Two simultaneous operating regimes in an Erbium doped-fiber laser

• A Multiwavelength laser beam is proposed with paired arrayed waveguide gratings.
• We demonstrate two operating regime of Erbium doped-fiber tunable and simultaneous.
• One of regimes is active mode-locking at stable 10 GHz, the other is CW.
• Others operation regimes of fiber lasers may be proposed within this configuration.

This work presents an Erbium doped fiber laser operating simultaneously in two distinct regimes, active mode-locking and continuous wave (CW), by introducing two arrayed waveguide gratings (AWG) paired inside ring cavity. Active phase modulator operating at 10 GHz and a single mode fiber were introduced between the two AWGs to allow the two operating regimes. The mode-locking was able to generated pulses with 30 ps simultaneous with the CW line. Both lasers could be tunable independent and simultaneously from 1530 nm to 1565 nm.