CHIRP-IMPROVEMENT OF OPTICAL INTERSECTING-WAVE-GUIDE SWITCH MODULATORS BY ELECTRODE CURVATURE/

Introduction of slight exponential curvature into the electrode shape of optical intersecting-waveguide switch/modulators is proposed as the means of improving their frequency-chirping behavior, The improvement is achieved by adjusting the electrode curvature to make it to pose a constant angle of incidence to all plane-wave spatial components of t he guided mode, This results in reduction of the phase disturbances as sociated with the total reflection process and the frequency-chirping is, consequently, lowered.