Lab-in-a-Needle – Multiplexed Fiber Sensors for Bio-Medical Applications

在这个项目中，我们将利用我们最新开发的光学级微型光学元件划片制造能力来探索在光纤中实现针中实验室的概念。我们将集中精力对这一新的传感器概念进行详细的、主要是实验的、但也是理论上的评估，即在一根光纤的顶端多路复用几个密集分布的传感器--这是一个到目前为止几乎没有研究过的话题。计划中的任务不仅包括几个法布里-佩罗(FP)传感器腔，还包括与逝去场型传感器的组合。例如，使用几个相邻FP腔时的可实现的灵敏度和准确度、某些传感器之间可能有害的串扰、避免后一种影响的方法以及所提议的消失场传感器的激励和光收集效率等未决问题将被详细研究。

In this project, we will use our newly developed fabrication capabilities of optical-grade dicing of micro-optical elements to explore the concept of a lab-in-a-needle realized in an optical fiber. We will concentrate on a detailed, mostly experimental but also theoretical evaluation of this new sensor concept, i.e. multiplexing of several, closely spaced sensors at the tip of a single fiber – a topic that has been hardly investigated up to now. The planned tasks will not only include several Fabry-Pérot (FP) sensor cavities but also a combination with evanescent-field-type sensors. Open questions like e.g. the achievable sensitivity and accuracy when using several adjacent FP cavities, possible detrimental cross-talk among certain sensors, ways to circumvent the latter effect, as well as excitation and light collection efficiencies of the proposed evanescent field sensors will be investigated in detail.