In ultrashort optical pulse modulating equipment optical pulses emitted from a laser in synchronism with input electrical signals are modulated by the electrical signals, the modulated optical pulses are applied to a first-stage pulse interval compressor, in which they are alternately distributed, one...http://www.google.se/patents/US5099471?utm_source=gb-gplus-sharePatent US5099471 - Ultrashort optical pulse modulating equipment
