Analytical and comparative study of LPGs manufactured using electric-arc and UV micromachining methods

摘要

An analytical model for long-period grating manufactured using an electric-arc micromachining method is developed. This model takes into account the resulting modulation of the refractive index and the diameter in both the core and the cladding of the fiber structure. Based on the local-mode theory, the model introduces coupling coefficients and detuning parameters that vary longitudinally. Comparisons are made with the standard model for long-period grating manufactured using the UV micromachining method.