T-shaped channel drop filter based on photonic crystal ring resonator |
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| Authors: | Hamed Alipour-Banaei Mahsa Jahanara Farhad Mehdizadeh |
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| Institution: | 1. Department of Electronics, College of Engineering, Tabriz Branch,Islamic Azad University, Tabriz, Iran;2. Department of Electrical Engineering, College of Engineering, Ahar Branch, Islamic Azad University, Ahar, Iran;3. Young Researchers and Elite Club, Urmia Branch, Islamic Azad University, Urmia, Iran |
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| Abstract: | Photonic crystal ring resonators are promising candidates for realizing all optical filters with acceptable transmission efficiency and quality factor values. In this paper, by putting a12-fold quasi crystal at the middle of on 7 × 7 square cavity we created a ring resonator structure and designed a T-shaped channel drop filter. The drop wavelength of our filter is at 1551 nm, with transmission efficiency and quality factor equal to 90% and 387. Our structure is composed of dielectric rods immersed in air. Because in this kind of structures the dominant band gap is in TM mode, all of our simulations have been done in TM mode. The total footprint of our filter is 242.4 μm2, which makes it suitable for all optical integrated circuits. |
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| Keywords: | Photonic crystal Ring resonator Filter Quality factor Band gap |
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