Integrated multispectral scanner for chlorophyll monitoring

Optical technologies, including multispectral (MSL) and hyperspectral sensors, are becoming increasingly popular because they offer a variety of spectral functionalities with rapid, high-resolution 3D imaging. However, many MSL sensors have large size, weight and power (SWaP), lack the wavelength range flexibility to monitor several different attributes [1] , or operate passively [2] . In agri-food monitoring, portable photonic devices with low-power consumption and a high degree of integration are attracting substantial interest [3] because they can be ubiquitously deployed to form complex sensor networks or support novel application scenarios such as drone monitoring. Moreover, an integrated device offers the potential to add lidar functionality [4] , vastly expanding the applications.