Polarimetric distributed feedback fiber laser sensor for simultaneous strain and temperature measurements.

We report the application of a dual polarization distributed feedback (DFB) fiber laser as a strain and temperature sensor. By measurement of the absolute wavelength of one polarization as well as the polarization beat frequency, strain and temperature were determined simultaneously. The sensor has an accuracy of +3 microepsilon and +/-0.04 degrees C. Self-heating of the DFB fiber laser as a function of pump power was measured with this sensor.

[1]  B. Y. Kim,et al.  Perturbation effects on mode propagation in highly elliptical core two-mode fibers , 1990 .

[2]  J. S. Sirkis,et al.  Simultaneously measuring temperature and strain using optical fiber microcavities , 1997 .

[3]  J. T. Kringlebotn,et al.  Polarimetric Er(3+)-doped fiber distributed-feedback laser sensor for differential pressure and force measurements. , 1996, Optics letters.

[4]  D N Payne,et al.  Er(3+):Yb(3+)-codoped fiber distributed-feedback laser. , 1994, Optics letters.

[5]  G. Meltz,et al.  Polarimetric heterodyning Bragg-grating fiber-laser sensor. , 1993, Optics letters.

[6]  H. K. Kim,et al.  Polarization control of polarimetric fiber-laser sensors. , 1993, Optics letters.

[7]  G. Meltz,et al.  Formation of Bragg gratings in optical fibers by a transverse holographic method. , 1989, Optics letters.

[8]  J. L. Cruz,et al.  Temperature-independent strain sensor using a chirped Bragg grating in a tapered optical fibre , 1995 .

[9]  W W Morey,et al.  Fiber-optic Bragg grating strain sensor with drift-compensated high-resolution interferometric wavelength-shift detection. , 1993, Optics letters.

[10]  S. Rashleigh.  Origins and control of polarization effects in single-mode fibers (A) , 1982 .

[11]  J. Bokor,et al.  Bragg gratings fabricated in monomode photosensitive optical fiber by UV exposure through a phase mask , 1993 .

[12]  T. Coroy,et al.  A Bragg grating-tuned fiber laser strain sensor system , 1993, IEEE Photonics Technology Letters.

[13]  John P. Dakin,et al.  Discrimination between strain and temperature effects using dual-wavelength fibre grating sensors , 1994 .

[14]  A. T. Alavie,et al.  A multiplexed Bragg grating fiber laser sensor system , 1993, IEEE Photonics Technology Letters.

[15]  G. Ball,et al.  Single- and multipoint fiber-laser sensors , 1993, IEEE Photonics Technology Letters.

[16]  K. Himeno,et al.  Simultaneous Measurement of Temperature and Strain using PANDA Fiber Grating , 1997 .

[17]  P. Varming,et al.  Five wavelength DFB fibre laser source for WDM systems , 1997 .