Lightsabers are easily the most recognizable element of the Star Wars franchise. Ever since Obi-Wan pulled out Anakin's saber and gave it to Luke in A New Hope, the weapon has been indicative of a Jedi or Sith. During Star Wars' first two films, the Skywalker lightsaber became a popular item, but it didn't stop there. In Return of the Jedi, Luke had a new green lightsaber that symbolized his growth as a Jedi. After that, nearly every new film introduced some kind of lightsaber variant.
Source：https://www.cbr.com/jedi-no-double-bladed-lightsabers-explained-star-wars/
