Optimizing the Signal to Noise Ratio of Microcavity Sensors
Optimizing the Signal to Noise Ratio of Microcavity Sensors
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DOI：
10.1109/lpt.2014.2344857
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发表时间：
2014-10-15
影响因子：
2.6
通讯作者：
Kirk, Andrew G.
中科院分区：
文献类型：
--
作者：
Cheema, M. Imran;Shi, Ce;Kirk, Andrew G.
光学微腔为生物和化学传感应用提供了一个灵敏的平台。以往的工作主要集中在通过提高腔体质量因子来优化器件性能。然而，这种方法忽略了质量因子对传感器信噪比（SNR）的影响。在这里，我们的目的是证明在理论上和实验上存在最佳参数，以实现微腔传感器的最大信噪比。虽然这里使用的是环形腔，但这个字母很容易推广到任何腔的几何形状，从而实现了各种微腔传感器的性能优化。
Optical microcavities provide a sensitive platform for biological and chemical sensing applications. Previous works have focused on optimizing the device performance by increasing the quality factor of the cavity. However, this approach overlooks the impact of the quality factor on the signal-to-noise ratio (SNR) of the sensor. Here, our purpose is to show the existence of optimum parameters, both theoretically and experimentally, for achieving maximum SNR in the microcavity sensors. Although toroidal cavities are used here, this letter is easily generalizable to any cavity geometry, enabling the performance optimization of a wide range of microcavity sensors.