Refractive Index Sensor Based on Vernier-Effect and Cascaded Panda and SingleRing Resonators

A novel optical refractive index sensor is proposed and theoretically investigated by cascading apanda and a single ring resonator (rr) based on the vernier effect. the panda acts as a filter in thisstructure. also, the rr is a function of the refractive index variation. therefore, the rr structure acts as arefractive index sensing element in the proposed structure. detailed modeling and instructions are provided forthe design of such devices to increase the sensitivity of optical sensors. these are supposed to be manufacturedon 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 thanthe single ring resonator(0.63μm/riu).

Refractive index sensor based on Vernier-effect and cascaded PANDA and single ring resonators

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).