Research has been conducted on various equations related to optical solitons, including the space-time fractional Fokas-Lenells equation, with a focus on bifurcation analysis and soliton solutions. The studies appear to involve different equations, including the Wazwaz-Kaur Boussinesq equation, the Zoomeron equation, and the degenerated Biswas-Milovic equation, among others. These analyses aim to characterize and understand the behavior of optical solitons in different contexts, including dynamical and sensitivity analysis.