Femtosecond microfabrication technology is used in micro-optics applications, including multi-photon polymerization (MPP) and 3D laser lithography. MPP enables the production of polymeric structures with high resolution, such as Fresnel lenses and photonic crystals. These structures can be used in optics and photonics applications for miniaturization. 3D laser lithography is used to fabricate micro-optical components, such as micro prisms, which can be printed on functional devices for filtering and detecting light signals. Multiphoton polymerization provides flexibility in maintaining different quality and functionality surfaces for various applications.