Method and apparatus for using multicarrier interferometry to enhance optical fiber communications

A method of receiving a multicarrier signal being configured to map each of a plurality of data symbols to a pulse in a pulse sequence characterized by a superposition of carrier signals, the method including:

• providing for adjusting the multicarrier signal to compensate for multipath,
• providing for combining the multicarrier signal to produce at least one time-domain signal characterized by the plurality of data symbols modulated on a pulse sequence, and
• providing for processing the at least one time-domain signal to detect at least one of the plurality of data symbols.

A multi phase-space detector capable of detecting a plurality of information signals modulated on a plurality of signal phase-spaces that map each of the plurality of information signals to a pulse in a pulse sequence characterized by a superposition of carrier signals, the detector including:

• a coupler coupled to a communication channel, the coupler capable of coupling a plurality of transmitted signals out of the channel to produce coupled signals,
• a frequency sampler capable of separating the coupled signals into a plurality of frequency components, and
• a combining circuit capable of combining the plurality of frequency components to generate at least one pulse sequence modulated with the plurality of information signals.