LiNbO3 crystal fiber processing for guided optics

Lithium niobate (LN) crystal fibers represent promising new substrates for optical applications. Indeed, additionally to the numerous properties of LN, the high length-to-width ratio of LN crystal fibers can be very useful for numerous optical applications. Furthermore, the growing methods used to produce these fibers allow to control their composition and to change the nature and concentration of dopants during the growth, easier than in the usual Kyropoulos or Czochralski techniques. This allows the possible creation of multifunction built-in devices within the same substrate, free of signal losses related to the assembly of various devices and multiple interfaces between different functional parts.