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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 13 — Jul. 1, 2014
  • pp: 3978–3981

Observation of ∼20  ns group delay in a low-loss apodized fiber Bragg grating

George Skolianos, Martin Bernier, Réal Vallée, and Michel J. F. Digonnet  »View Author Affiliations

Optics Letters, Vol. 39, Issue 13, pp. 3978-3981 (2014)

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We report a record group delay of 19.5 ns (an equivalent group index of 292) measured in a strongly apodized, 2 cm long, femtosecond fiber Bragg grating (FBG). This significant (4-fold) improvement over the previous record results from the presence of a Fabry–Perot arising from the apodization. The measured group-index spectrum is well explained by a model that accounts for the apodized profiles of the index modulation, propagation loss, and birefringence of the grating. The peak power loss inferred from this model is only 0.12m1, which is one of the lowest values reported for an FBG.

© 2014 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(140.4780) Lasers and laser optics : Optical resonators
(230.5750) Optical devices : Resonators
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: April 24, 2014
Revised Manuscript: May 26, 2014
Manuscript Accepted: May 27, 2014
Published: June 27, 2014

Virtual Issues
July 24, 2014 Spotlight on Optics

George Skolianos, Martin Bernier, Réal Vallée, and Michel J. F. Digonnet, "Observation of ∼20  ns group delay in a low-loss apodized fiber Bragg grating," Opt. Lett. 39, 3978-3981 (2014)

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