Method and apparatus for multi-wavelength stable output of line type structure optical fiber laser
A fiber laser and linear structure technology, applied in lasers, laser components, nonlinear optics, etc., can solve the problems of requiring special optical fibers, complex and high cost of laser systems
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[0026] The fiber Raman amplifier 3 and the erbium-doped fiber amplifier 4 with a gain range of 1560nm to 1570nm are selected for use; the optical fiber loop mirror light 1 and optical coupler 2 with a working range of 1530nm to 1580nm are selected, and the optical coupler 2 has a small fractional ratio (2%) port as the laser output port. Sagnac loop filter 9 comprises a polarization controller 6 and another polarization controller 8 connected in series at the two ends of high birefringence fiber 7 through optical fiber, the other end of the two polarization controllers is respectively with the same direction port of 3dB optical coupler 5 connect. The high birefringence fiber 7 has a length of 15.2 m and a birefringence of 0.00032. According to formula (1), the output wavelength interval is 0.5nm.
[0027] Such as figure 1 As shown, the first structure is adopted, the optical fiber loop mirror light 1 is connected to one end of the optical coupler 2, the other end of the opt...
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