Pigtailed Polymeric Optical Biosensor based on Interferometric Multimode Waveguide and Image Processing

Operating optical biosensors outside laboratories presents a major challenge. This work presents a novel approach by introducing a practical coupling mechanism and using SU-8 polymer to reduce the complexity of the fabrication process. Additionally, software techniques used for detection allow for potential improvements without requiring costly hardware. The limit of detection of the proposed device is 3 × 10
^{− 5}
RIU.