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arXiv 1805.04089physics.optics
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具有工程双折射的双波长光纤法布里-珀罗腔

Dual-wavelength fiber Fabry-Perot cavities with engineered birefringence

Sébastien Garcia, Francesco Ferri, Konstantin Ott, Jakob Reichel, Romain Long

摘要:

提出了一种在光纤法布里-珀罗(FFP)腔中实现偏振本征模频率分裂的方法。利用多束CO $_2$激光脉冲的特定模式,在大的曲率半径范围内加工出了可控椭圆形的抛物面微镜。这种方法是通用的,并可用于生产最大化或接近零偏振模分裂腔。此外,我们实现了双波长FFP腔的精细度超过$40\,000$在780 $\,$ nm和在1559 $\,$ nm的电信范围。我们提供的直接证据表明,在FFP腔的双折射频率分裂只受几何形状的镜子,腔模式的像散需要考虑到特定的腔。

英文摘要:

We present a method to engineer the frequency splitting of polarization eigenmodes in fiber Fabry-Perot (FFP) cavities. Using specific pattern of multiple CO$_2$ laser pulses, we machine paraboloidal micromirrors with controlled elliptical shape in a large range of radius of curvature. This method is versatile and can be used to produce cavities with maximized or near-zero polarization mode splitting. In addition, we realize dual-wavelength FFP cavities with finesse exceeding $40\,000$ at 780$\,$nm and at 1559$\,$nm in the telecom range. We provide direct evidence that the birefringent frequency splitting in FFP cavities is governed only by the geometrical shape of the mirrors, and that the astigmatism of the cavity modes needs to be taken into account for specific cavities.

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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