摘要：
Influence of space-time focusing on spatiotemporal instability in dispersive self-focusing media is investigated on the basis of a modified nonlinear Schrodinger equation (NLSE) beyond the slowly varying envelope approximation. It is found that, for both normal and anomalous dispersions, space-time focusing may lead to the appearance of new instability regions. Space-time focusing influences the original spectra obtained using the standard NLSE mainly by shrinking the instability regions, especially in the case of normal dispersion.
摘要：
冯·莱特(Georg Henryk Von Wright,1916-)是芬兰逻辑学家和哲学家,是现代道义逻辑的先驱.1951年冯·莱特的经典论文<道义逻辑>一文的发表,使道义逻辑的发展前进了重要的一步.在这篇文章中,冯·莱特提出了第一个富有生命力的道义逻辑系统.它的出现标志着现代道义逻辑历史的开端.
期刊：
Proceedings of SPIE - The International Society for Optical Engineering,1994年2070:525-527 ISSN：0277-786X
作者机构：
[SUN, CY] HENGYANG TEACHERS COLL,DEPT PHYS,HENGYANG 421008,PEOPLES R CHINA.
会议名称：
Fiber Optic and Laser Sensors XI
会议时间：
Boston, MA, United States
会议论文集名称：
Fiber Optic and Laser Sensors XI
摘要：
In this paper, the possible survey of a high-pressure field by using dual core fiber sensors and a differentiator electric bridge is described. Also, the interaction between high-pressure field and a dual core fiber nonlinear coupler is discussed, using the analyzed theory. We have obtained the formula of the theory and some correlative experimental results. We can measure high-pressure (2.2 * 10<sup>6</sup> V) by using dual core fiber sensors and a differentiator bridge.
期刊：
Proceedings of SPIE - The International Society for Optical Engineering,1993年1973:115-118 ISSN：0277-786X
通讯作者：
Sun, Cheng-Yuan
作者机构：
[Sun, Cheng-Yuan; Yang, Yang] Hengyang Teachers' Coll., Hengyang, City, Hunan, China
会议名称：
Passive Fiber Optic Components and Their Reliability
会议时间：
Berlin, Germany
会议论文集名称：
Passive Fiber Optic Components and Their Reliability
摘要：
The problem of monomode fiber polarization produced by the noncircularity of core and fiber strain has been discussed by M. Moneric and S. R. Norman. The experimental results have shown that the frequency shift effect is caused by a fiber core which has a few nonlinear optical activity substances in monomode fiber and it decreases after being shone by monowavelength photo. The frequency shift effect is not Doppler frequency shift or dispersion frequency shift. In this paper, the experimental results have been analyzed using the molecular's obstructing internal rotation theory.
期刊：
Proceedings of SPIE - The International Society for Optical Engineering,1990年1230:202-203 ISSN：0277-786X
通讯作者：
Sun, Chen-Yuan
作者机构：
[Sun, Chen-Yuan] Hengyang Teachers' Coll, Huanan, China
会议名称：
International Conference on Optoelectronic Science and Engineering '90
会议时间：
Chicago, IL, United States
会议论文集名称：
International Conference on Optoelectronic Science and Engineering '90
摘要：
The chemical reaction in liquor results in the nonlinear index of refraction which modulates the nonlinear expansion of He-Ne laser transmission light field in space. The speckling deviation angle of equation can be obtained theoretically and the tangent of the characteristic curve of the light field can be obtained with the help of optoelectronic detector and optoelectronic Automatic Data Processing (ADP). Then we can survey the velocity constant in chemical reaction by computing temperature gradient in the index.
