Different contributions to the CIB power spectrum as predicted by our model, for two different frequency combinations: 217 × 217 GHz (dashed curves), and 1200 × 1200 GHz (solid curves). In both cases, the contribution from early-type (ET) galaxies is in blue, for late-type (LT) galaxies in green and the mixing between the two galaxy populations in orange. The shot noise term is the flat contribution shown in red. The total CIB power spectrum (Eq. 49) is shown in black. The values of the model parameters used to produce these curves are: $log(M_{\min }^{\mathrm{ET}}/{\mathrm{M}}_{\odot }{h}^{-1})=12.07$, $log(M_{\min }^{\mathrm{LT}}/{\mathrm{M}}_{\odot }{h}^{-1})=10.85$, ${\alpha }_{\mathrm{ET}}=1$, ${\alpha }_{\mathrm{LT}}=1$, SN₂₁₇ = 16 and SN₁₂₀₀ = 9833.