Since their initial demonstration, microstructured fibers have been utilized in a wide range of applications, owing to their customizable linear and nonlinear optical properties. One of the most remarkable achievements is the efficient generation of ultrabroad supercontinuum sources in solid-core fibers. Based on soliton dynamics, this broadening mechanism is inherently noisy, and current research is focused on generating quiet spectra for various applications. In contrast, hollow-core fibers, which can be filled with various fluids while maintaining their guidance properties, present unique opportunities. In quantum optics, they are the only method to circumvent the detrimental effects of Raman scattering by using monatomic gases to generate photon pairs. Conversely, by filling the fibre with Raman-active gases, we will demonstrate how to efficiently exploit stimulated Raman scattering to manipulate entangled photon pairs.