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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 24,
  • Issue 7,
  • pp. 2541-
  • (2006)

Synthesis of Optical-Coherence Function and Its Applications in Distributed and Multiplexed Optical Sensing

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Abstract

We have proposed and demonstrated in recent years a unique technique to synthesize the optical-coherence function by manipulating the frequency and the phase of lightwave. Based upon this technique, the synthesis of optical coherence function (SOCF), various distributed photonic sensing and optical-information-processing applications have been developed. In this paper, the principle of SOCF is summarized. A series of functional optical-sensing systems, including fiber-optic reflectometries, distributed stress-location sensors, multiplexed fiber Bragg grating (FBG) sensors, are introduced. Fully distributed fiber-optic strain sensing systems by Brillouin frequency shift are highlighted, and a distributed sensor based on synthesized dynamic grating is also presented. Applications in two-or three-dimensional distributed measurements, such as optical tomography of scattering medium, are also reviewed.

© 2006 IEEE

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