Compact spectrometer based on disordered multi-mode interferometer

Ankit Poudel, Pravin Bhattarai, Rijan Maharjan +3

We demonstrate a compact (40 $\mu$m $\times$ 260 $\mu$m) spectrometer based on multimode interference aided by scattering of light from random SiO${}_2$-filled hole arrays on a silicon-o…