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year 27, Issue 1 (Iranian Nano-Photonic Conference 2020 2020)
ICOP & ICPET _ INPC _ ICOFS 2020, 27(1): 133-135 |
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Azizi B, Hosseini S E. Refractive index sensor based on Vernier-effect and cascaded PANDA and single ring resonators. ICOP & ICPET _ INPC _ ICOFS 2020; 27 (1) :133-135
URL: http://opsi.ir/article-1-2277-en.html
URL: http://opsi.ir/article-1-2277-en.html
1- MSc Student, School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran (Bahram.azizi@shirazu.ac.ir)
2- Associate Professor, School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran
2- Associate Professor, School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran
Abstract: (1429 Views)
A novel optical refractive index sensor is proposed and theoretically investigated by cascading a PANDA and a single ring resonator (RR) based on the Vernier effect. The PANDA acts as a filter in this structure. Also, the RR is a function of the refractive index variation. Therefore, the RR structure acts as a refractive index sensing element in the proposed structure. Detailed modeling and instructions are provided for the design of such devices to increase the sensitivity of optical sensors. These are supposed to be manufactured on platforms compatible with silicon-on-insulator (SOI) complementary metal-oxide-semiconductor (CMOS). It is shown that the proposed sensor reaches ultra-high sensitivity (48.58 µm/RIU), which is more sensitive than the single ring resonator(0.63µm/RIU).
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