反常折射

反常折射引起的地面天文观测残差的周年变化

The annual variation of optical astronomical observational residuals caused by the anomalous refraction

反常折射已成为传统天体测量学的主要误差来源。

Anomalous refraction is believed to be the main error source for classical astrometry .

负折射介质具有许多独特的物理性质，即反常折射现象、自聚焦效应、逆Doppler频移和反常Cerenkov辐射等，这些性质为人们提供了控制光的全新手段，具有良好的应用前景。

Negative refractive index medium has many special properties , such as abnormal refractive phenomena , self-compression effects , anti-Doppler frequency move and abnormal Cerenkov radiation . These properties provide new ways to control light and a good vision of application for people .

研究大气反常折射的迫切性

The Urgency for the Study of the Abnormal Refraction

反常折射对时纬观测影响的计算方法。作为应用实例，本文计算了长江三角洲地区的大气光学面斜倾、反常折射及其对时纬观测的影响，并作了初步分析。

The method to calculate the influence of anomalous refraction on time-latitude observations .

结果表明，对于一维光子晶体，在第一能带内，存在反常折射现象。

For the one-dimensional photonic crystals , there is abnormal refraction in the first band .

结果表明用反常折射可以部分地解释我国天文观测残差的周年变化。

The results show that the annual variations in time and latitude determinations in China can be partially explained with the anomalous refraction .

在反常色散的双折射光纤中传输的亮孤子对之间由于耦合周期性地交换能量，一个亮孤子可把能量完全传给另一个亮孤子，因此双折射光纤可作亮孤子开关。

Bright soliton pairs propagating in the birefringent fiber with the anomalous dispersion exchange the energy periodically by the couple between them .