Figure 1: Structure and band diagram of the Hermitian straight photonic lattice.
From: Experimental realization of Bloch oscillations in a parity-time synthetic silicon photonic lattice
(a) Schematic of the photonic lattice consisting of an array of straight SOI waveguides. All SOI waveguides are stripe waveguides 400 nm wide and 220 nm thick and the array period is 500 nm. The individual SOI waveguide has a propagation constant k=neffk0=2.114k0, while the adjacent SOI waveguides have a coupling coefficient κ=0.157 μm−1 in this lattice configuration. (b) The band diagram for this photonic lattice. Blue and red curves represent the real and imaginary parts of the longitudinal propagation constants, respectively.
