2020/05/16 by Anat Demeter-Finzi, Demeter-Finzi, Anat, Shlomo Ruschin +1
Physics and Astronomy · #Applied Physics (physics.app-ph) #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Optics (physics.optics) #physics.app-ph #physics.ins-det #physics.optics
paper · pdf · doi:10.48550/arxiv.2005.07914
14 pages, 7 figures
arxiv created 2020/05/16 · arxiv updated 2020/05/19
We present a new waveguided-sensing configuration combining the advantages of two effects, namely, two-wave interference and multiple-wave interference in a single sensing device. The sensor is accessed vertically from above by means of a three-port grating, and its readout can be accomplished both in an up-reflective or waveguided mode. The superposition of the two outcoming signals results in a variety of transmission characteristic curves depending on fabrication parameters, which are optimized in order to attain enhanced sensitivity. The sensor is analyzed by means of a simple scattering matrix model and confirmed by full FDTD simulations.