| 摘要 |
A method of communicating digital information over a dispersive optical channel is provided. The method includes the steps of: processing input digital information bits to generate a corresponding electrical orthogonal frequency division multiplexed (OFDM) signal comprising in-phase and quadrature signal components, wherein the information bits are encoded in data symbols corresponding with frequency components of the OFDM signal; modulating an optical source with the in-phase and quadrature signal components to produce a corresponding optical OFDM signal; transmitting the optical OFDM signal over the dispersive optical channel; detecting the optical OFDM signal to produce corresponding received in-phase and quadrature signal components; processing the received in-phase and quadrature signal components to recover the frequency components of the electrical OFDM signal; and equalising each frequency component by applying a phase adjustment corresponding with dispersion experienced thereby, in order to recover the transmitted data symbols and encoded information bits.
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