On-Chip Si3N4 Spatial Heterodyne Fourier Transform Spectrometer for the Optical Window in Biological Tissue

We designed and demonstrated an on-chip Fourier transform spectrometer on Si
3
N
4
-on-SiO
2
using an array of Mach-Zehnder interferometers (MZIs) for λ = 600~1000 nm. The retrieval of an input spectrum is demonstrated by the interconnect simulation.