fa Refractive index sensor based on Vernier-effect and cascaded PANDA and single ring resonators تخصصی Special پژوهشي Research 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 &micro;m/RIU), which is more sensitive than the single ring resonator(0.63&micro;m/RIU). <div>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 &micro;m/RIU), which is more sensitive than the single ring resonator(0.63&micro;m/RIU).<span dir="RTL"></span></div> Panda, refractive index sensor, ring resonator, Vernier effect. Panda, refractive index sensor, ring resonator, Vernier effect. 133 135 http://opsi.ir/browse.php?a_code=A-10-1-2256&slc_lang=fa&sid=1 Bahram Azizi Bahram Azizi 10031947532846009277 10031947532846009277 No MSc Student, School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran (Bahram.azizi@shirazu.ac.ir) MSc Student, School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran S. Esmail Hosseini S. Esmail Hosseini 10031947532846009278 10031947532846009278 Yes Associate Professor, School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran Associate Professor, School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran