Single fiber transceiver and network

A single fiber transceiver for use in a first node connected to a second node and a third node in a network communicating with serial data encoded in such a way as to have known pulse width relative to the bit period, the transceiver comprising:

• a single fiber first receiver for receiving serial data from the second node,
• receive data path logic, the first receiver further for passing received serial data to the receive data path logic, the receive data path logic for determining if the serial data received from the first receiver is valid,
• transmit data path logic, the receive data path logic for passing valid serial data to the transmit data path logic,
• a single fiber first transmitter for transmitting serial data, the transmit data path logic for passing the valid serial data to the first transmitter and enabling the first transmitter to transmit data to the third node, and
• a pulse width distortion compensation circuit for recognizing a leading edge of a received pulse of serial data, sampling the serial data at multiples of one-half of the bit period from recognition of the pulse until a new leading edge, and reconstructing the serial data according to the samples.

A single fiber transceiver for use in a first node connected to a second node and a third node in a network communicating with serial data encoded in such a way as to have known pulse width relative to the bit period, the transceiver comprising:

• a single fiber first receiver for receiving serial data from the second node,
• receive data path logic, the first receiver further for passing received serial data to the receive data path logic, the receive data path logic for determining if the serial data received from the first receiver is valid,
• transmit data path logic, the receive data path logic for passing valid serial data to the transmit data path logic,
• a single fiber first transmitter for transmitting serial data, the transmit data path logic for passing the valid serial data to the first transmitter and enabling the first transmitter to transmit data to the third node,
• a weak link detection circuit for determining the optical power at the receiver by converting the amplitude of the received serial data to a corresponding amount of pulse width distortion introduced into the received data and measuring the magnitude of the distortion.

A single fiber transceiver for use in a first node connected to a second node and a third node in a network communicating with serial data encoded in such a way as to have a known bit rate, the transceiver comprising:

• a single fiber first receiver for receiving serial data from the second node,
• receive data path logic, the first receiver further for passing received serial data to the receive data path logic, the receive data path logic for determining if the serial data received from the first receiver is valid,
• transmit data path logic, the receive data path logic for passing valid serial data to the transmit data path logic,
• a single fiber first transmitter for transmitting serial data, the transmit data path logic for passing the valid serial data to the first transmitter and enabling the first transmitter to transmit data to the third node, and
• a phase locked loop for removing jitter from the received serial data by using a local frequency generator to sample the received data and to regenerate the data based on the samples of the received data, the frequency generator providing feedback signals to phase detectors that compare the phase of the frequency generator to the phase of the received data and can accordingly force the frequency generator to adjust its phase to more closely match that of the received data.