Optical time-domain measurement of Brillouin dynamic grating spectrum in a polarization-maintaining fiber.

Department of Physics, Chung-Ang University, Seoul 156-756, Korea.
Optics Letters (Impact Factor: 3.18). 06/2009; 34(9):1381-3. DOI: 10.1364/OL.34.001381
Source: PubMed

ABSTRACT We demonstrate the distributed measurement of Brillouin dynamic grating spectra in a polarization-maintaining fiber based on time-domain analysis. Local reflection spectra of the Brillouin dynamic grating are acquired by synchronized propagation of the pump and the probe pulses based on the map of the Brillouin frequency distribution. Large temperature sensitivity as high as -50.9 MHz/ degrees C is observed with 2 m spatial resolution in 100 m range.