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本申请涉及具有光子膜的多功能纤维光学燃油传感器系统。燃油感测系统利用包含由直接带隙半导体材料(例如砷化镓)制成的膜的纤维光学传感器,膜与位于燃油箱底部的密封的传感器组件内的光纤形成光学共振腔。燃油箱内的光纤不暴露于燃油。由膜的底面和内部光纤的远端的表面形成的光学共振腔能够起法布里珀罗光谱仪的作用。在不同的波长下操作的多个光源和多个光谱仪可以经由燃油箱内的光纤、穿过燃油箱的壁的密封的纤维光学连接器和位于燃油箱外部的纤维光学耦合器耦合至膜的面对表面。
This application relates to a multifunctional fiber optical fuel sensor system having a photonic film. The fuel sensing system utilizes a fiber optic sensor containing a film made of a direct bandgap semiconductor material such as gallium arsenide to form an optical resonant cavity with the optical fiber within the sealed sensor assembly at the bottom of the fuel tank. The fiber in the fuel tank is not exposed to fuel. An optical resonant cavity formed by the bottom surface of the film and the distal surface of the inner fiber is capable of functioning as a Fabry-Perot spectrometer. Multiple light sources and multiple spectrometers operating at different wavelengths may be coupled to the membrane face via fiber optics within the fuel tank, sealed fiber optic connectors through the wall of the fuel tank, and fiber optic couplers located external to the fuel tank To the surface.