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Optical Engineering

Supercontinuum generation in photonic crystal fibers with a normal dispersion pump pulse near the zero-dispersion wavelength
Author(s): Shumin Zhang; Xiufeng Yang; Fuyun Lu; Yan Dong Gong; Xiulan Meng
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Paper Abstract

The onset of supercontinuum generation in a photonic crystal fiber (PCF) is investigated experimentally and numerically as a function of pump optical power with a femtosecond pulse. The pump pulse wavelength is positioned in the normal-dispersion regime close to the zero-dispersion wavelength (ZDW) of the PCF. When the pump power is low, the self phase modulation (SPM) is the dominant nonlinear process. With the increasing pump power, the primary mechanism of spectral broadening is identified as the combined action of stimulated Raman scattering (SRS) and parametric four-wave mixing (FWM). In the experiment, we have also observed the anti-Stokes Raman component, which reveals the importance of the fact that the pump pulses are positioned near the ZDW. Third-order dispersion (TOD) and Raman self frequency shift (RSS) also contribute to the supercontinuum generation. Good agreement between experiment and simulation is obtained.

Paper Details

Date Published: 1 July 2008
PDF: 6 pages
Opt. Eng. 47(7) 075005 doi: 10.1117/1.2956387
Published in: Optical Engineering Volume 47, Issue 7
Show Author Affiliations
Shumin Zhang, Hebei Normal Univ. (China)
Xiufeng Yang, A*STAR Institute for Infocomm Research (Singapore)
Fuyun Lu, Nankai Univ. (China)
Yan Dong Gong, A*STAR Institute for Infocomm Research (Singapore)
Xiulan Meng, Hebei Normal Univ. (China)

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