The Space optical communications tag focuses on optical hardware used to transmit data via laser links between satellites and ground stations or between satellites themselves. Articles here may describe telescopes, beam expanders, pointing and tracking optics, and fine steering mechanisms designed to maintain alignment over long distances and through dynamic conditions. Topics include aperture sizing, wavelength choices, divergence and beam quality control, and mitigation of atmospheric effects for ground links. The tag highlights how optical system design influences link budget, data rate, and reliability in space environments. For teams working on next-generation communication infrastructure, these resources show how precision optics and robust optomechanics underpin high-bandwidth, secure space optical communication systems. They also reflect Avantier’s ability to supply custom optics tailored to the constraints of space platforms.