CAJ | 학술논문

研究了在受激喇曼散射与三阶色散共同作用下,自相似脉冲在具有正常色散的色散渐减光纤中的演化情况.结果表明:在同一个传输距离上,当考虑受激喇曼散射与三阶色散的共同影响时,脉冲中心的不对称特性相对好转;产生中心漂移与边缘振荡较只有三阶色散作用时要减弱,啁啾仍然具有很强的线性特性,但是线性范围减小,导致频谱的窄化以及对接下来自相似脉冲的压缩产生了不利影响;而且光纤长度的延长并没有起到展宽啁啾线性范围的效果,反而导致严重的啁啾非线性;因此对脉冲进行压缩后,压缩脉冲质量较不考虑受激喇曼散射时要差.
연구료재수격나만산사여삼계색산공동작용하,자상사맥충재구유정상색산적색산점감광섬중적연화정황.결과표명:재동일개전수거리상,당고필수격나만산사여삼계색산적공동영향시,맥충중심적불대칭특성상대호전;산생중심표이여변연진탕교지유삼계색산작용시요감약,조추잉연구유흔강적선성특성,단시선성범위감소,도치빈보적착화이급대접하래자상사맥충적압축산생료불리영향;이차광섬장도적연장병몰유기도전관조추선성범위적효과,반이도치엄중적조추비선성;인차대맥충진행압축후,압축맥충질량교불고필수격나만산사시요차.
Considering Third-order Dispersion and Stimulated Raman Scattering effect, the properties of the self-similar parabolic pulse evolution in a dispersion-decreasing optical fiber with normal group-velocity dispersion are investigated. The results show that parabolic pulses are distorted less and the characteristic of exactly self-similarity will be better due to SRS effect than only considering TOD effect. The pulse still reveals highly linear chirp only linearity range narrow down. The highly linear chirp in optical pulse still allows for efficient and high-quality pulse compression by use of dispersion compensation technique.