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1)  π/4 phase-shift
π/4相移
2)  π phase shift
π相移
1.
A phase-shifted chirped fiber Bragg grating with two π phase shifts was studied theoretically and experimentally.
理论研究并实验验证了一种含有两段π相移的啁啾相移光纤光栅。
3)  0/π phase-shifter
0/π移相器
4)  π phase-shifted fiber
π相移光纤
1.
Design of double-π phase-shifted fiber Bragg gratings
双π相移光纤光栅的设计
5)  π phase transition
π相位转移率
6)  λ/4 phase-shift
λ/4相移
1.
Based on the coupled mode theory,by using the reversely recursive transmission matrix method,the switching characteristics of the λ/4 phase-shifted fiber grating and the influence of introducing chirp on the switching characteristics have been numerically studied when the reflection on the transmission facet is taken into account.
基于耦合模理论,利用逆向递推传输矩阵方法,数值研究了光纤光栅透射输出端面存在反射时λ/4相移光栅的开关特性,以及啁啾的引入对其开关性能的影响。
2.
Based on the coupled mode theory,by using the reversely recursive transmission matrix method,the switching characteristics of the λ/4 phase-shifted fiber grating and the influence of introducing chirp on the switching characteris-tics have been numerically studied when the reflection of the transmission facet is taken into consideration.
基于耦合模理论,利用逆向递推传输矩阵方法数值研究了λ/4相移光栅的双稳特性,数值研究了光纤光栅透射输出端面存在反射时λ/4相移光栅的双稳开关特性,以及啁啾的引入对其开关性能的影响。
补充资料:π, π-conjugation
分子式:
CAS号:

性质:单键和双键相互交替排列的共轭体系。最简单的为1,3-丁二烯,而苯分子则是一个具有高度对称结构的闭合共轭体系。除碳碳双键外,碳碳叁键、碳氧双键等,都可组成π,π-共轭。例如:CH2=CH—C≡CH;CH2=CH—CH=O。由π,π-共轭引起的使分子内能降低、键长发生平均化等电子效应,称为π,π-共轭效应。

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