Fig. 1: Overview of experimental setup and results.
From: Pulse-onset dynamics in a bidirectional mode-locked fibre laser via instabilities
a The experimental setup of bidirectional mode-locked ring fibre laser for the dispersive Fourier transform (DFT) measurements. SWNT single-walled carbon nanotubes, ISO optical isolator, OC optical coupler, WDM wavelength division multiplexer. Spectral switch-on dynamics in bidirectional mode-locked laser: b clockwise (CW) and c counter-clockwise (CCW) directions. Averaged over 100 round trips DFT spectra with sech2-function approximation (black dashed line), spectra from optical spectrum analyser (OSA) are depicted for d clockwise and e counter-clockwise direction. f Dynamics of the round trip pulse energies.
