摘要
在以YAG倍频激光器为光源进行阶跃型单模石英光纤的受激喇曼散射实验中发现,随斯托克斯波级次的增高,产生的模式为光纤所能传输的最高阶模式。由于光纤中介质对不同的波长具有不同的色散效应,因此,对能形成导模的斯托克斯波要求其要同时满足色散效应和受激喇曼位相匹配这两个条件,才能在光纤中传输。根据理论计算能够很好地解释实验现象。
It does the SRS experiment in step type single mode quartz optical fiber whose light source is YAG frequency multiplication laser, deduces the SRS's gain factor. From the results of experiments, it can find that the Stokes wave facula dimension of step type single mode optical fiber has no remarkable change, the producing mode is the highest that can be transmitted by optical fiber as the Stokes level increasing. In the light of this problem, it put forward a new theory mode, namely because the medium of optical fiber has different dispersion effect on different wavelength, it can form guide mode only to simultaneously meet dispersion effect and SRS phase match. Through calculating according to this theory, it can better explain the experiment phenomenon.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2005年第z1期416-418,共3页
Chinese Journal of Scientific Instrument
