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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 5 — Feb. 28, 2011
  • pp: 3996–4001

Dual-wavelength step-like pulses in an ultra-large negative-dispersion fiber laser

Dong Mao, Xueming Liu, Leiran Wang, Hua Lu, and Lina Duan  »View Author Affiliations

Optics Express, Vol. 19, Issue 5, pp. 3996-4001 (2011)

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We report on experimental observation of dual-wavelength step-like pulses delivered from an erbium-doped fiber laser operating in ultra-large negative-dispersion regime. The step-like pulses consist of two rectangular pulses with different energies, durations as well as optical spectra, and are distinct from the conventional multi-solitons or bound-state solitons in that each pulse holds the same property. We find the weaker (or stronger) rectangular pulse in step-like pulses is more sensitive to the backward (or forward) pump while is less sensitive to the forward (or backward) pump. Our results demonstrate that the dual-wavelength operation results from the combination of fiber dispersion, fiber birefringence, as well as cavity filtering effect, and the intensity difference between rectangular pulses can be attributed to different gain characteristics of the forward and backward pump.

© 2011 OSA

OCIS Codes
(060.5530) Fiber optics and optical communications : Pulse propagation and temporal solitons
(140.4050) Lasers and laser optics : Mode-locked lasers
(060.3510) Fiber optics and optical communications : Lasers, fiber

ToC Category:
Lasers and Laser Optics

Original Manuscript: December 14, 2010
Revised Manuscript: January 26, 2011
Manuscript Accepted: January 30, 2011
Published: February 15, 2011

Dong Mao, Xueming Liu, Leiran Wang, Hua Lu, and Lina Duan, "Dual-wavelength step-like pulses in an ultra-large negative-dispersion fiber laser," Opt. Express 19, 3996-4001 (2011)

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