在含涂覆层的标准通信光纤中,用红外飞秒激光直接写入长周期光纤光栅(long period fiber gratings,LPFGs),并通过理论和实验分析,研究含涂覆层LPFGs的轴向应变特性.分析结果表明,与去除涂覆层的LPFGs相比,涂覆层的存在不仅增强了LPFGs...在含涂覆层的标准通信光纤中,用红外飞秒激光直接写入长周期光纤光栅(long period fiber gratings,LPFGs),并通过理论和实验分析,研究含涂覆层LPFGs的轴向应变特性.分析结果表明,与去除涂覆层的LPFGs相比,涂覆层的存在不仅增强了LPFGs的机械强度,同时有效地抑制了LPFGs由外加应变引起的谐振波长偏移.基于以上优点,含涂覆层的LPFGs若作为带阻滤波器或增益平坦器,将有良好的机械可靠性和波长应变稳定性.展开更多
This paper studies the propagation of dipole solitons in highly nonlocal medium by using the variational method.It finds that the dipole solitons will be stable when the input power obeys a restrict value.When the inc...This paper studies the propagation of dipole solitons in highly nonlocal medium by using the variational method.It finds that the dipole solitons will be stable when the input power obeys a restrict value.When the incident power does not satisfy the stable conditions,the nonlocal accessible dipole solitons will undergo linear harmonic oscillation.It shows such evolution behaviours in detail.展开更多
This paper studies analytically and numerically the dynamics of two-dimensional elliptical Gaussian solitons in a "double-self-focusing" synthetic nonlocal media featuring elliptical and circular Gaussian re...This paper studies analytically and numerically the dynamics of two-dimensional elliptical Gaussian solitons in a "double-self-focusing" synthetic nonlocal media featuring elliptical and circular Gaussian response with different degrees of nonlocality.Based on the variational approach,it obtains the approximately analytical solution of such Gaussian elliptical solitons.It also computes the stability of the solitons by numerical simulations.展开更多
文摘在含涂覆层的标准通信光纤中,用红外飞秒激光直接写入长周期光纤光栅(long period fiber gratings,LPFGs),并通过理论和实验分析,研究含涂覆层LPFGs的轴向应变特性.分析结果表明,与去除涂覆层的LPFGs相比,涂覆层的存在不仅增强了LPFGs的机械强度,同时有效地抑制了LPFGs由外加应变引起的谐振波长偏移.基于以上优点,含涂覆层的LPFGs若作为带阻滤波器或增益平坦器,将有良好的机械可靠性和波长应变稳定性.
基金Project supported by China and Shanghai Postdoctoral Science Foundation （Grant No 2004036317）, Shanghai Key Laboratory of Special Fiber 0ptics （Shanghai University）, the National Natural Science Foundation of China （Grant No 60377025）, Science and Technology Commission of Shanghai Municipal （Grant Nos 03QMH1405 and 04JC14036） and the Shanghai Leading Academic Discipline Program （Grant Nos T0102 and T0104）.
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 60677030 and 60808002)the Shanghai Committee of Science and Technology,China (Grant No. 08JC14097)the Shanghai Leading Academic Discipline Program(Grant No. S30105)
文摘This paper studies the propagation of dipole solitons in highly nonlocal medium by using the variational method.It finds that the dipole solitons will be stable when the input power obeys a restrict value.When the incident power does not satisfy the stable conditions,the nonlocal accessible dipole solitons will undergo linear harmonic oscillation.It shows such evolution behaviours in detail.
基金Project supported by the National Natural Science Foundation of China (Grant No. 60808002)the Shanghai Leading Academic Discipline Program,China (Grant No. S30105)
文摘This paper studies analytically and numerically the dynamics of two-dimensional elliptical Gaussian solitons in a "double-self-focusing" synthetic nonlocal media featuring elliptical and circular Gaussian response with different degrees of nonlocality.Based on the variational approach,it obtains the approximately analytical solution of such Gaussian elliptical solitons.It also computes the stability of the solitons by numerical simulations.
