Double-frequency spaced multiwavelength Brillouin-Erbium fiber laser in a hybrid linear-ring configuration

We demonstrate a multiwavelength Brillouin Erbium fiber laser with double channel spacing operating at room temperature using a hybrid linear-ring cavity. 7 simultaneous lines with 0.175nm line spacing using both a 100mW pump at 980nm and a 4dBm Brillouin pump are achieved by circulating the odd-order Stokes signals in a 7km long single mode fiber based sub-ring cavity, allowing for the formation of even-order Stokes signals at the output.