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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 26 — Dec. 25, 2006
  • pp: 12670–12678

Picosecond and sub-picosecond flat-top pulse generation using uniform long-period fiber gratings

Y. Park, M. Kulishov, R. Slavík, and J. Azaña  »View Author Affiliations

Optics Express, Vol. 14, Issue 26, pp. 12670-12678 (2006)

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We propose a novel linear filtering scheme based on ultrafast all-optical differentiation for re-shaping of ultrashort pulses generated from a mode-locked laser into flat-top pulses. The technique is demonstrated using simple all-fiber optical filters, more specifically uniform long period fiber gratings (LPGs) operated in transmission. The large bandwidth typical for these fiber filters allows scaling the technique to the sub-picosecond regime. In the experiments reported here, 600-fs and 1.8-ps Gaussian-like optical pulses (@ 1535 nm) have been re-shaped into 1-ps and 3.2-ps flat-top pulses, respectively, using a single 9-cm long uniform LPG.

© 2006 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(230.1950) Optical devices : Diffraction gratings
(320.5540) Ultrafast optics : Pulse shaping
(320.7080) Ultrafast optics : Ultrafast devices

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: October 20, 2006
Revised Manuscript: December 6, 2006
Manuscript Accepted: December 6, 2006
Published: December 22, 2006

Y. Park, M. Kulishov, R. Slavík, and J. Azaña, "Picosecond and sub-picosecond flat-top pulse generation using uniform long-period fiber gratings," Opt. Express 14, 12670-12678 (2006)

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  1. S. J. Kim, T. J. Eom, B. H. Lee, and C. S. Park, "Optical temporal encoding/decoding of short pulses using cascaded long-period fiber gratings," Opt. Express 11, 3034-3040 (2003). [CrossRef] [PubMed]
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