| 相位调制对光纤受激布里渊散射阈值的影响 |
| |
| 引用本文： | 陈伟,孟洲.相位调制对光纤受激布里渊散射阈值的影响[J].中国激光,2011(3). |
| |
| 作者姓名： | 陈伟 孟洲 |
| |
| 作者单位： | 国防科学技术大学光电科学与工程学院; |
| |
| 基金项目： | 新世纪优秀人才项目(NCET-06-0925)资助课题 |
| |
| 摘 要： | 相位调制是光纤中提高受激布里渊散射阈值、抑制受激布里渊散射效应的有效方法。理论分析了相位调制中调制幅度及调制频率的改变对受激布里渊散射阈值的影响,实验研究了25 MHz调制频率、不同调制幅度以及调制幅度为1.5,不同调制频率下受激布里渊散射阈值的变化情况。结果表明,受激布里渊散射阈值既随相位调制幅度的增大而增大,又随相位调制频率的增大而增大。当相位调制幅度为7.7,相位调制频率为25 MHz时,受激布里渊散射阈值提高约7 dB。当相位调制幅度为1.5,相位调制频率较小为5 MHz时,相位调制对受激布里渊散射阈值的影响不够明显。
|
| 关 键 词： | 光纤光学 受激布里渊散射 相位调制 阈值 |
Effects of Phase Modulation on Threshold of Stimulated Brillouin Scattering in Optical Fibers |
| |
| Chen Wei Meng Zhou.Effects of Phase Modulation on Threshold of Stimulated Brillouin Scattering in Optical Fibers[J].Chinese Journal of Lasers,2011(3). |
| |
| Authors: | Chen Wei Meng Zhou |
| |
| Affiliation: | Chen Wei Meng Zhou(College of Optoelectronic Science and Engineering,National University of Defense Technology,Changsha,Hunan 410073,China) |
| |
| Abstract: | Phase modulation is an effective method to increase the threshold of the stimulated Brillouin scattering.Effects of modulation amplitude and frequency on the threshold are analyzed in theory.Experiments at different modulation amplitudes and frequencies are conducted to investigate the variance of the threshold.It is shown that the threshold increases with not only the modulation amplitude but also the modulation frequency.When the modulation amplitude is 7.7 and the modulation frequency is 25 MHz,the thres... |
| |
| Keywords: | fiber optics stimulated Brillouin scattering phase modulation threshold |
| 本文献已被 CNKI 等数据库收录！ |
