Based on coupling-wave equation, two-segment DFB lasers have been analyzed, and implicit expression of their carrier density and emission wavelength has been obtained.

利用耦合波方程，对两段式DF B激光器进行理论分析，得出了激光器激射工作时两段载流子浓度和激射波长之间所满足的隐含表达式。

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Both nonreciprocal birefringent effect and variable polarization effect of microwave ferrite in the symmetrical four-pole magnetized field are discussed in the light of coupling-wave theory.

本文用耦合波理论处理了对称四磁极磁化情况下，微波铁氧体的非互易双折射效应和变极化效应。

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In this paper, the phase conjugate nature of the nonlinear coupling forward wave has been demonstrated.

本文论证了非线性耦合前向波的位相复共轭特性。

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