We report on theoretical investigations of beam control in one-dimensional tri-core photonic lattices (PLs). Linear splitting is illustrated in tri-core PLs; the effect of defect strength on the splitting is discuss...We report on theoretical investigations of beam control in one-dimensional tri-core photonic lattices (PLs). Linear splitting is illustrated in tri-core PLs; the effect of defect strength on the splitting is discussed in depth for single-wavelength light. We reveal that splitting disappears when the defect strength trends to zero, while reoccurring under nonlinearity. Multi-color splitting and active control are also proposed in such photonic structures.展开更多
An all-fiber femtosecond vortex laser based on common fiber components is constructed. It can produce femtosecond orbital angular momentum modes whose time pulse width is 398 fs. The topological charge of output orbit...An all-fiber femtosecond vortex laser based on common fiber components is constructed. It can produce femtosecond orbital angular momentum modes whose time pulse width is 398 fs. The topological charge of output orbital angular momentum (OAM) modes from this laser can be adjusted among 0, +1, and -1 easily while it is also easy to convert between continuous OAM modes and pulse OAM modes.展开更多
through single-site excitation. By changing the initial to the lattices, periodic oscillations of the localized quadruple state becomes a rotating doubly charged undergo charge-flipping when the rotating direction is ...through single-site excitation. By changing the initial to the lattices, periodic oscillations of the localized quadruple state becomes a rotating doubly charged undergo charge-flipping when the rotating direction is orientation of the incident quadruple beam related quadruple mode may be obtained. The localized optical vortex (DCV) during rotation and should reversed.展开更多
基金Project supported by the State Key Program for Basic Research of China (Grant Nos.2013CB632703 and 2010CB934101)the National Natural Science Foundation of China (Grant Nos.10904078 and 60908002)+4 种基金the International Science & Technology Cooperation Program of China (Grant No.2011DFA52870)the International Cooperation Program of Tianjin (Grant No.11ZGHHZ01000)the "111"Project (Grant No.B07013)the Program for New Century Excellent Talents in University of China (Grant No.NCET-10-0507)the Specialized Research Fund for the Doctorial Program of Higher Education of China (Grant No.20120031120031)
文摘We report on theoretical investigations of beam control in one-dimensional tri-core photonic lattices (PLs). Linear splitting is illustrated in tri-core PLs; the effect of defect strength on the splitting is discussed in depth for single-wavelength light. We reveal that splitting disappears when the defect strength trends to zero, while reoccurring under nonlinearity. Multi-color splitting and active control are also proposed in such photonic structures.
基金supported by the National Natural Science Foundation of China(No.11474170)the Natural Science Foundation of Tianjin,China(No.16JCYBJC16900)
文摘An all-fiber femtosecond vortex laser based on common fiber components is constructed. It can produce femtosecond orbital angular momentum modes whose time pulse width is 398 fs. The topological charge of output orbital angular momentum (OAM) modes from this laser can be adjusted among 0, +1, and -1 easily while it is also easy to convert between continuous OAM modes and pulse OAM modes.
基金supported by the National"973"Program of China(Nos.2013CB632703 and 2013CB328702)the National Natural Science Foundation of China(Nos.60908002 and 10904078)+4 种基金the International S&T Cooperation Program of China(No.2011DFA52870)the Specialized Research Fund for the Doctoral Program of Higher Education(No.20120031120031)the International Cooperation Program of Tianjin(No.11ZGHHZ01000)the"111"Project(No.B07013)the Program for New Century Excellent Talents in University(No.NCET-10-0507)
文摘through single-site excitation. By changing the initial to the lattices, periodic oscillations of the localized quadruple state becomes a rotating doubly charged undergo charge-flipping when the rotating direction is orientation of the incident quadruple beam related quadruple mode may be obtained. The localized optical vortex (DCV) during rotation and should reversed.