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Optical fiber interferometer array for scanless Fourier-transform spectroscopy.

Aitor V Velasco1, Pavel Cheben, Mirosław Florjańczyk

  • 1Departamento de Óptica, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, Madrid 28040, Spain. avillafr@pdi.ucm.es

Optics Letters
|July 2, 2013
PubMed
Summary
This summary is machine-generated.

We developed a novel fiber optic spectrometer that captures full spectra in one go. This advanced spectroscopy technique corrects for errors and can achieve ultra-high resolution.

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Area of Science:

  • Spectroscopy
  • Optical Engineering
  • Interferometry

Background:

  • Traditional Fourier-transform spectrometers often require scanning elements, limiting speed and complexity.
  • Achieving high spectral resolution can be challenging with existing compact spectroscopic devices.

Purpose of the Study:

  • To introduce a novel spatial heterodyne Fourier-transform spectrometer.
  • To demonstrate a single-shot spectral acquisition method.
  • To present a scalable platform for ultra-high resolution spectroscopy.

Main Methods:

  • Implementation of a spatial heterodyne Fourier-transform spectrometer using an array of optical fiber interferometers.
  • Generation of a wavelength-dependent stationary interferogram.
  • Application of spectral inversion algorithms to correct for fabrication and experimental deviations.

Main Results:

  • The system retrieves the input spectrum in a single shot without scanning elements.
  • Spectral inversion algorithms effectively correct for device imperfections.
  • The spectral resolution is readily scalable by increasing optical fiber path delays.

Conclusions:

  • The developed fiber optic spectrometer offers a high-performance, single-shot spectral acquisition method.
  • The system demonstrates a pathway to surpass current spectroscopy resolution limits.
  • This technology has potential applications in various fields requiring precise spectral analysis.