【摘 要】
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We demonstrate multiwavelength Brillouin fiber lasers (MWBFLs) with double-frequency spacing based on a small-core fiber (SCF) and a standard single-mode fiber
【机 构】
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Laboratory of Infrared Materials and Devices,The Research Institute of Advanced Technologies,Ningbo
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We demonstrate multiwavelength Brillouin fiber lasers (MWBFLs) with double-frequency spacing based on a small-core fiber (SCF) and a standard single-mode fiber (SMF),which have core diameters of 5 and 8.8 μm,respectively.Exper-imental results show that the SCF-based MWBFL exhibits a higher laser output power and a lower pump threshold.The output powers of the SCF-based MWBFL are ＞ 1.4 times those of the SMF-based MWBFL.Moreover,the threshold power required to generate each channel of the SCF-based MWBFL is 59％ that of the SMF-based MWBFL.When the same pump power of 180 mW is injected,the number of laser channels generated for the SCF-based MWBFL is 13,which is twice that generated for the SMF-based MWBFL.In addition,the SCF-based MWBFL exhibits good wavelength tunability from 1535 to 1565 nm and temporal stability over an hour.
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