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Related Experiment Videos

[Optical-fiber Fourier transform spectrometer].

Yong Liu1, Bao-sheng Li, Yan Liu

  • 1Key Lab of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China.

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|January 9, 2007
PubMed
Summary
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A new fiber optic Fourier transform spectrometer was developed, replacing bulk optics with fiber components. This novel device accurately measured laser spectra, demonstrating its practical feasibility for spectrum analysis.

Area of Science:

  • Optics and Photonics
  • Interferometry
  • Spectroscopy

Context:

  • Traditional Fourier transform spectrometers often rely on bulk optical components.
  • Integrating optical fibers offers potential advantages in miniaturization and robustness.
  • Mach-Zehnder interferometers are fundamental tools in optical measurements.

Purpose:

  • To develop a novel Fourier transform spectrum analyzer using a single-mode fiber Mach-Zehnder interferometer.
  • To replace bulk optical components with fiber-based equivalents and a piezoelectric fiber stretcher for mirror movement.
  • To demonstrate the feasibility of this fiber optic spectrometer for practical spectrum measurement.

Summary:

  • A fiber optic Fourier transform spectrometer was constructed, utilizing a Mach-Zehnder interferometer with all-fiber components and a piezoelectric fiber stretcher.

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  • The instrument successfully measured the output spectrum of a laser diode below threshold.
  • Experimental results were validated against a conventional grating spectrum analyzer, confirming the device's accuracy.

    • Impact:

    • This work presents a feasible fiber optic alternative to traditional bulk optic Fourier transform spectrometers.
    • The developed spectrometer achieved a spectral resolution of 7 cm⁻¹, with potential for further improvement.
    • This technology could enable more compact and robust spectral analysis systems.