OT7.37 - Optical Sensing with Picometer-level Precision using an Integrated Multispectral Chip

max 6 lines of text, no symbols): Optical sensors enable remote measurement at high-precision, but the need for expensive readout equipment, such as a spectrometer, hampers their practical application.To overcome this limitation, we propose multispectral readout as an alternative approach for sensor readout, using a small number of photodetectors in an integrated chip.We demonstrate this concept using a multispectral chip with four photodetectors, reaching a wavelength imprecision of 5 pm for refractive index sensing and biosensing.