Title :
Side-projected fiber-optic velocity sensors
Author :
Ng, Seng Lee ; Tjin, Swee Chuan ; Xie, Tuqiang ; Soo, Kian Thiam
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
Side-projected dual-fiber velocity sensors with various fiber core separations for in vivo measurements were developed and tested. Good linearity between the flow velocity and the Doppler shift frequency is obtained with this sensor in both the forward (toward the sensor tip) and reverse (away from the sensor tip) flow directions. Experimental and numerical analysis of the data showed that the boundary layer along the side wall of the fiber sensor varies with the flow velocity.
Keywords :
Doppler measurement; biosensors; blood flow measurement; fibre optic sensors; laser velocimetry; velocity measurement; Doppler shift frequency; biosensors; blood flow velocity measurements; boundary layer; fiber core separations; fiber sensor; flow directions; flow velocity; in vivo measurements; numerical analysis; sensor tip; side-projected dual-fiber velocity sensors; side-projected fiber-optic velocity sensors; Fiber lasers; Fluid flow measurement; Frequency; In vivo; Optical fiber sensors; Optical fiber testing; Optical fibers; Optical scattering; Optical surface waves; Probes;
Journal_Title :
Photonics Technology Letters, IEEE
