期刊
OPTICS LETTERS
卷 35, 期 2, 页码 193-195出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.35.000193
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- ISIS Canada
- Natural Sciences and Engineering Research Council (NSERC)
We report on what we believe to be the first truly distributed birefringence measurement of polarization-maintaining fibers (PMFs) based on transient Brillouin grating (TBG). A TBG is created by two short pump pulses in the slow axis of the PMF, and then the birefringence-related TBG spectrum is mapped by scanning a probe pulse launched in the fast axis, where the local birefringence can be calculated using the birefringence induced frequency shift. Two types of widely used PMFs, bow-tie and panda, with a length of 8 m were measured at a spatial resolution of 20 cm, and the results show that the birefringence features a periodic variation, and their variation ranges are similar to 2.4 x 10(-6) and 1.3 x 10(-6) along the test fibers, respectively. (C) 2010 Optical Society of America
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