With the occurrence of an adding driving field, the properties of the dispersion and the absorption of a four-level system are changed greatly. The system can produce the normal and anomalous dispersion regions with p...With the occurrence of an adding driving field, the properties of the dispersion and the absorption of a four-level system are changed greatly. The system can produce the normal and anomalous dispersion regions with proper parameters. Here, the driving fields can be seemed as knobs to manipulate the group velocity of a weak probe field between subluminal and superluminal.展开更多
TN25 2000010405单模光纤反常色散区零色散波长附近的啁啾演变=Evolution of chirp near the zero dispersionpoint in the region of anomalous dispersion inmonomode optical fibers[刊,中]/王晶,苗洪利(内蒙古师范大学物理系.内蒙古...TN25 2000010405单模光纤反常色散区零色散波长附近的啁啾演变=Evolution of chirp near the zero dispersionpoint in the region of anomalous dispersion inmonomode optical fibers[刊,中]/王晶,苗洪利(内蒙古师范大学物理系.内蒙古,呼和浩特(010022)),刘秀敏,冯璐,冯启元(内蒙古大学物理系.内蒙古,呼和浩特(010021))//光电子·激光.—1998,9(1).—58-60当单模光纤的反常色散区二阶、三阶色散同时存在时,首次推出了群速度色散致啁啾的解析表达式,并讨论了啁啾演变过程。利用数值方法。展开更多
Previous studies on modulation instabilities（MIs） in birefringent optical fibers focus on the ordinary linearly and circularly ones. This paper reports an analysis of MIs in the general elliptically birefringent fib...Previous studies on modulation instabilities（MIs） in birefringent optical fibers focus on the ordinary linearly and circularly ones. This paper reports an analysis of MIs in the general elliptically birefringent fibers with the emphasis on investigating the effects of ellipticity angle（0？ ≤θ≤ 90？）. Both symmetric and antisymmetric CW states are considered. In the anomalous dispersion regime, for the symmetric（antisymmetric） CW states, we show that MI gain increases dramatically（reduces first and then enhances greatly） as the increment of θ. In the normal dispersion regime, for the both CW states, the distinctive feature is that the gain of the MI bands reduces first, vanishes at θ = 45？,reappears across this ellipticity angle, and quickly increases after then.展开更多
基金Supported by National Natural Science Foundation of China under Grant Nos.61008063 and 10547108the Key Project of National Natural Science Foundation of China under Grant No.60837004+1 种基金Natural Science Foundation of Education Department of Guangdong Province of China under Grant No.LYM08099Natural Science Foundation of Foshan University
文摘With the occurrence of an adding driving field, the properties of the dispersion and the absorption of a four-level system are changed greatly. The system can produce the normal and anomalous dispersion regions with proper parameters. Here, the driving fields can be seemed as knobs to manipulate the group velocity of a weak probe field between subluminal and superluminal.
文摘TN25 2000010405单模光纤反常色散区零色散波长附近的啁啾演变=Evolution of chirp near the zero dispersionpoint in the region of anomalous dispersion inmonomode optical fibers[刊,中]/王晶,苗洪利(内蒙古师范大学物理系.内蒙古,呼和浩特(010022)),刘秀敏,冯璐,冯启元(内蒙古大学物理系.内蒙古,呼和浩特(010021))//光电子·激光.—1998,9(1).—58-60当单模光纤的反常色散区二阶、三阶色散同时存在时,首次推出了群速度色散致啁啾的解析表达式,并讨论了啁啾演变过程。利用数值方法。
基金Supported by the National Natural Science Foundation of China under Grant Nos.11447113 and 11305031 Natural Science Foundation of Jiangsu Provincial Universities under Grant No.14KJB140009 the Startup Foundation for Introducing Talent of Nanjing University of Information Science and Technology under Grant No.2241131301064
文摘Previous studies on modulation instabilities（MIs） in birefringent optical fibers focus on the ordinary linearly and circularly ones. This paper reports an analysis of MIs in the general elliptically birefringent fibers with the emphasis on investigating the effects of ellipticity angle（0？ ≤θ≤ 90？）. Both symmetric and antisymmetric CW states are considered. In the anomalous dispersion regime, for the symmetric（antisymmetric） CW states, we show that MI gain increases dramatically（reduces first and then enhances greatly） as the increment of θ. In the normal dispersion regime, for the both CW states, the distinctive feature is that the gain of the MI bands reduces first, vanishes at θ = 45？,reappears across this ellipticity angle, and quickly increases after then.
