双频激光器的稳频特性与其功率调谐曲线的形状有关。
The frequency stabilizing property of two-frequency He-Ne laser depends upon the shape of the power tuning curve.
在内共振欠调谐时，系统的频响曲线呈软特性；
As internal resonance is insufficient detuning, response curves demonstrate soft characteristics;
它通过常见的谐振波长与周期的关系曲线，不用解耦合模方程就可以直接分析LPFG的振波长的漂移和调谐特性。
Through the curve of resonant wavelength versus period, we present a new method to analyze the shift of resonant wavelength of LPFG during UV laser writing without solving the coupled-mode equations.
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