排序方式: 共有47条查询结果,搜索用时 15 毫秒
1.
本文利用有限元法分析了多量子阱平面光波导的传播特性,给出了任意阱数多量子阱光波导.TE模和TM模的有效折射率和TE模的强度分布.结果表明:r(势阱与势垒的厚度比)值的改变,影响波导中导模的模式数目、有效折射率、双折射和强度分布;并发现在某些情况下,均方根近似是不适用的. 相似文献
2.
3.
提出并研究两种新的量子光场态:位移二项式态和位移负二项式态.讨论了两种量子态的光子数分布、亚泊松分布特性.结果表明:位移二项式态是介于相干态与位移粒子数态之间的一种量子中间态,在不同参数下可表现亚泊松分布和超泊松分布;位移负二项式态是介于相干态与位移Susking Glogower位相态之间的量子中间态,它只表现超泊松分布.研究了它们与二能级原子在强度耦合情况下相互作用原子反转的动力学演化.
关键词: 相似文献
4.
5.
Optical and mechanical properties of hollow-core fibers with cobweb cladding structure 总被引:3,自引:0,他引:3
This paper explores the possibility of realizing a hollow-core optical fiber, whose cladding is composed of cylindrical alternating layers of air and high-index material with supporting structure. The optical properties and the design criteria of the proposed fiber are evaluated by the compact two-dimensional (2D) finite-difference time-domain (FDTD) method. In particular, the influence of the number and width of supporting strips on the leakage loss of the fiber is investigated. Furthermore, the mechanical performances of the fiber are estimated by finite-element method, confirming that hollow-core fibers with a reasonable size and number of supporting strips are reliable. 相似文献
6.
7.
8.
光子学与电子学的比较 总被引:1,自引:0,他引:1
文章对光子学与电子学的类似性和差异性方面进行比较,目的是从中得到启示,更好地把握和推进光子学的发展。 相似文献
9.
10.