Abstract

The effects of the intensity modulation (IM) of light source on fiber-distributed sensors based on Brillouin optical correlation domain analysis (BOCDA) are analyzed by numerical simulation, and the results are experimentally confirmed. We show that the shape of the Brillouin gain spectrum in the BOCDA system has a particular dependence on the optical spectrum of light source and that it can be controlled and tailored by proper modification of the optical spectrum using an additional IM. In the experiments, we applied several IM waveforms based on the simulation results for confirmation. Additionally, a distributed strain measurement along a 1-km optical fiber with a 30-cm spatial resolution is demonstrated by applying a proper IM scheme, which is the longest range reported using the BOCDA system.

© 2007 IEEE

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2006 (2)

2005 (2)

S. B. Cho, Y. G. Kim, J. S. Heo, J. J. Lee, "Pulse width dependence of Brillouin frequency in single mode optical fibers," Opt. Express 13, 9472-9479 (2005).

M. N. Alahbabi, Y. T. Cho, T. P. Newson, "150-km-range distributed temperature sensor based on coherent detection of spontaneous Brillouin backscatter and in-line Raman amplification," J. Opt. Soc. Amer. B, Opt. Phys. 22, 1321-1324 (2005).

2004 (1)

T. Yamauchi, K. Hotate, "Performance evaluation of Brillouin optical correlation domain analysis for fiber optic distributed strain sensing by numerical simulation," Proc. SPIE 5589, 164-173 (2004).

2000 (1)

K. Hotate, T. Hasegawa, "Measurement of Brillouin gain spectrum distribution along an optical fiber using a correlation-based technique—Proposal, experiment and simulation," IEICE Trans. Electron. E83-C, 405-412 (2000).

1997 (1)

M. Nikles, L. Thévenaz, P. Robert, "Brillouin gain spectrum characterization in single-mode optical fibers," J. Lightw. Technol. 15, 1842-1851 (1997).

1993 (1)

1990 (1)

T. Horiguchi, T. Kurashima, M. Tateda, "A technique to measure distributed strain in optical fibers," IEEE Photon. Technol. Lett. 2, 352-354 (1990).

IEEE Photon. Technol. Lett. (1)

T. Horiguchi, T. Kurashima, M. Tateda, "A technique to measure distributed strain in optical fibers," IEEE Photon. Technol. Lett. 2, 352-354 (1990).

IEICE Trans. Electron. (1)

K. Hotate, T. Hasegawa, "Measurement of Brillouin gain spectrum distribution along an optical fiber using a correlation-based technique—Proposal, experiment and simulation," IEICE Trans. Electron. E83-C, 405-412 (2000).

J. Lightw. Technol. (1)

M. Nikles, L. Thévenaz, P. Robert, "Brillouin gain spectrum characterization in single-mode optical fibers," J. Lightw. Technol. 15, 1842-1851 (1997).

J. Opt. Soc. Amer. B, Opt. Phys. (1)

M. N. Alahbabi, Y. T. Cho, T. P. Newson, "150-km-range distributed temperature sensor based on coherent detection of spontaneous Brillouin backscatter and in-line Raman amplification," J. Opt. Soc. Amer. B, Opt. Phys. 22, 1321-1324 (2005).

Opt. Express (2)

Opt. Lett. (2)

Proc. SPIE (1)

T. Yamauchi, K. Hotate, "Performance evaluation of Brillouin optical correlation domain analysis for fiber optic distributed strain sensing by numerical simulation," Proc. SPIE 5589, 164-173 (2004).

Other (1)

K. Hotate, S. S. L. Ong, "Dynamic strain measurement at 50 Hz using a Brillouin optical correlation domain analysis based fiber optic sensor," Proc. CLEO/Pacific Rim (2003) pp. 672.

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