Right-angle-bent CPW for the application of the driver-amplifier-integrated 40 Gbps TW-EML module

Abstract

In this letter we present a right-angle-bent cqplanar waveguide (CPW) which we developed for the application of the driver amplifier-integrated (DAI) 40 Gbps traveling wave electroabsorption modulated laser module. The developed CPW realized parallel progression of the radio frequency (RF) and light using a dielectric overlay structure and wedge bonding on the bending section. The measured S11 and S21 of the developed CPW were kept below -10 dB up to 35 GHz and-3 dB up to 43 GHz, respectively. These measured results of the CPW were in good agreement with the simulation results and demonstrated the applicability of the CPW to the 40 Gbps communication module.