Coherent optical telecommunication network wherein each send/rec

Optical: systems and elements – Deflection using a moving element – Using a periodically moving element

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359113, 359114, H04B 1006

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053716221

ABSTRACT:
In an optical telecommunication system having a direct-access optical transmission medium, a plurality of send/receive terminals may communicate with each other on different optical carriers. In order to make it possible for a terminal which is already in communication with a second terminal to also transmit to or receive a message from a third terminal, each terminal includes modulation and demodulation circuits for modulating/demodulating particular message signals on particular subcarriers. Signals received from different terminals can thereby be distinguished from each other on the basis of their respective subcarriers.

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