T-shaped channel drop filter based on photonic crystal ring resonator

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...

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Bibliographic Details
Published in:Optik (Stuttgart) 2014-09, Vol.125 (18), p.5348-5351
Main Authors: Alipour-Banaei, Hamed, Jahanara, Mahsa, Mehdizadeh, Farhad
Format: Article
Language:English
Subjects:
Band gap
Filter
Photonic crystal
Quality factor
Ring resonator
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Summary: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 1551nm, 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 242.4μm2, which makes it suitable for all optical integrated circuits.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2014.06.056