根据光波导理论，推算出弱导条件下光沿光纤传输场的标量近似解，给出场的各分量表达式，以便分析讨论。
Using wave guide theory, we deduce scalar approximate solution about transmissive light through a fiber weak-guide and give the expressions of field in each component.
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。
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.
弱调制介质光栅可等效为平板波导，经其衍射的高级次子波与波导模式耦合时，形成导模共振。
Weak modulated dielectric grating can be equivalent to planar waveguide. When it diffracted high-order spatial sub-wave is coupled with waveguide mode, a guided mode resonance is formed.
准TEM模假设对弱导光波导是一个相当精确的近似。
These characteristic equations are not only simple and understandable but also quite accurate for weakly guiding optical waveguides.
研究一类弱非线性内波导致的声信号幅度起伏机理。
Thirdly, the fluctuation of sound signal amplitude caused by one kind of non-linear internal waves is analyzed.
研究一类弱非线性内波导致的声信号幅度起伏机理。
Thirdly, the fluctuation of sound signal amplitude caused by one kind of non-linear internal waves is analyzed.
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