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Properties of microstructured and photonic crystal fibers suitable for sensing applications

The concepts of microstructured and photonic crystal fibers have greatly enhanced flexibility in achieving specific propagation and guiding properties in optical fiber waveguides. Additionally, they have enabled alternative principles in light guiding and wave field shaping compared to conventional optical fibers. Besides applications in communication technology and for fiber light sources, these properties meet with increasing interest in sensing applications. The specific properties of microstructured and photonic crystal fibers are discussed in view of such applications in optical fiber sensing systems.