The broad-band sensitivity challenge, i.e. to distinguish different types of tissue by their
molecular fingerprints the spectral tissue sensing application requires a high sensitivity over
a broad spectral range (VIS/NIR/SWIR, 400-1700 nm), which is currently only possible by
combining discrete, bulky and costly spectrometers;
This challenge is addressed by realizing a fully-functional, compact, broad-band VIS-NIR-SWIR spectrometer based on discrete optical components like wavelength splitters, multiple segments of diffraction gratings optimized for the different bands and 1- or 2-dimensional Si (VIS-NIR) and InGaAs (SWIR) sensors.