Numerical analysis on effect of graphene on biosensing in metamaterial cladded optical fiber

Efficiency of bio sensor in treating a disease lies in its accuracy, low loss and high speed since diagnosis plays a key role in treating it. A novel biosensor that utilises the advantage of metamaterial and two dimensional materials is designed for such purpose. Graphene incorporated metamaterial cladded optical fiber is simulated to detect various cancerous cells and trophozoite & schizont phase of malaria in visible to near infrared region. The refractive index values of the analytes ranges from 1.36 to 1.402 and the sensitivity of the proposed sensor is calculated using loss value shift. The proposed biosensor reports a maximum sensitivity of 7,500 nm / RIU in detecting skin cell cancer. The effect of metamaterial and different thickness of graphene in cladding is discussed and the sensor shows low loss thus making it a suitable candidate in biosensing.