Optical frequency synthesizer with an integrated erbium tunable laser.,Light: Science & Applications

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Optical frequency synthesizer with an integrated erbium tunable laser.
Light: Science & Applications ( IF 20.6 ) Pub Date : 2019-12-18 , DOI: 10.1038/s41377-019-0233-z
Ming Xin ₁ , Nanxi Li _{1,

2,

3} , Neetesh Singh ₁ , Alfonso Ruocco ₁ , Zhan Su _{1,

4} , Emir Salih Magden _{1,

5} , Jelena Notaros ₁ , Diedrik Vermeulen _{1,

4} , Erich P Ippen ₁ , Michael R Watts ₁ , Franz X Kärtner _{1,

6}

Affiliation

Optical frequency synthesizers have widespread applications in optical spectroscopy, frequency metrology, and many other fields. However, their applicability is currently limited by size, cost, and power consumption. Silicon photonics technology, which is compatible with complementary-metal-oxide-semiconductor fabrication processes, provides a low-cost, compact size, lightweight, and low-power-consumption solution. In this work, we demonstrate an optical frequency synthesizer using a fully integrated silicon-based tunable laser. The synthesizer can be self-calibrated by tuning the repetition rate of the internal mode-locked laser. A 20 nm tuning range from 1544 to 1564 nm is achieved with ~10-13 frequency instability at 10 s averaging time. Its flexibility and fast reconfigurability are also demonstrated by fine tuning the synthesizer and generating arbitrary specified patterns over time-frequency coordinates. This work promotes the frequency stability of silicon-based integrated tunable lasers and paves the way toward chip-scale low-cost optical frequency synthesizers.

中文翻译：

具有集成frequency可调激光器的光频率合成器。

光学频率合成器在光谱学，频率计量学和许多其他领域中具有广泛的应用。但是，它们的适用性目前受到尺寸，成本和功耗的限制。与互补金属氧化物半导体制造工艺兼容的硅光子技术提供了一种低成本，紧凑的尺寸，轻巧的低功耗解决方案。在这项工作中，我们演示了一种使用完全集成的基于硅的可调谐激光器的光频率合成器。合成器可以通过调整内部锁模激光器的重复频率进行自校准。在10 s的平均时间内，大约10-13的频率不稳定性实现了从1544至1564 nm的20 nm调谐范围。通过对合成器进行微调并在时频坐标上生成任意指定的模式，也证明了其灵活性和快速的可重新配置性。这项工作提高了硅基集成可调激光器的频率稳定性，并为芯片级低成本光频率合成器铺平了道路。

更新日期：2019-12-18

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