In this paper, the design and analysis of a two-dimensional photonic crystal coupled resonating optical waveguide based integrated-optic sensor platform is proposed. The behaviour of designed cavity is analysed by using two-dimensional finite difference time domain (FDTD) method. The sensing capability and quality factor of the designed structure is enhanced by optimizing the surrounding defect of the cavity. Proposed structure shows a quality factor (Q) of about 104 and 0.40 nm average shift in resonance wavelength by changing refractive index in the range of 10−4. Sensing technique is based on the detection of shift in resonance wavelength of cavity in accordance with the change in refractive index of analyte.
Bibliographical noteGenerated from Scopus record by KAUST IRTS on 2023-10-12
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering