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arXiv 0807.3494physics.opticsphysics.ins-det
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optical fiber在低相噪微波信号产生和测量中的应用

Applications of the optical fiber to the generation and to the measurement of low-phase-noise microwave signals

Kirill Volyanskiy, Johann Cussey, Herve Tavernier, Patrice Salzenstein, Gerard Sauvage, Laurent Larger, Enrico Rubiola

摘要:

用作微波延迟线的光纤具有高稳定性和低噪声,并且可以在宽带宽(约40 GHz,受光电元件的限制)中实现长延迟(>100微秒)。因此,它被用作微波振荡器的频率基准和相位噪声测量的基准频率。该光纤适用于测量振荡器的稳定性,灵敏度为1 E-12。在相关和平均之后,用两个独立的延迟线获得增强的灵敏度。在振荡器中插入延迟线,可实现1 E-12中器件的短期稳定性。频率可以在10-100 kHz范围内以反延迟的倍数步进设置。本文在现有参考文献的基础上增加了大量的工程和实践知识,包括对1/f噪声的理解、校准、降低仪器背景的互谱技术的分析、振荡器的相位噪声模型以及振荡器模型的实验测试。

英文摘要:

The optical fiber used as a microwave delay line exhibits high stability and low noise and makes accessible a long delay (>100 microseconds) in a wide bandwidth (about 40 GHz, limited by the optronic components). Hence, it finds applications as the frequency reference in microwave oscillators and as the reference discriminator for the measurement of phase noise. The fiber is suitable to measure the oscillator stability with a sensitivity of parts in 1E-12. Enhanced sensitivity is obtained with two independent delay lines, after correlating and averaging. Short-term stability of parts in 1E-12 is achieved inserting the delay line in an oscillator. The frequency can be set in steps multiple of the inverse delay, which is in the 10-100 kHz region. This article adds to the available references a considerable amount of engineering and practical knowledge, the understanding of 1/f noise, calibration, the analysis of the cross-spectrum technique to reduce the instrument background, the phase-noise model of the oscillator, and the experimental test of the oscillator model.

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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