2019 IEEE Photonics Conference (IPC)
A previously reported CMOS-compatible dual avalanche photodiode design is exploited to develop a maximum-likelihood spectral-sensing algorithm, which maps the dual photocurrents to the monochromatic light's wavelength. Optimization over the reverse biases of the two APDs yields a spectral resolution of 10 nm within 440-650 nm.
Hossain, Md. Mottaleb and Hayat, Majeed M., "CMOS Compatible Dual Avalanche Photodiode for Algorithmic Visible Spectral Sensing" (2019). Electrical and Computer Engineering Faculty Research and Publications. 640.