achieved. | ||
| کلیدواژه‌ها | ||
| Optical Demultiplexer؛ Channel Spacing؛ Crosstalk؛ Ring Resonator | ||
| مراجع | ||
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