Light Combining for Interferometric Switching

Figure 2

Power transfer in the waveguides of the ds-coupler for one input signal only ((16), (17), and (18), with initial conditions 𝐴₁=1, 𝐴₂=0). Red dashed line: amplitude 𝐴₁(𝑐𝑧); blue dotted-dashed line: amplitude 𝐴₂(𝑐𝑧); black solid line: amplitude 𝐴_𝐷(𝑐𝑧).