30-THz span optical frequency comb generation by self-phasemodulation in an optical fiber

摘要

The width of an optical frequency comb (OFC) was increased to 30nTHz by using self-phase modulation (SPM) in an optical fiber. This valuenis 2.7 times larger than the maximum OFC span obtained by the OFCngenerator alone. We compare the resulting spectrum to numericalnsimulations to confirm that the SPM and the higher order dispersion ofnthe fiber contribute to broaden the spectral profile