Fourier transform spectrometer on silicon with thermo-optic non-linearity and dispersion correction.

ABSTRACT: Miniaturized integrated spectrometers will have unprecedented impact on applications ranging from unmanned aerial vehicles to mobile phones, and silicon photonics promises to deliver compact, cost-effective devices. Mirroring its ubiquitous free-space counterpart, a silicon photonics-based Fourier transform spectrometer (Si-FTS) can bring broadband operation and fine resolution to the chip scale. Here we present the modeling and experimental demonstration of a thermally tuned Si-FTS accounting for dispersion, thermo-optic non-linearity, and thermal expansion. We show how these effects modify the relation between the spectrum and interferogram of a light source and we develop a quantitative correction procedure through calibration with a tunable laser. We retrieve a broadband spectrum (7 TH

SUBMITTER: Souza MCMM 

PROVIDER: S-EPMC5813211 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature