Abstract
A novel double-pumped ring cavity multiwavelength fiber optical parametric
oscillator (MW-FOPO) with tunable wavelength spacing is proposed. In the MW-FOPO, we
utilize a highly nonlinear dispersion-shifted fiber as the gain medium and a
Mach–Zehnder interferometer as the comb-like filter. Twenty-four-wavelength lasing of
the double-pumped MW-FOPO with a ripple less than ±4.3 dB and a wavelength spacing
of about 0.8 nm in a wavelength range from 1541 to 1558 nm is experimentally
demonstrated. The wavelength spacing can be continuously tuned and multiwavelength
lasings with wavelength spacings of 0.08, 0.2, 0.4, and 0.8 nm are demonstrated,
respectively. We discussed the power stability of the multiwavelength lasing of the
double-pumped MW-FOPO. A comparison of the output spectra among the double-pumped
MW-FOPO, the single-pumped MW-FOPO, and the multiwavelength erbium-doped fiber laser is
also presented.
© 2012 IEEE
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