Figure 6
From: Strip-loaded Mach–Zehnder interferometer for absolute refractive index sensing
Sensing region simulations (a) Confinement factor analysis for different analytes at varying TiO\(_2\) thickness in the sensing region (b) Influence of the TiO\(_2\) thickness and the refractive index of interest on the confinement factor in the sensing region. Electric field distribution at the input of the sensing region (top view) for S-bend length of (c) 40 \(\upmu \)m and (d) 5 \(\upmu \)m, with 15 \(\upmu \)m gap between the arms. (e) Corresponds to a bend of 5 \(\upmu \)m and a gap of 10 \(\upmu \)m.
