Packaged Optical Sensors Based on Regenerated Fiber Bragg Gratings for High Temperature Applications

We report on temperature sensors based on regenerated fiber Bragg gratings (RFBGs) for measurements up to 1100. The annealing process required to regenerate such gratings makes the optical fiber too delicate, thus making an adequate packaging necessary. Prior to the grating regeneration the optical fiber is protected with a ceramic tube which in turn is shielded with a thick metal casing. We have performed a thorough characterization of the thermo-optical response of both packaged and unpackaged RFBG sensors placing especial attention on possible residual hysteresis after several temperature cycling tests. The response and recovery times of packaged sensors were found to be, respectively, ~9 s and ~ 22 s.

[1]  Don Monroe,et al.  DECAY OF ULTRAVIOLET-INDUCED FIBER BRAGG GRATINGS , 1994 .

[2]  V. Kopp,et al.  Chiral diffraction gratings in twisted microstructured fibers. , 2010, Optics letters.

[3]  Stephen J. Mihailov,et al.  Single and low order mode interrogation of a multimode sapphire fibre Bragg grating sensor with tapered fibres , 2005, International Conference on Optical Fibre Sensors.

[4]  Salvador Sales,et al.  Chemical composition gratings in Germanium doped and Boron-Germanium co-doped fibers , 2010, Photonics Europe.

[5]  Yan-qing Lu,et al.  Miniaturized fiber taper reflective interferometer for high temperature measurement. , 2010, Optics express.

[6]  Minwei Yang,et al.  Fiber Bragg gratings with enhanced thermal stability by residual stress relaxation. , 2009, Optics express.

[7]  Kwan Seob Park,et al.  Miniature fiber-optic high temperature sensor based on a hybrid structured Fabry-Perot interferometer. , 2008, Optics letters.

[8]  Yun-Jiang Rao,et al.  Hybrid LPFG/MEFPI sensor for simultaneous measurement of high-temperature and strain , 2008, International Conference on Optical Fibre Sensors.

[9]  M. Fokine.  Underlying mechanisms, applications, and limitations of chemical composition gratings in silica based fibers , 2004 .

[10]  Youngjoo Chung,et al.  High temperature fiber sensor with high sensitivity based on core diameter mismatch. , 2008, Optics express.

[11]  J. Canning,et al.  Strong regenerated gratings , 2009, International Conference on Optical Fibre Sensors.

[12]  Bowei Zhang,et al.  High-Temperature Resistance Fiber Bragg Grating Temperature Sensor Fabrication , 2007, IEEE Sensors Journal.

[13]  J. Villatoro,et al.  Thermally stabilized PCF-based sensor for temperature measurements up to 1000 degrees C. , 2009, Optics express.

[14]  Salvador Sales,et al.  Wavelength encoded fiber sensor for extreme temperature range , 2010, European Workshop on Optical Fibre Sensors.

[15]  Michalis N. Zervas,et al.  Moving fibre/phase mask-scanning beam technique for enhanced flexibility in producing fibre gratings with uniform phase mask , 1995 .

[16]  S. Mihailov,et al.  Sapphire fiber Bragg grating sensor made using femtosecond laser radiation for ultrahigh temperature applications , 2004, IEEE Photonics Technology Letters.

[17]  John Canning,et al.  Rapid disappearance of regenerated fibre Bragg gratings at temperatures approaching 1500 °C in boron-codoped germanosilicate optical fibre , 2010, European Workshop on Optical Fibre Sensors.

[18]  John Canning,et al.  Extreme Silica Optical Fibre Gratings , 2008, Sensors.

[19]  F. Bilodeau,et al.  Single and low order mode interrogation of a multimode sapphire fibre Bragg grating sensor with tapered fibres , 2006 .