| 摘要 |
An optical apparatus for transfer of full-duplex data signals over an optical waveguide comprises electro-optic transducers, coupled to the optical waveguide at opposite ends thereof. The electro-optic transducers are responsive, in a first mode, to drive signal pulses to produce transmit optical signal pulses for transmission along the optical waveguide and responsive, in a second mode, to receive optical signal pulses detected by the electro-optic transducer means to produce detected signal pulses. Drivers, coupled to the electro-optic transducers, generate pairs of the drive signal pulses in response to each transmit bit of the data signals. Receivers, also coupled to the electro-optic transducers, generate receive bits of the data signals in response to at least one of each pair of the detected signal pulses. A switch switches the electro-optic transducer means between the first mode and the second mode, couples the driver to the electro-optic transducer means in the first mode, and couples the electro-optic transducer means to the receiver in the second mode. The time delay between each pair of the transmit optical signal pulses differs from the time delay between each pair of the receive optical signal pulses, and the duty cycle of the pulses is limited so that at any point along the optical waveguide there is no interference between at least one transmit optical signal pulse and one receive optical signal pulse of each pair.
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