Optimization of Uniform Fiber Bragg Grating Reflection Spectra for Maximum Reflectivity and Narrow Bandwidth (original) (raw)

This paper investigates the optimization of uniform fiber Bragg grating (FBG) to achieve maximum reflectivity and narrow bandwidth by analyzing key parameters such as grating length and refractive index modulation. The coupling mode theory is employed to analyze the spectral characteristics of FBG, with findings illustrating that while the refractive index profile shape does not affect spectral behavior, increased grating length and refractive index modulation contribute positively to reflectivity, ultimately reaching saturation at specific values. The study offers insights into the design of FBG for improved performance in optical applications.