An optical fiber emulator. The emulator receives a digitally-encoded optical signal; demodulates the optical signal to produce serial electrical pulses representative of the digital signal; converts the serial pulses to parallel pulses; propagates the parallel pulses through a shift register whose propagation...http://www.google.es/patents/US6721086?utm_source=gb-gplus-sharePatente US6721086 - Optical fiber emulator
