CMOS-compatible reconstructive spectrometers with self-referencing integrated Fabry–Perot resonators

What is it about?

Chunyu You et al. fabricated miniaturized spectrometers, key instruments in analyzing optical spectra, with a resolution of around 2.5 nanometers. The spectrometers are fabricated at the wafer scale using complementary metal-oxide-semiconductor, or CMOS, methods, overcoming a previous hurdle in the development of miniaturized spectrometers. The authors overcame another hurdle, a need for manual tuning of processing algorithm parameters, through a self-adapting algorithm that references Fabry-Perot resonators.

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Photo by David Clode on Unsplash

Photo by David Clode on Unsplash

Why is it important?

This work demonstrates wafer- scale production of universal and robust miniaturized spectrometers with a self- adaptive reconstructive algorithm, signifying its potential for commercialization and extensive interdisciplinary application.