Smart optical transceiver having integrated optical dying gasp function
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United States of America Patent
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Jan 26, 2016
Grant Date -
Aug 26, 2010
app pub date -
Feb 22, 2009
filing date -
Feb 22, 2009
priority date (Note) -
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Abstract
An optical transceiver includes an electric terminal that can receive power from a host equipment and provide a power supply voltage to the optical transceiver, and a power failure monitor circuit that can detect an imminent loss of the power supply voltage. The power failure monitor circuit can produce a dying-gasp control signal when such imminent loss of power supply voltage is detected or when a disabling control signal is received from the host equipment. A driver can receive the dying-gasp control signal. An optical transmitter is powered by the power supply voltage and can emit a first optical signal under the control of the driver. The driver can modulate an envelope of the first optical signal in response to the dying-gasp control signal to produce a modulated envelope comprising a first dying gasp signal.
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