Fiber Bragg Gratings in Small-Core Ge-Doped Photonic Crystal Fibers

摘要

This paper reports fiber Bragg gratings (FBGs) inscribed in a small-core Ge-doped photonic crystal fibers with a UV laser and a Talbot inter- ferometer. The responses of such FBGs to temper- ature, strain, bending, and transverse-loading were systematically investigated. The Bragg wavelength of the FBGs shifts toward longer wavelengths with increasing temperature, tensile strain, and trans- verse-loading. The bending and transverse- loading properties of the FBGs are sensitive to the fiber orientations.