Widely tunable Raman ring laser using highly nonlinear fiber
- 23 October 2009
- journal article
- Published by Pleiades Publishing Ltd in Laser Physics
- Vol. 19 (12), 2200-2203
- https://doi.org/10.1134/s1054660x0923011x
Abstract
An all-optical widely tunable Raman fiber laser has been realized by incorporating a highly nonlinear fiber in a ring cavity. By feedback a portion of Raman Stokes wave back into the highly nonlinear gain medium, a Raman fiber laser is generated. We found that the lasing wavelength of Raman fiber laser can be tuned from 1537 to 1568 nm with peak power fluctuation within 1 dB, giving a total wavelength tunability of 31 nm. The optical signal-to-noise ratio is found to be wavelength dependent, and the highest optical signal-to-noise ratio of about 59 dB is recorded. The lasing threshold of the Raman fiber laser with this configuration is found to be as low as 300 mW.Keywords
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