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arXiv 2409.04422physics.opticsphysics.app-phphysics.atm-clus
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通过腔体部分长度的模式折射率工程实现腔共振的选择性被动调谐

Selective Passive Tuning of Cavity Resonance by Mode Index Engineering of the Partial Length of a Cavity

Mohit Khurana, Sahar Delfan, Zhenhuan Yi

AI总结:

针对光子集成电路制造误差导致的腔体共振频率分布过宽问题,提出通过操控微环腔部分模式折射率的被动调谐方法,实现低于1/Q的调谐分辨率与高达10^3/Q的调谐范围。

摘要:

大规模光子集成电路中的腔体常因制造误差而面临共振频率分布较宽的问题。使用后处理方法调整腔体共振以最小化频率分布至关重要。我们开发了一种通过操控微环腔部分区域的模式折射率来实现被动调谐的概念。通过解析研究和数值实验,我们发现,在腔体顶部沉积一层介电材料薄膜或刻蚀该材料,能够使我们微调共振并最小化频率分布。这种多功能方法允许在单个制造步骤中,对大量腔体集合中每个腔体的共振进行选择性调谐,从而在大规模光子集成电路中提供稳健的被动调谐。我们表明,所提出的方法实现了低于1/Q的调谐分辨率,以及对于可见光到近红外波长高达10^3/Q的调谐范围。此外,该方法可应用于各种光学腔和材料配置中并进行探索。

英文摘要:

Cavities in large-scale photonic integrated circuits often suffer from a wider distribution of resonance frequencies due to fabrication errors. It is crucial to adjust the resonances of cavities using post-processing methods to minimize the frequency distribution. We have developed a concept of passive tuning by manipulating the mode index of a portion of a microring cavity. Through analytical studies and numerical experiments, we have found that depositing a thin film of dielectric material on top of the cavity or etching the material enables us to fine-tune the resonances and minimize the frequency distribution. This versatile method allows for the selective tuning of each cavity's resonance in a large set of cavities in a single fabrication step, providing robust passive tuning in large-scale photonic integrated circuits. We show that proposed method achieves tuning resolution below 1/Q and range upto 10^3/Q for visible to near-infrared wavelengths. Furthermore, this method can be applied and explored in various optical cavities and material configurations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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