Abstract

A measurements-based model of Mach-Zehnder electrooptic modulator and of its electrical driverare proposed.These models are essential for concurrent design of the two devices,and allow careful optimisation ofthe overall performance of the 40 Gb/s transmitter.The design of a travelling wave driver amplifier for a given fabricated modulator has been performed by using the proposed models.An improvement of about 6 dB has beenobtained for the extinction ratio with respect to a previously designed 7 Vpp driver.