Single- and dual-wavelength switchable erbium-doped fiber ring laser based on intracavity polarization selective tilted fiber gratings

被引:28
|
作者
Mou, Chengbo [1 ]
Saffari, Pouneh [1 ]
Fu, Hongyan [2 ]
Zhou, Kaiming [1 ]
Zhang, Lin [1 ]
Bennion, Ian [1 ]
机构
[1] Aston Univ, Sch Engn & Appl Sci, Photon Res Grp, Birmingham B4 7ET, W Midlands, England
[2] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Ctr Opt & Electromagnet Res, Hangzhou 310058, Zhejiang, Peoples R China
关键词
BRAGG GRATINGS; TEMPERATURE;
D O I
10.1364/AO.48.003455
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We propose and demonstrate a single- and dual-wavelength switchable erbium-doped fiber laser (EDFL) by utilizing intracavity polarization selective filters based on tilted fiber gratings (TFGs). In the cavity, one 45 degrees TFG functions as an in-fiber polarizer and the other 77 degrees TFG is used as a fiber polarization dependent loss (PDL) filter. The combined polarization effect from these two TFGs enables the laser to switch between the single- and the dual-wavelength operation with a single-polarization state at room temperature. The laser output at each wavelength shows an optical signal-to-noise ratio (OSNR) of >600, a side mode suppression ratio (SMSR) of >500, and a polarization extinction ratio of similar to 35 dB. The proposed EDFL can give stable output under laboratory conditions. (C) 2009 Optical Society of America
引用
收藏
页码:3455 / 3459
页数:5
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