This paper studies the important effect of feedback delay on the unstable output of ringcavity laser system, especially the route to chaos in small delay time.
The influence of the optical length, the output couple coefficient of the optical fiber ringcavity upon the STF and the coherence of the loss is also analyzed.
结合光纤环光学长度和耦合输出系数，就损耗对光纤环光谱传递函数和相干性的影响进行了分析讨论。
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These methods can also be applied to analysing the ringcavity of the laser gyro and then the diameter of the gain capillary can be determined with the given cavity length.