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Design of an Eight-Channel Demultiplexer Based on Photonic-Crystal Ring Resonators | ||
| Modeling and Simulation in Electrical and Electronics Engineering | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 26 شهریور 1404 | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22075/mseee.2025.37588.1209 | ||
| نویسندگان | ||
| amir motie dizaji* ؛ 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 the separation of 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 2D 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 the transmission efficiency and to analyze the propagation characteristics during wavelength-selective separation. Ultimately, by optimizing the resonator placement and the radius of the 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 | ||
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