Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 23, Issue 22, Pages 1658-1660Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2011.2166112
Keywords
Fiber ring lasers; single longitudinal mode (SLM); tunable lasers; ytterbium lasers
Funding
- National Basic Research Program of China (973 Program) [2010CB327606]
- National Nature Science Foundation of China [61090391]
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A broadband tunable, single-longitudinal-mode (SLM) ytterbium fiber laser based on a passive multiple-ring cavity (MRC) technique is proposed and demonstrated experimentally for the first time to our knowledge. Two different short ring cavities are inserted into the main ring cavity and serve as wideband mode filters to ensure SLM oscillation. With 1-m ytterbium-doped fiber as the gain medium, the SLM operation is achieved with over 60-nm wavelength tuning range at 100-mW pump power. The laser is very stable with output power of 6 dBm and an optical signal-to-noise ratio of higher than 53 dB in all the 60-nm tuning range.
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