Modified Sagnac optical fiber interferometer simulation study for chaotic perturbations

In this simulation study, the chaotic circulating signal in a Sagnac fiber interferometer (SFI) is filtered using a uniform fiber Bragg grating (UFBG). An investigation is conducted into determining the available perturbations for the original supplied signal. Within a single-mode optical fiber loop mirror system, a continuous wave-type signal is delivered by a vertical-cavity surface-emitting laser (VCSEL). To attain unidirectional interference interaction between the two generated signals. The unidirectional signal circulation is considered by subjecting it virtually to only one direction of flow. The significance of the filtering role in this interaction is investigated in addition to the phase shift. Chaotic signals are created at different Fill Width at Half Maximum (FWHM) and bandwidth in their amplitudes, depending on modifications in the selected initial conditions. The results point to the possibility of producing more powerful interruptions in this interferometer. The properties of different materials that affect their refractive index and fiber length lead to cross-sensitivity. While the resulting chaotic ratio can be used to encode low-frequency signals, it also poses a risk to the accuracy of cross-sensing. In order to construct the chaotic transmission unit for safe optical communication systems, the laser source must first receive the data.