Abstract
The influence of chromatic dispersion on continuous-wave (CW)-pumped
supercontinuum (SC) generation in kilometer-long standard fibers is experimentally
investigated. We perform our study by means of a tunable, high-power fiber
ring laser pumping a dispersion-shifted fiber in the wavelength range of small
and medium anomalous dispersion. Our results show that, at low input powers,
chromatic dispersion plays a dominant role on nonlinear pump spectral broadening,
giving rise to a broader spectrum when pumping just above the zero-dispersion
wavelength of the fiber. At higher input powers, however, the width of the
generated SC spectrum is mostly due to the Raman effect, hence more independent
of the value of the chromatic dispersion coefficient. We show that, in this
case, the optimum pumping wavelengths for SC generation are not so close to
the zero-dispersion wavelength of the fiber as in the previous case. In these
conditions, as the chromatic dispersion grows, we can obtain square-shaped
and high-power density spectra, which seem extremely promising for applications
in optical coherence tomography.
© 2009 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Add to BibSonomy