The coupled equation of two-wave mixing and expressions for weak beam amplification in a single mode waveguide are deduced by application of coupled wave theory.
本文利用耦合波理论分析推导了单模平面光波导中两波混合的耦合波方程和弱相干光放大率的表示式。
2
Some of us have been used to more creative ways of greeting one another, such as a friendly wave from two meters away.
我们中的一些人已经习惯了更有创意的问候方式，比如在两米开外友好地挥手。
3
We can do the exact same thing when we talk about lithium, but now instead of breaking it up into twowave functions, we're breaking it up into three wave functions because we have three electrons.