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.
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。
This paper describes a measuring system basing on an optical heterodyne interferometer, which utilizes a multi-mode laser diode and coupled optical fibers to adjust the coherent length of the system.
研究了一种采用多模半导体激光与耦合光纤、采取声光调制及调节相干长度的外差干涉系统。
The TEC single-mode fiber-coupled laser module is used to decrease the laser beam drift, and the high accurate and stable measurement reference can be obtained.
系统采用带有温控的半导体激光器单模光纤组件作为光源，有效地降低了激光器本身的光线漂移，为滚转角误差测量提供了高精度和高稳定性的基准光线。
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