Novel method for ultrahigh-frequency electro-optic time-domain reflectometry

We propose a new approach to time-domain reflectometry utilising picosecond electro-optic sampling and counter-propagating electrical pulses on a coplanar transmission line. This method enables direct acquisition of the incident and reflected waveforms at the interface between a device and transmission line without requiring temporal separation between the waveforms or deconvolution of the effect of the transmission line on the waveforms.