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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 27, Iss. 12 — Jun. 15, 2009
  • pp: 2100–2104

Simultaneous Interrogation of a Hybrid FBG/LPG Sensor Pair Using a Monolithically Integrated Echelle Diffractive Grating

Honglei Guo, Gaozhi Xiao, Nezih Mrad, and Jianping Yao

Journal of Lightwave Technology, Vol. 27, Issue 12, pp. 2100-2104 (2009)


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Abstract

A simultaneous interrogation technique of a hybrid fiber Bragg grating (FBG) and long-period grating (LPG) sensor pair is proposed and demonstrated using a monolithically integrated echelle diffractive grating (EDG). The operation principle that is based on the monotonic temperature dependence of the EDG transmission wavelengths is presented. Initial results show that a 1-pm resolution and 24-nm interrogation range are achieved by using the proposed interrogation technique, which can effectively be implemented to interrogate hybrid FBG/LPG-based sensor pairs for the discrimination of refractive index (RI)/temperature in RI measurement. The specially designed EDG-based interrogator has the added features of low cost and compact size.

© 2009 IEEE

Citation
Honglei Guo, Gaozhi Xiao, Nezih Mrad, and Jianping Yao, "Simultaneous Interrogation of a Hybrid FBG/LPG Sensor Pair Using a Monolithically Integrated Echelle Diffractive Grating," J. Lightwave Technol. 27, 2100-2104 (2009)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-27-12-2100


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