Abstract
Coherent octave spanning supercontinuum (SC) is useful in the field of spectroscopy and application of optical frequency comb [1]. Generally, the highly nonlinear fibers (HNLF) and photonic crystal fibers (PCF) with zero dispersion wavelength close to the wavelength of the pump pulse were used for octave spanning SC generation. In those SCs, however, the spectral shapes have many precise structures and they often cause the problems in the application of SCs. Using the normal dispersion HNLF or PCF, we can generate SC with good flatness [2]. However, since the spectra were broadened by only the induced self-phase modulation, it was difficult to generate octave spanning SC using only normal dispersion fibers.
© 2015 IEEE
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