Traveling wave electrodes for 50 GHz operation of opto-electronic devices based on InP

Abstract

We report on the design, fabrication and performance electro-optic switches based on a Mach-Zehnder interferometer with traveling wave electrodes. Our work aimed at increasing the bandwidth of such devices by reducing the loss parameter a of the electrodes. We realized an electrode configuration using electro-plated metallization layers and achieved a bandwidth of 50 GHz (6.4 dB electrical corresponding to 3 dB optical) suitable for the operation of optoelectronic devices up to 100 Gb/s

Ultra-short silicon-organic hybrid (SOH) modulator for bidirectional polarization-independent operation

“…It has been demonstrated that the intrinsic polarization dependence of silicon photonic modulators can be overcome with bidirectional modulation schemes 3 . However, conventional travelling-wave modulators 4 are constructed for unidirectional operation with copropagating (co) electrical and optical waves. For bidirectional operation, when electrical and optical waves are also counter-propagating (ctr), the bandwidth is limited to a few GHz 3 .…”