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

Souza, Mario C M M ; Grieco, Andrew ; Frateschi, Newton C ; Fainman, Yeshaiahu

Nature communications, 2018-02, Vol.9 (1), p.665-8, Article 665 [Periódico revisado por pares]

England: Nature Publishing Group

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Fourier transform spectrometer on silicon with thermo-optic non-linearity and dispersion correction
Autor: Souza, Mario C M M ; Grieco, Andrew ; Frateschi, Newton C ; Fainman, Yeshaiahu
Assuntos: Broadband ; Calibration ; Cellular telephones ; Crashworthiness ; Dispersion ; Fabrication ; Fourier transform spectrometers ; Fourier transforms ; Impact strength ; Light sources ; Linearity ; Nonlinearity ; Photonics ; Silicon ; Spectrometers ; Spectroscopy ; Spectrum allocation ; Spectrum analysis ; Thermal expansion ; Tunable lasers ; Unmanned aerial vehicles
É parte de: Nature communications, 2018-02, Vol.9 (1), p.665-8, Article 665
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: 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 THz around 193.4 THz with 0.38-THz resolution consuming 2.5 W per heater) and demonstrate the Si-FTS resilience to fabrication variations-a major advantage for large-scale manufacturing. Providing design flexibility and robustness, the Si-FTS is poised to become a fundamental building block for on-chip spectroscopy.
Editor: England: Nature Publishing Group
Idioma: Inglês

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

Souza, Mario C M M ; Grieco, Andrew ; Frateschi, Newton C ; Fainman, Yeshaiahu

England: Nature Publishing Group

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