INGAALAS/INALAS MULTIQUANTUM WELL ELECTROABSORPTION PHASE MODULATOR MODULE

A newly fabricated InGaAlAs/InAlAs multiquantum well (MQW) waveguide phase modulator module is reported. A low connector-connector insertion loss of 7.98 dB is obtained together with a wide modulation bandwidth of over 18 GHz by employing an aspherical lens and tapered microstripline. The pi -driving voltage at 1.55 mu m is 2.8 V for TE polarised light and the accompanying residual intensity modulation is 3.6 dB. >