Acta Photonica Sinica, Volume. 45, Issue 3, 314008(2016)
2 μm Dual-wavelength Tunable Spacing All Fiber Thulium-doped Fiber Laser
A dual-wavelength tunable spacing all fiber thulium-doped laser is reported and demonstrated.The conventional ring cavity is used in this fiber laser, 1 565 nm pump source can achieve maximum output power 33 dBm, and a segment of 4m long single mode thulium-doped fiber is gain medium.The filter is a composite structure based on multimode interference effect and Sagnac ring. Through the composite filter, it can radiate tunable spacing and high side mode suppression ratiodual- wavelength laser output. The experimental results suggest that not only dual-wavelength tunable spacing from 3 nm to 80 nm, but also SMSR is 60 dB under the controlling of pump power and polarization controller in composite filter,line-width is 0.2 nm ,power fluctuation is ±1.5 dB/h,bimodal energy difference is less than 4 dBm.
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ZHANG Yan, WANG Tian-shu, ZHANG Peng, MA Wan-zhuo, LIU Peng, SU Yu-wei, BI Ming-zhe, ZHANG Jing. 2 μm Dual-wavelength Tunable Spacing All Fiber Thulium-doped Fiber Laser[J]. Acta Photonica Sinica, 2016, 45(3): 314008
Received: Sep. 28, 2015
Accepted: --
Published Online: Apr. 1, 2016
The Author Email: Yan ZHANG (454100998@qq.com)