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 si
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.
대표청구항▼
An optical apparatus for transfer of full-duplex data signals over an optical waveguide, the apparatus comprising: an electro-optic transducer means, coupled to the optical waveguide, responsive, in a first mode, to drive signal pulses to produce corresponding transmit optical signal pulses for tran
An optical apparatus for transfer of full-duplex data signals over an optical waveguide, the apparatus comprising: an electro-optic transducer means, coupled to the optical waveguide, responsive, in a first mode, to drive signal pulses to produce corresponding transmit optical signal pulses for transmission along the optical waveguide and responsive, in a second mode, to received optical signal pulses to produce detected signal pulses; reception means including decoding means, for generating a receive bit of the data signals in response to the detected signal pulses; driving means including encoding means responsive to each transmit bit of the data signals, for generating a pair of the drive signal pulses, each pair of drive signal pulses being within one bit period of the respective transmit bit of the data signals, the pulses of each pair of drive signal pulses being spaced apart by a predetermined time period equal to the period of at least one pulse of the pair of pulses and both pulses of each pair of drive signal pulses having the same logic level; wherein the time delay between each pulse of the corresponding pair of transmit optical signal pulses differs from that of the pair of receive optical signal pulses, and wherein the duty cycle of the transmit optical signal pulses is such that for any phase relationship between transmission of the pairs of transmit signal optical pulses and reception of the pairs of receive optical signal pulses there is no interference between at least one transmit optical signal pulse and one receive optical signal pulse of each pair; and switch means for switching the electro-optic transducer means between the first mode and the second mode, for coupling the driving means to the electro-optic transducer means in the first mode, and for coupling the electro-optic transducer means to the reception means in the second mode.
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