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Vol. 74, Issue 12, December 2006, pp. 834-838




Monitoring of High Pressure with Fiber Optic Sensor


Pandey N.K.*, Yadav B.C., Tripathi Anupam

Sensors and Materials Research Laboratory

University of Lucknow, U.P. India, Pin 226007

E-mail: nkp1371965@rediffmail.com, nkp1371965@yahoo.co.in

* Corresponding Author


Received: 31 October 2006   /Accepted: 26 December 2006   /Published: 29 December 2006



Abstract: Paper reports intensity modulated pressure sensor using microbending in the optical fiber embedded in the structural material. Pressure induced microbends have been created in silica clad graded index multimode optical fiber 50mm, plastic clad PCS200 and plastic clad PCS600 optical fibers embedded in the sample of araldite matrix. The samples have been tested separately with random microbending and periodic microbending of spatial periodicity Λ=5mm under high pressure cyclic loading conditions. The maximum pressure measured with PCS600 is 3.0 MPa, with PCS200 the maximum pressure measured is 1.8 MPa and that with silica clad 50mm maximum pressure measured is 1.6 MPa. The results with PCS600 optical fiber have been found to be linear and most reliable.


Keywords: Modulated pressure sensor;  Fiber optic sensor; Optical fiber


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