We developed a highly efficient, broad-band optoelectronic stimulus pr
obe head employing a 1.55-mu m waveguide p-i-n photodiode (WGPD). The
novel multimode waveguide structure of the WGPD and optical lens-based
rigid coupling assembly yielded a very high responsivity of 0.75 A/W.
The OE probe has an effective 3-dB bandwidth of 50 GHz which is curre
ntly limited by the frequency dispersion of the CPW used in the probe,
2-mW, 64-Gb/s RZ optical pulse patterns were successfully able to be
converted to 200 mVpp electrical pulses.