INTEGRATED OPTICAL POLARISING DEVICE AND PROCESS FOR ITS MANUFACTURE

摘要

An integrated optics polarizing device having a flat substrate made for example from lithium niobate, in which an integrated wave guide has been created by doping with titanium ions and one or more so called interaction regions interacting on the wave, formed within the material of the substrate, and having refraction indices such that a wave with a first polarization direction propagates in a guided mode in said wave guide and a wave with an orthogonal polarization is extinguished. Said interaction regions are obtained by modifying the material of said substrate in a controlled way by doping or ion substitution.