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Conferences > CLEO_SI > 2023 > STh4G > STh4G.7

Small Spectrometer with Extremely High-resolution (0.07 nm) Realized with an Improved Reconstruction Algorithm

Junnosuke Kokubu, Ryo Sugano, Minoru Ohtsuka, Nobuyuki Yokoyama, Makoto Okano, and Takasumi Tanabe

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Abstract

Spectra are reconstructed by capturing wavelength-specific patterns of localized light in a photonic-crystal-waveguide. We show that real-time reconstruction at a wavelength resolution of 0.07 nm is possible by using low-rank approximation with singular-value-decomposition and regularized-least-squares.

© 2023 The Author(s)

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