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    • 10. 发明授权
    • Fiber optic gas sensor
    • 光纤气体传感器
    • US07792392B2
    • 2010-09-07
    • US11957746
    • 2007-12-17
    • Peng ChenMichael P. BuricPhilip R. SwinehartMokhtar S. Maklad
    • Peng ChenMichael P. BuricPhilip R. SwinehartMokhtar S. Maklad
    • G02B6/00G02B6/34
    • G01N21/7703G01F23/292G01N21/7746G01N2021/7709G01N2021/7723
    • A gas sensor includes an in-fiber resonant wavelength device provided in a fiber core at a first location. The fiber propagates a sensing light and a power light. A layer of a material is attached to the fiber at the first location. The material is able to absorb the gas at a temperature dependent gas absorption rate. The power light is used to heat the material and increases the gas absorption rate, thereby increasing sensor performance, especially at low temperatures. Further, a method is described of flash heating the gas sensor to absorb more of the gas, allowing the sensor to cool, thereby locking in the gas content of the sensor material, and taking the difference between the starting and ending resonant wavelengths as an indication of the concentration of the gas in the ambient atmosphere.
    • 气体传感器包括在第一位置处设置在光纤芯中的光纤内谐振波长装置。 光纤传播感应灯和电源灯。 材料层在第一位置附着在纤维上。 该材料能够以依赖于温度的气体吸收速率吸收气体。 功率灯用于加热材料并增加气体吸收率,从而提高传感器性能,特别是在低温下。 此外,描述了一种快速加热气体传感器以吸收更多气体的方法,允许传感器冷却,从而锁定传感器材料的气体含量,并且将起始和结束谐振波长之间的差作为指示 气体在大气中的浓度。