Figure 4
The experimental results of the microsystem.
(a) The micrograph and output spectrum of the MMI coupler when w = 6 μm. (b) The output spectrum of the discrete 1 × 8 AWG. (c) The reflection spectrum of the FBGs. (d) The spectrum of the light reflected by the FBG that enters the 1 × 8 AWG through the coupler.
