Suspended Core Size Effect in Interaction of Longitudinal Acoustic Waves and Fiber Bragg Gratings

in: Temporal Proceedings (2013)
Silva, Ricardo E.; Hartung, Alexander; Rothhardt, Manfred; Pohl, Alexandre A. P.; Bartelt, Hartmut
The interaction between longitudinal acoustic waves and Bragg gratings is numerically investigated for suspended core fibers. The incicle core is increased from 1 to 6.6 µm and the mechanical properties and the grating properties are calculated using a finite element method and a transfer matrix method. Interestingly, while the generated strain in the core increases with decreasing core diameter, the achievable side lobe reflectivity of the Bragg gratings is reduced.

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