| 简介 |
A polarized fiber laser source includes a fiber laser (10) comprising a pair of Bragg gratings (14, 16) at opposite ends of a fiber laser cavity (18) which is doped with a rare-earth dopant so as to allow lasing to occur at a lasing wavelength .lambda.L. A grating tap (26) is provided along a portion of the laser cavity (18) to couple-out a predetermined amoun t of light along one polarization, e.g., the "s" polarization, at the lasing wavelength .lambda.L. This causes one polarization mode to experience more loss than the other, thereby allowing the fiber laser to las e only on the less lossy polarization mode and causing the laser output light (40) to be polarized only along such polarization. |
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