CAJ | 학술논문

对光纤AM-CATV外调制传输系统中附加相位调制法抑制受激布里渊散射(SBS)进行了详细的实验研究，结果显示SBS抑制效果与调相源个数及相位调制深度有关，与调相源频率无关；单个调相源可将SBS阈值提高到13 dBm以上，而两个调相源可将系统SBS阈值提高到18 dBm以上；相位调制对系统的非线性特性无影响。
대광섬AM-CATV외조제전수계통중부가상위조제법억제수격포리연산사(SBS)진행료상세적실험연구，결과현시SBS억제효과여조상원개수급상위조제심도유관，여조상원빈솔무관；단개조상원가장SBS역치제고도13 dBm이상，이량개조상원가장계통SBS역치제고도18 dBm이상；상위조제대계통적비선성특성무영향。
The detail experimental study of phase modulation for Stimulated Brillouin Scattering (SBS) suppression in optical fiber AM-CATV externally modulated transmitter is presented in this paper. The experimental data show that the improvement of SBS threshold is dependent of the number of SBS suppression source and the phase modulation index, and independent of the frequency of SBS suppression signal. The experiments also show that single signal phase modulation can improve the SBS threshold to 13 dBm and two signal phase modulation can improves the SBS threshold to 18 dBm or above. It is also demonstrated in this paper that the phase modulation has no influence on the nonlinearity in optical fiber AM-CATV externally modulated transmission system.