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    • 89. 发明授权
    • Optical fiber sensor for measuring physical properties of liquids
    • 用于测量液体物理性能的光纤传感器
    • US5047626A
    • 1991-09-10
    • US460435
    • 1990-01-03
    • Lloyd C. BobbBarbara J. WhiteJon P. Davis
    • Lloyd C. BobbBarbara J. WhiteJon P. Davis
    • G01J9/02G01M11/00G01N21/45G01N25/18
    • G01N25/18G01M11/331G01N21/45G01J2009/0226G01J2009/0288
    • A physical property of a liquid or of any optical fiber is measured using optical fiber interferometer. A conductive material is disposed upon the surface of a region of a light transmitting optical fiber and the region having the conductive material is disposed in the liquid. Light energy is applied to one end of the fiber and transmitted light is received at the other end of the fiber. Electrical energy is applied to the conductive material disposed upon the surface of the fiber to heat the region of the fiber and cause a change in the optical path length of the light transmitted through the fiber. The physical property of the liquid or optical fiber is determined in accordance with the change in the optical path length of the received light caused by applying the electrical energy to the conductive material. A series of short energy pulses is provided and the average phase change is determined. The conductive material is gold and it encircles the fiber. The gold may be disposed on the jacket of the fiber or the jacket may be removed before disposing the gold.
    • 使用光纤干涉仪测量液体或任何光纤的物理性质。 导电材料设置在透光光纤的区域的表面上,并且具有导电材料的区域设置在液体中。 光能被施加到光纤的一端,透射光被接收在光纤的另一端。 将电能施加到设置在光纤表面上的导电材料,以加热光纤的区域并引起透过光纤的光的光程长度的变化。 根据通过将电能施加到导电材料而引起的接收光的光路长度的变化来确定液体或光纤的物理性质。 提供一系列短能脉冲,并确定平均相变。 导电材料是金,它包围纤维。 金可以设置在纤维的护套上,或者在处理金之前可以去除护套。