microstructured optical fiber bragg gratings and their applications
Bragg gratings are inscribed in a highly Ge-doped index-guiding microstructured optical fiber, a grapefruit microstructure fiber, and an all-solid bandgap fiber, by conventional phase mask method. Their spectral characteristics and couplings are explained based on coupled mode theory and the analysis of their modal properties. They present some unique spectral features that could not be observed in conventional step-index fibers. These gratings would find their specific application in optical communication and fiber sensing.
fiber bragg gratings microstructure fiber photonic crystal fiber