Optical filter using electro-optic material

摘要

An optical filter fabricated in an electro-optic material substrate (2) comprises a plurality of waveguide stages (3) coupled to each other by optical coupling regions (5). A plurality of electrodes (31,51) overlying the waveguide stages (3) and the coupling regions (5) are used to time the filter by varying the optical path length difference between waveguides and the optical cross coupling in the coupling regions (5). <IMAGE>