Distributed temperature sensing based on birefringence effect on transient Brillouin grating in a polarization-maintaining photonic crystal fiber

We demonstrate a time-domain distributed temperature sensing based on birefringence effect on transient Brillouin grating (TBG) in a polarization-maintaining photonic crystal fiber (PM-PCF), which uses two short pump pulses (2 ns) to excite a TBG and a long probe pulse (6 ns) to map the transient Br...

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Bibliographic Details
Published in:Optics letters 2009-09, Vol.34 (17), p.2590-2592
Main Authors: Dong, Yongkang, Bao, Xiaoyi, Chen, Liang
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fiber optics
Fundamental areas of phenomenology (including applications)
Gratings
Nonlinear optics
Optical elements, devices, and systems
Optics
Physics
Stimulated brillouin and rayleigh scattering
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Summary:We demonstrate a time-domain distributed temperature sensing based on birefringence effect on transient Brillouin grating (TBG) in a polarization-maintaining photonic crystal fiber (PM-PCF), which uses two short pump pulses (2 ns) to excite a TBG and a long probe pulse (6 ns) to map the transient Brillouin grating spectrum (TBGS) associated with the birefringence. The 2 ns pump pulses defines a spatial resolution of 20 cm and a temperature measurement range of a few hundred degrees Celsius, and the long probe pulse provides a narrow TBGS with a temperature resolution of 0.07 degrees C.
ISSN:0146-9592
1539-4794
DOI:10.1364/ol.34.002590