Early stage detection of breast cancer using hybrid photonic crystal ring resonator

Photonic crystal biosensors are highly sensitive devices for detection and analysis of bio-analytes that combines biological components with a physicochemical detector using phonon vibrations. Early stage cancer cell detection is currently the need of the hour. In this paper we have demonstrated a 2-dimensional hybrid photonic crystal ring resonator based biosensor with point and line defect which can detect early stage breast cancer. Simulation and analysis has been done normal and breast cancer cell and the intensity levels of transmission spectrum have been observed. Finite Difference Time Domain (FDTD) method has been used for the analysis. MEEP simulation tools have been used for modeling and designing of hybrid photonic crystal ring resonator. It has been observed from the band structure that for little change in refractive index (RI) there will be a significant shift in the frequency and hence it acts as a sensor. This indicates that it is highly sensitive for the change in refractive index and thus it can differentiate normal and breast cancer cell.