We study the measurand-induced spectral shift of the photonic bandgap edge of a hollow-core photonic crystal fiber. The physical measurands considered are strain, temperature, curvature, and twist. A noticeable sensitivity to strain, temperature, and twist is observed, with a blueshift to increase strain and twist. An increase in temperature induces a redshift. On the other hand, curvature has no observable effect on the spectral position of the photonic bandgap edge.
- Crystal fibers
Aref, S. H., Amezcua Correa, R., Carvalho, J. P., Frazao, O., Santos, J. L., Araujo, F. M., ... Knight, J. C. (2010). Spectral characterization of a photonic bandgap fiber for sensing applications. Applied Optics, 49(10), 1870-1875. https://doi.org/10.1364/AO.49.001870