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Transportable cavity-stabilized laser system for optical carrier frequency transmission experiments

机译：用于光载波频率传输实验的可移动腔稳定激光系统

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We report the design and performance of a transportable laser system at 1543 nm, together with its application as the source for a demonstration of optical carrier frequency transmission over 118 km of an installed dark fiber network. The laser system is based around an optical reference cavity featuring an elastic mounting that bonds the cavity to its support, enabling the cavity to be transported without additional clamping. The cavity exhibits passive fractional frequency insensitivity to vibration along the optical axis of 2.0 x 10(-11) m(-1) s(2). With active fiber noise cancellation, the optical carrier frequency transmission achieves a fractional frequency instability, measured at the user end, of 2.6 x 10(-16) at 1 s, averaging down to below 3 x 10(-18) after 20,000 s. The fractional frequency accuracy of the transfer is better than 3 x 10(-18). This level of performance is sufficient for comparison of state-of-the-art optical frequency standards and is achieved in an urban fiber environment. (C) 2014 Optical Society of America
机译：我们报告了1543 nm处可移动激光系统的设计和性能，以及其作为演示源的信号源的应用，该系统演示了已安装的暗光纤网络在118 km上的光载波频率传输。激光系统以光学参考腔为基础，该参考腔具有弹性安装，可将腔粘合到其支撑上，从而无需额外的夹紧即可传输腔。空腔对沿光轴2.0 x 10（-11）m（-1）s（2）的振动表现出无源的分数频率不敏感。通过主动消除光纤噪声，光载波频率传输在1 s时在用户端测得的分数频率不稳定性为2.6 x 10（-16），在20,000 s后平均降至3 x 10（-18）以下。传输的小数频率精度优于3 x 10（-18）。这种性能水平足以比较最新的光频率标准，并且可以在城市光纤环境中实现。 （C）2014年美国眼镜学会

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