A Flow Velocity Sensor Based on Polymer Optical Waveguide
A technology of flow velocity sensor and optical waveguide, which is applied in fluid velocity measurement, instrument, velocity/acceleration/impact measurement, etc. It can solve the problems of low measurement accuracy of flow velocity, complex mechanical structure, large target area, etc., and achieve high resolution and response speed, the effect of high-precision measurement
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[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0030] An embodiment of the flow rate sensor based on the polymer optical waveguide provided by the present invention is figure 1 and figure 2 as shown, figure 1 is the front view of the polymer optical waveguide-based flow rate sensor, figure 2 yes figure 1 Cross-sectional view in direction A-A, showing the movement of the light spot on the position-sensitive detector PSD. The flow velocity sensor based on polymer optical waveguide includes a laser light source and its driving circuit 1, optical fiber 2, polymer optical waveguide 3, position sensitive detector (PSD) 4 and signal processing system 5 arranged in a fixed box 6 . The polymer optical waveguide 3 is fixed and directly coupled with the output end of the optical fiber 2 during the manufacturing process, and the input end of the optical fiber 2 is connected with the laser light source ...
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