Figure 2: Classical characterisation of integrated circuit elements.
From: Multiphoton quantum interference in a multiport integrated photonic device
(a,b) Charge-coupled device (CCD) images of light scattered in the transverse direction from the waveguide when light is coupled into the bottom (a) and top (b) input of a beam splitter. Red arrows denote the direction of propagation of the light. The white box denotes the integration region at the output for the ratiometric analysis. (c) The integrated intensity is used as part of a ratiometeric analysis to determine η8=0.55±0.02. (d) Interference fringe produced by scanning φ1. The parameter values obtained from the theoretical fit (red line) include the zero-voltage phase offset.
