CAJ | 학술논문

光纤不等臂干涉仪是光纤稳频式激光器的重要部分，它使激光频率的波动反映为干涉仪输出的相位扰动，从而利用干涉仪作为参考可以对激光的频率噪声进行抑制。通过对实验中采用的麦克尔逊光纤干涉仪进行研究，经过理论推导和实验测量，结果表明：采用光纤不等臂干涉仪的方法对激光进行稳频，可以使激光低频处的频率噪声得到较大的抑制，并且激光稳频过程中反馈环路的控制带宽主要受限于光纤不等臂干涉仪的时间延迟之差。
광섬불등비간섭의시광섬은빈식격광기적중요부분，타사격광빈솔적파동반영위간섭의수출적상위우동，종이이용간섭의작위삼고가이대격광적빈솔조성진행억제。통과대실험중채용적맥극이손광섬간섭의진행연구，경과이론추도화실험측량，결과표명：채용광섬불등비간섭의적방법대격광진행은빈，가이사격광저빈처적빈솔조성득도교대적억제，병차격광은빈과정중반궤배로적공제대관주요수한우광섬불등비간섭의적시간연지지차。
The fiber interferometer with length-unbalanced arms is an important part of fiber-stabilized laser which can transform frequency fluctuation of laser into phase fluctuation at the output of the interferometer. Therefore, the frequency noise of the laser can be suppressed by using the interferometer as a reference. The fiber-based Michelson interferometer applied in this experiment is studied, both theoretically and experimentally. It demonstrates that the low frequency noise of the laser can be greatly suppressed by using a Michelson interferometer with length-unbalanced fiber arms, and the control bandwidth of frequency stabilization is mainly determined by unbalanced-time-delay of the fiber interferometer.