We have proposed and demonstrated a fiber ring laser with single-polarization output using an intracavity 45°-tilted fiber grating (45°-TFG). The properties of the 45°-TFG have been investigated both theoretically and experimentally. The fiber ring laser incorporating the 45°-TFG has been systematically characterized, showing a significant improvement in the polarization extinction ratio (PER) and achieving a PER of >30 dB. The slope efficiencies of the ring laser with and without the 45°-TFG have been measured. This laser shows a very stable polarized output with a PER variation of less than 2 dB for 5 hours at laboratory conditions. In addition, we also demonstrated the tunability of the laser.
Bibliographical note© 2009 Optical Society of America
- fibre optics
- optical communications
Mou, C., Zhou, K., Zhang, L., & Bennion, I. (2009). Characterization of 45º-tilted fiber grating and its polarization function in fiber ring laser. Journal of the Optical Society of America B, 26(10), 1905-1911. https://doi.org/10.1364/JOSAB.26.001905