无源光相位噪声消除
Passive Optical Phase Noise Cancellation
摘要：
我们报告的实现的光学相位噪声消除技术，通过被动地嵌入到一个射频（RF）信号的光学相位信息和移动的光学频率的相位噪声引入的光学相位扰动的量。由于开环设计，既不需要鉴相，也不需要主动相位跟踪，解决了传统相位噪声抵消中补偿速度有限、相位/定时抖动有限等技术问题。我们的实验表明，这种技术保持了相同的延迟限制带宽和相位噪声抑制能力，在传统的技术，但显着缩短了响应速度和相位恢复时间。无源退耦光学相位微扰在光学频率标准比较和未来光学原子钟的钟表机构领域代表了一种强大的技术，目前正在认真研究国际时标的潜在重新定义。
英文摘要：
We report on the realization of an optical phase noise cancellation technique by passively embedding the optical phase information into a radio frequency (RF) signal and shifting the optical frequency with the amount of phase noise introduced by optical phase perturbations. Neither phase discrimination nor active phase tracking is required due to the open-loop design, mitigating some technical problems, such as the limited compensation speed and the finite phase/timing jitter, in conventional phase noise cancellation. We experimentally demonstrate that this technique maintains the same delay-limited bandwidth and phase noise suppression capability as in conventional techniques, but significantly shortens the response speed and phase recovery time. Passive decoupling optical phase perturbation represents a powerful technique in the domains of optical frequency standard comparisons and clockworks for future optical atomic clocks, which are now under serious investigation for a potential redefinition of the International Time Scale.
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