Depolarization of light in a graded-index isotropic medium
Depolarization of light in a graded-index isotropic medium
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渐变折射率各向同性介质中光的去偏振
DOI：
10.1080/09500349608232883
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发表时间：
1996
影响因子：
1.3
通讯作者：
N. Petrov
中科院分区：
文献类型：
--
作者：
N. Petrov
用相干态的量子力学方法描述了入射纯偏振态通过渐变折射率多模二维光波导时的退偏效应。结果表明，由于偏振(自旋)和束流轨迹(轨道矩)的相互作用，线偏振辐射和圆偏振辐射的偏振度都随着距离的增加而减小。强调了去极化的波动性。当波长趋于零时，去偏振消失。发现了纯衍射源的偏振度对光在单模光纤中传输的影响。
The effect of depolarization of an incident pure state of polarization propagating through a graded-index multimode two-dimensional optical waveguide is described using the quantum-mechanical method of coherent states. It is shown that the degree of polarization for both the linearly and the circularly polarized radiation decreases with increasing distance owing to the interaction between the polarization (spin) and the beam trajectory (orbital moment). The wave nature of the depolarization is emphasized. The depolarization vanished when the wavelength tends to zero. Oscillations of the polarization degree of pure diffractional origin on propagation of light in a single-mode optical fibre are found.