Fig. 3: Experimental generation of bright DQS.
From: Dissipative quadratic soliton in the cascaded nonlinearity limit
a Output average power of the FF and SH as a function of normalized detuning \({\Delta }_{1}={\delta }_{1}/{\alpha }_{1}\). b Optical spectra of the bright DQS at the FF with different normalized detunings. c Optical spectra of the bright DQS at the SH with different normalized detunings. d RF spectra of the bright DQS at the FF with different detunings. e Optical spectrum (left) and RF spectrum (right) of the single bright DQS at the FF, taken with a normalized detuning of −7.6. f Optical spectrum (left) and RF spectrum (right) of the single bright DQS at the SH, taken with a normalized detuning of -7.6. The spectral shoulder beyond 1580 nm originates from the amplified spontaneous emission of the L-band erbium-doped fiber amplifier. The identical repetition rates of the FF and SH confirm the mutual trapping of the dual-color bright DQS. g–i The effect of GVM on the optical spectrum at the FF and SH as well as the corresponding simulated temporal profiles. g GVM of 0 fs/mm and \({\Delta }_{1}\) of -7.6; (h) GVM of 5.5 fs/mm and \({\Delta }_{1}\) of −7.0; i GVM of 11 fs/mm and \({\Delta }_{1}\) of −6.8. j–l The effect of phase mismatch on the optical spectrum at the FF and SH. The third column shows the corresponding simulated temporal profiles. j \(\xi\) of −1.4π and \({\Delta }_{1}\) of −6.4; (k) \(\xi\) of −2.0π and \({\Delta }_{1}\) of −7.6; (l) \(\xi\) of −2.4π and \({\Delta }_{1}\) of −7.6.
