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Akbari L, Abedi K. The Optical Biosensor based on microrings with Add- Drop Structure. ICOP & ICPET _ INPC _ ICOFS 2018; 24 :885-888
URL: http://opsi.ir/article-1-1430-en.html
URL: http://opsi.ir/article-1-1430-en.html
1- Shahid Beheshti University
Abstract: (2392 Views)
In this work, three structures based on optical polymer micro-ring resonators for optical bio-sensors have been investigated that consist of two coupled straight waveguides to one, two, and three Add- Drop micro-ring resonators. The sensitivity of the purposed sensor for the first structure with a ring resonator with a radius of 5 μm is 170 nm / RIU for the second structure with two coupled rings, equal to 153 nm / RIU and the sensitivity of the third structure with three coupled rings 146 nm / RIU are calculated. In comparison with similar configurations for biosensors, in proposed structures, in addition to smaller size, sensitivity to the whole surface and sensitivity to the inner surface of the loop are presented. Also, the capability to measure specific bioparticles and enhanced in selectivity are another feature of the proposed sensors by considering the sensing function of the effect of covering the surface of the smallest structural coupled rings 2 and 3 with the particular analyte acceptor layer.
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