期刊
OPTICS LETTERS
卷 34, 期 17, 页码 2590-2592出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.34.002590
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- ISIS Canada
- National Science and Engineering Research Council of Canada (NSERC)
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. (C) 2009 Optical Society of America
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