Wolthuis R, Mitchell G, Hartl J, Saaski E
MetriCor Inc., Woodinville, WA 98072.
IEEE Trans Biomed Eng. 1993 Mar;40(3):298-302. doi: 10.1109/10.216415.
A dual function sensor system has been developed for measuring pressure and temperature at the tip of a single optical fiber. The sensor contains three parts: a filter band-edge shift temperature based spectral modulation pressure sensor. The sensor system uses a separate and distinct LED for interrogating each sensor, three 100/140 microns step-index fused couplers for managing light, and separate paired photodiode assemblies for analyzing the return light signal from each sensor. In bench tests, each sensor performed to specification and, importantly, there was no crosstalk between sensors. This dual function sensor design has potential catheter applications where catheter size must be kept to an absolute minimum.
已开发出一种双功能传感器系统，用于测量单根光纤尖端的压力和温度。该传感器包含三个部分：一个基于滤光带边缘位移温度的光谱调制压力传感器。该传感器系统使用一个单独且不同的发光二极管来询问每个传感器，三个100/140微米阶跃折射率熔接耦合器来管理光，以及单独的配对光电二极管组件来分析来自每个传感器的返回光信号。在台架试验中，每个传感器都达到了规格要求，重要的是，传感器之间没有串扰。这种双功能传感器设计在导管尺寸必须保持绝对最小的导管应用中具有潜力。
