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Tunable multi-wavelength fiber ring laser based on a Hi-Bi fiber loop mirror
作者姓名:王肇颖  胡智勇  葛春风  姜骁骏  包焕民  贾东方  李世忱
基金项目:This work was supported by the National Natural Science Foundation of China(No. 69877012),Tianjin Science and Technology Development Foundation (No. 033800411),Youth Teacher Foundation of Tianjin University.
摘    要:A novel tunable multi-wavelength fiber ring laser based on semiconductor optical amplifier (SOA) is proposed by using a high-birefringence (Hi-Bi) fiber loop mirror (FLM) as wavelength filter. With this configuration, the wavelength spacing of this laser can be varied by using the different lengths of Hi-Bi fiber. 8 wavelengths spacing on 450 GHz are experimentally obtained with more than 25-dB signal-to-noise ratio (SNR) for each channel using 1.28-m Hi-Bi fiber in Hi-Bi FLM. The output power variation between different channels is measured to be less than 5.9 dB. The linewidth of each channel is compressed from 0.347 to 0.186 nm by 1.5-m unpumped erbium-doped fiber (EDF). Meanwhile, 17 wavelengths spacing on ITU-gird (100 GHz) are also obtained with 5.9-m Hi-Bi fiber in Hi-Bi FLM. All these channels can be tuned together over 0.4 nm.

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