Light Combining for Interferometric Switching

Figure 3

Power transfer in the waveguides of the ds-coupler for two equal input signals ((16), (17), and (18), with initial conditions 𝐴₁=1, 𝐴₂=1, Δ𝜙=(0,𝜋/4,(3/4)𝜋,𝜋) in (a), (b), (c), (d), resp.). Magenta dotted-dashed line: amplitude 𝐴₁(𝑐𝑧) and 𝐴₂(𝑐𝑧); black solid line: amplitude 𝐴_𝐷(𝑐𝑧).

(a)

(b)

(c)

(d)