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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 14 — Jul. 5, 2010
  • pp: 15201–15206

Brillouin induced self-heterodyne technique for narrow line width measurement

P. Sevillano, J. Subías, C. Heras, J. Pelayo, and F. Villuendas  »View Author Affiliations

Optics Express, Vol. 18, Issue 14, pp. 15201-15206 (2010)

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A novel technique is introduced for jitter-insensitive sub-KHz resolution linewidth characterization technique in ultra-narrow lasers for optical communication applications. The technique is based on self-heterodyne detection induced by Stimulated Brillouin Scattering (SBS). Non linear SBS drives the heterodyne mixing through optical frequency locking of a narrow tunable laser source and the signal under test, which is modulated in the low frequency range. Due to SBS nature, jitter variations in the optical frequency do not affect the correlation spectra measured with resolution figures up to 300 Hz, without the need for optical delay line as in conventional homodyne correlation techniques.

© 2010 OSA

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(070.4790) Fourier optics and signal processing : Spectrum analysis
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(290.5900) Scattering : Scattering, stimulated Brillouin

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: March 17, 2010
Revised Manuscript: April 21, 2010
Manuscript Accepted: May 5, 2010
Published: July 1, 2010

P. Sevillano, J. Subías, C. Heras, J. Pelayo, and F. Villuendas, "Brillouin induced self-heterodyne technique for narrow line width measurement," Opt. Express 18, 15201-15206 (2010)

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