Article ID Journal Published Year Pages File Type
1430780 Materials Science and Engineering: C 2006 5 Pages PDF
Abstract

Sensing experiments with a long-period grating (LPG) inscribed by a CO2 laser in a single-mode fiber with an inverted-parabolic index profile in the fiber cladding were done. A single LPG with a period of 500 μm was used in experiments and spectral changes of the attenuation band centered at ≈1520 nm were measured. Responses of the LPG to temperature changes and temperature-induced refractive-index changes were investigated. An average shift of 0.56 nm/°C was obtained for the bare LPG and of 0.86 nm/°C for the LPG recoated with a polymeric layer. An overall shift of the central wavelengths was observed in experiments repeated after two weeks that can be attributed to post-curing processes in the polymeric layer.

Related Topics
Physical Sciences and Engineering Materials Science Biomaterials
Authors
, , , , , , , ,