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光纤中基于多频相位调制的受激布里渊散射抑制
          
Research on stimulated Brillouin scattering suppression based on multi-frequency phase modulation

摘    要
理论和实验上研究了多频相位调制产生等幅光谱线并将其应用在光纤传输系统中的受激布里渊散射抑制(SBS)。理论分析表明若调制信号包含n个谐波分量且既有奇次谐波又有偶次谐波时,可得到2n+1条等幅光谱线。本文数值模拟了三、五、七、十一条等幅光谱线,并在实验上得到等幅光谱线,它们的光谱平坦度均小于0.3dB。等幅光谱线抑制SBS的理论研究表明调制后的阈值功率同基频和各阶边频复振幅模的平方成反比关系,实验结果表明三、五、七和十一条谱线对应的SBS阈值各提高5.21 dB、8.36 dB、9.39 dB和10.76dB。
标    签 光纤通信系统   多频相位调制   等幅光谱线   受激布里渊散射   抑制   060.2330   060.3510   140.0140  
 
Abstract
The method of generating equal-amplitude spectral lines by multi-frequency phase modulation is used in stimulated Brillouin scattering (SBS) suppression. The spectra of three, five, seven, and eleven equal-amplitude spectral lines are obtained in experiment with flatnesses less than 0.3 dB. Theoretical research on SBS suppression shows that the threshold power after modulation is in reverse proportion to the maximum square of amplitude moduli of fundamental frequency and the nth harmonic wave. The threshold powers of three, five, seven, and eleven equal-amplitude spectral lines are improved by 5.21, 8.36, 9.39, and 10.76 dB, respectively.

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收稿日期 2008/6/11

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备注E-mail: zw_lu@sohu.com

引用该论文: Yingfan Liu,Zhiwei Lv,Yongkang Dong,Qiang Li. Research on stimulated Brillouin scattering suppression based on multi-frequency phase modulation[J]. 中国光学快报, 2009, 7(1): 29~31


被引情况:


【1】吕月兰,行永伟,董永康, "使用多频相位调制在光纤中产生等振幅光梳",Chinese Optics Letters 8, 316-319(2010)

【2】陈伟,孟洲, "频率调制光纤激光器的调制幅度和频率对光纤受激布里渊散射阈值的影响",Chinese Optics Letters 8, 1124-1126(2010)

【3】杜文博,王小林,韩凯,周朴,许晓军,舒柏宏, "相位调制法抑制高功率窄线宽光纤放大器中的受激布里渊散射",中国激光 38, 1105009--1(2011)

【4】周朴,马阎星,王小林,马浩统,许晓军,刘泽金, "主振荡功率放大器结构光纤激光相干合成系统对谱线需求的实验研究",光学学报 30, 2027-2031(2010)



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参考文献
【1】J. Yang, Z. Guo, and K. Zha, Chinese J. Lasers (in Chinese) 28, 439 (2001).
 
【2】J. Yang, K. Zha, and T. Tu, Acta Photon. Sin. (in Chinese) 29, 53 (2000).
 
【3】F. W. Willems, W. Muys, and J. S. Leong, IEEE Photon. Technol. Lett. 6, 1476 (1994).
 
【4】C. Li, Opt. Optoelectron. Technol. (in Chinese) 3, 9 (2005).
 
【5】C. Li, J. He, and J. Xu, Study Opt. Commun. (in Chinese) (1) 3 (2005).
 
【6】S. K. Korotky, “Multifrequency lightwave source using phase modulation for suppressing stimulated Brillouin scattering in optical fibers” US Patent 5,566,381 (Oct. 15, 1996).
 
【7】Z. Lu, Y. Dong, and Q. Li, Opt. Express 15, 1871 (2007).
 
【8】Y. Dong, Z. Lu, and Q. Li, J. Opt. Soc. Am. B 25, C109 (2008).
 
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