Multi-wavelength Brillouin/erbium fiber laser discriminating even/odd order Stokes waves

Summary form only given. Multi-wavelength Brillouin/erbium fiber lasers (BEFLs) with several kinds of cavity configurations have been recently reported for a number of applications. An erbium-doped fiber amplifier (EDFA) in a laser cavity of the BEFL compensates the resonator loss that is critical in ordinary Brillouin fiber lasers (BFLs), while still originating lasing action from the nonlinear Brillouin gain. We describe a novel operation scheme of a BEFL whose cavity comprises two metal coated fiber planar mirrors (FPMs) and a Sagnac reflector. By the adjustment of polarization controllers (PCs) in the Sagnac reflector, both 10 GHz and 20 GHz multi-wavelength operations can be supported.