Link to the University of Pittsburgh Homepage
Link to the University Library System Homepage Link to the Contact Us Form

X-probe flow sensor using self-powered active fiber Bragg gratings

Jewart, C and McMillen, B and Cho, SK and Chen, KP (2006) X-probe flow sensor using self-powered active fiber Bragg gratings. Sensors and Actuators, A: Physical, 127 (1). 63 - 68. ISSN 0924-4247

[img] Plain Text (licence)
Available under License : See the attached license file.

Download (1kB)


A thermal X-probe sensor using self-powered fiber Bragg gratings (FBGs) has been developed to measure both magnitude and direction of two-dimensional gas flows based on convective heat transfer principles. The flow sensor employs two cross-mounted FBGs (X-probe), which are heated by light carried in the same fiber that contains FBGs. When the power light is turned off, the FBGs are used to measure the temperature of the surrounding fluids. When the power light is turned on, in-fiber diode laser light is leaked out of the fiber and is absorbed by the surrounding metallic coating to raise the temperature of the fiber gratings. The convective heat removal by incoming gas flows changes the temperature of the fibers and, as a result, the resonance wavelengths of the heated FBGs are shifted. The FBG sensor is calibrated for air flows of speeds from 0.3 to 20 m/s and a yaw angle from -45°to 45°, respectively. Air flow tests indicate the flow speed and the direction deduced from the sensors are in good agreement with the actual flow conditions confirming the feasibility of the present sensor. © 2005 Elsevier B.V. All rights reserved.


Social Networking:
Share |


Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Jewart, C
McMillen, B
Cho, SKskcho@pitt.eduSKCHO0000-0001-7283-8839
Chen, KPpec9@pitt.eduPEC90000-0002-4830-0817
Date: 28 February 2006
Date Type: Publication
Journal or Publication Title: Sensors and Actuators, A: Physical
Volume: 127
Number: 1
Page Range: 63 - 68
DOI or Unique Handle: 10.1016/j.sna.2005.12.024
Schools and Programs: Swanson School of Engineering > Electrical and Computer Engineering
Refereed: Yes
ISSN: 0924-4247
Date Deposited: 01 Jul 2014 17:38
Last Modified: 15 Jan 2021 15:55


Monthly Views for the past 3 years

Plum Analytics

Actions (login required)

View Item View Item