| Popis: |
We present a multichannel sensor for the simultaneous monitoring of three different samples. established from a one-dimensional photonic crystal, this device is formed by an alternating layer of silicon dioxide (SiO2) and titanium dioxide (TiO2) with three defect layers containing the samples to be monitored. Numerical studies claim that three transmission peaks appear in the bandgap, these transmission peaks are caused by the three samples infiltrated in the defect layers. In real-time detection purposes, it is possible to exploit these transmission peaks. In addition, peak frequencies have the advantage of being susceptible to sample concentrations. With this photonic structure, a sensitivity of 800 nm per unit of refractive index (RIU) is reached. |
