Patent ID: 6424664
Filing Date: 2002-07-23
Classification: H01S

Abstract:
A Brillouin/erbium fiber laser system for producing multiwavelength optical outputs with a dual spacing of 10 GHz and 20 GHz, comprising:a Sagnac reflector including a Brillouin gain medium, a coupling means connected to two ends of the Sagnac reflector, and fiber polarization controllers adjusting the birefringence of the Brillouin gain medium so that the spacing of the multiwavelength optical outputs is adjusted to either 10 GHz or 20 GHz; a first linear section acting as a first resonator with the Sagnac reflector and including a first output fiber coupler for outputting the multiwavelength optical outputs, a Brillouin pump input fiber coupler for coupling a Brillouin pump light provided from an external device into the Sagnac reflector to thereby produce a laser light, a first optical amplifier, and a first fiber planar mirror for reflecting the laser light in the first resonator to the Sagnac reflector; and a second linear section acting as a second resonator with the Sagnac reflector and including a second output fiber coupler for outputting the multiwavelength optical outputs, a second optical amplifier, and a second fiber planar mirror for reflecting the laser light in the second resonator to the Sagnac reflector, wherein the laser light resonates between the Sagnac reflector and the first and second linear sections, and the first and second linear sections alternately output the resonating laser light as the multiwavelength optical outputs through the first and second output fiber couplers, respectively.