  We demonstrated sub-wavelength (~111 nm diameter) single nanowire (NW)
continuous wave (CW) lasers on silicon photonic crystal in the telecom-band
with direct modulation at 10 Gb/s by optical pumping at cryogenic temperatures.
To estimate the small signal response and pseudo-random bit sequence (PRBS)
modulation of our CW lasers, we employed a new signal detection technique that
employs a superconducting single photon detector and a time-correlated single
photon counting module. The results showed that our NW laser was unambiguously
modulated at above 10 Gb/s and an open eye pattern was obtained. This is the
first demonstration of a telecom-band CW NW laser with high-speed PRBS
modulation.
