Frequency-stabilized optical frequency combs have created many high-precision applications. Accurate timing, ultralow phase noise, and narrow linewidth are prerequisites for achieving the ultimate performance of comb-based systems. Ultrastable cavity-based comb-noise stabilization methods have enabled sub–10⁻¹⁵-level frequency instability. However, these methods are complex and alignment sensitive, and their use has been mostly confined to advanced metrology laboratories. Here, we have established a simple, compact, alignment-free, and potentially low-cost all-fiber photonics-based stabilization method for generating multiple ultrastable combs. The achieved performance includes 1-femtosecond timing jitter, few times 10⁻¹⁵-level frequency instability, and <5-hertz linewidth, rivalling those of cavity-stabilized combs. This method features flexibility in configuration: As a representative example, two combs were stabilized with 180-hertz repetition rate difference and ~1-hertz relative linewidth and could be used as an ultrastable, octave-spanning dual-comb spectroscopy source. The demonstrated method constitutes a mechanically robust and reconfigurable tool for generating multiple ultrastable combs suitable for field applications.

频率稳定的光学频率梳已经创造了许多高精度应用。准确的定时，超低的相位噪声和窄的线宽是实现基于梳齿的系统最终性能的前提。基于超稳定腔的梳状噪声稳定方法已使亚^10-15级的频率不稳定。但是，这些方法很复杂且对路线敏感，并且它们的使用主要局限于高级计量实验室。在这里，我们建立了一种简单，紧凑，无对准且可能低成本的基于全光纤光子学的稳定方法，用于生成多个超稳定梳。所达到的性能包括1飞秒的定时抖动，只有10 ^-15倍级别的频率不稳定性和<5赫兹的线宽，可与腔稳定的梳子媲美。此方法具有配置灵活的特点：作为一个代表性示例，两个梳子的重复频率差为180赫兹，相对线宽约为1赫兹，因此可以用作超稳定，跨度倍频的双梳状光谱源。所证明的方法构成了一种机械坚固且可重新配置的工具，用于生成适用于现场应用的多个超稳定梳子。