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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 11 — May. 24, 2010
  • pp: 11046–11051

Flat supercontinuum generation in cascaded fibers pumped by a continuous wave laser

Chunyu Guo, Shuangchen Ruan, Peiguang Yan, Erming Pan, and Huifeng Wei  »View Author Affiliations

Optics Express, Vol. 18, Issue 11, pp. 11046-11051 (2010)

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We realize the flattening and extending of a CW-pumped supercontinuum with a high spectral intensity peak at the pump region. It is achieved by cascading a long zero-dispersion wavelength high-nonlinearity fiber with the output photonic crystal fiber, in order to improve the conversion efficiency of residual pump energy to long-wavelength continuum based on the effect of cascaded stimulated Raman scattering. Compared with the non-flattened continuum of 10.3 W with 3 dB bandwidth of 62 nm and 10 dB bandwidth of 360 nm, a flat continuum of 8 W with 3 dB spectral range of 340 nm and 10 dB spectral range of 420 nm is obtained. The spectral peak at the pump region decreases more than 5 dB, below the level of long-wavelength spectral intensity. Also, the long-wavelength edge has been extended by 60 nm.

© 2010 OSA

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(190.5650) Nonlinear optics : Raman effect

ToC Category:
Nonlinear Optics

Original Manuscript: March 16, 2010
Revised Manuscript: April 30, 2010
Manuscript Accepted: April 30, 2010
Published: May 11, 2010

Chunyu Guo, Shuangchen Ruan, Peiguang Yan, Erming Pan, and Huifeng Wei, "Flat supercontinuum generation in cascaded fibers pumped by a continuous wave laser," Opt. Express 18, 11046-11051 (2010)

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