Wide-band multiwavelength Brillouin-Raman fiber laser based on feedback optimization

被引：8
作者：
Ahmad, H. [1 ,2 ]
Al-Alimi, A. W. [1 ]
机构：
[1] Univ Malaya, Photon Res Ctr, Kuala Lumpur 50603, Malaysia
[2] Univ Malaya, Phys Dept, Fac Sci, Kuala Lumpur 50603, Malaysia
来源：
OPTICS COMMUNICATIONS | 2019年 / 453卷
关键词：
Fiber laser; Multiwavelength Brillouin-Raman fiber laser; Brillouin-Raman; Stimulated Brillouin scattering; Variable optical attenuator; Line suppression; STIMULATED BRILLOUIN; RAYLEIGH-SCATTERING; AMPLIFICATION; GENERATION;
D O I：
10.1016/j.optcom.2019.124402
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A multiwavelength Brillouin-Raman fiber laser (BRFL) with a 51-nm wide bandwidth is proposed and demonstrated. The BRFL is configured in a half-open cavity (HOC) design with a variable optical attenuator in the cavity. The BRFL exhibits a 60 % improvement in tunability as compared to a conventional half-open BRFL structure. At a Raman pump power of 1.2 W and 1525 nm Brillouin pump power of 12 dBm, 652 uniform Stokes lines with an average optical signal to noise ratio (OSNR) higher than 40 dB are produced. The generated channels have a total output power of 14.5 dBm and a power fluctuation of 0.5 dB over a period of one hour. In contrast, the conventional HOC shows a lower performance in terms of tuning range, OSNR and Stokes lines count. The 51 nm bandwidth using a single Raman pump laser is, to the best of our knowledge, the widest yet reported.
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页数：7
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