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Opt Lett. 2010 Feb 1;35(3):432-4. doi: 10.1364/OL.35.000432.

Ultrahigh resolution spectral analysis based on a Brillouin fiber laser.

Author information

  • 1Laboratoire PhLAM, UMR CNRS 8523, UniversitĂ© des Sciences et Technologies de Lille, 59655 Villeneuve d'Ascq Cedex, France.

Abstract

We report what we believe to be a novel experimental heterodyne technique for the spectral analysis of continuous optical wave sources. The achieved resolution is as low as the kilohertz level, with a dynamic range in excess of 90 dB. The technique is based on a heterodyne detection between the source under test (SUT) and a Brillouin fiber laser generated by this SUT. Contrary to standard self-heterodyne techniques only a few tens of meters of optical fiber is required without the need of any optical modulators. This spectrometer has been used to characterize a distributed-feedback laser diode and a Brillouin fiber laser.

PMID:
20125745
[PubMed]
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