Tri-Axial Fiber Grating Sensor

FEATURES Alignment tabs available. Compatible with full line of fiber grating sensors Applications Multidimensional strain field measurements.

(US Patents 5,591,965; 5,869,835 and Patents Pending)

Product Description

The Tri-axial Fiber Grating Sensor is an optical sensor capable of measuring two transverse strains orthogonal to the longitudinal axis of the fiber as well as longitudinal strain. It is only 135 microns in diameter and ideal for embedded applications requiring a non-intrusive, passive sensor with high EMI resistance capable of measuring transverse or shear strain.

Specifications @ T_ambient = 20°C

Center Wavelength (nm): 1300 ± 0.5,  1550 ± 0.5

FWHM (nm): 0.15 ± 0.02

Reflectivity (%): >80

Annealing (°C): 300

Proof test level (Kpsi): 100

Sensor Calibration

At this time we do not offer a calibration service.  The calibration matrix relating peak positions to temperature and axial and transverse strains is likely to be very similar to those found in the following papers:

E. Udd, W. L. Schulz, J. M. Seim, "Advances Fiber Optic Sensors Capable of Multiparameter Sensing", SPIE Proceedings, Vol. 3489, p.66, 1998.

 

 

D. V. Nelson, A. Makino, C. Lawrence, J. Seim, W. Schulz, E. Udd, "Determination of the K-Matrix for the Multi-Parameter Fiber Grating Sensor in AD072 Fibercore Fiber", SPIE Proceedings, Vol. 3489, p. 79, 1998.

 

 

E. Udd, W. L. Schulz, J. M. Seim, D. V. Nelson, A. Makino, "Transverse Fiber Grating Strain Sensors Based on Dual Overlaid Fiber Gratings on Polarization-Preserving Fibers", SPIE Proceedings, Vol. 3330, p. 253. 1998.

 

 

C. M. Lawrence, D. V. Nelson, E. Udd, "Measurement of Transverse Strains with Fiber Bragg Gratings", Proc. SPIE Vol. 3042, p. 218, 1997.

 

 

E. Udd, C. M. Lawrence, D. V. Nelson, "Development of a Three-Axis Strain and Temperature Fiber Optic Grating Sensor", Proc. SPIE Vol. 3042, p. 229, 1997.

 

 

C. M. Lawrence, D. V. Nelson, A. Makino, E. Udd, "Modeling of the Multiparameter Bragg Grating Sensor", Proc. SPIE Vol. 3180, p. 42, 1997.

 

 

E. Udd, C. M. Lawrence, D. V. Nelson, "Progress on Developing a Multiaxis Fiber Optic Strain Sensor", Proc. SPIE Vol. 3180, p. 50, 1997.

 

 

C. M. Lawrence, D. V. Nelson, E. Udd, "Multiparameter Sensing with Fiber Bragg Gratings", Proc. SPIE Vol. 2872, p. 24, 1996.

 

 

E. Udd, D. V. Nelson, C. M. Lawrence, B. A. Ferguson, "Three-Axis Strain and Temperature Fiber Optic Grating Sensor", Proc. SPIE Vol. 2718, p. 104, 1996.

 

 

E. Udd, D. Nelson, C. Lawrence, J. R. Spingarn and B. Ferguson, "Three Axis Strain and Temperature Sensor", Proceedings of OFS-11, Sapporo, Japan, May, 1996.

 

 

E. Udd, D. V. Nelson, C. M. Lawrence and B. A. Ferguson, "Three Axis Strain Plus Temperature Fiber Grating Sensor", Proceeding of SPIE, Vol. 2718, 1996.

Blue Road Research reserves the right to make changes in design, specifications, and other information at any time without prior notice. Information in this data sheet is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.