SINGLE FIBER TRANSCEIVER with FAULT LOCALIZATION
First Claim
1. An optical transceiver, comprising:
- a transmitter comprising a laser diode and a laser driver providing a drive signal to the laser diode;
a receiver comprising a photodiode and signal recovery circuitry; and
a microcontroller coupled to the transmitter and receiver and providing a modulated power control current to the laser during an impulse test mode to transmit high optical power signal and monitoring received signals to detect reflections.
1 Assignment
0 Petitions
Accused Products
Abstract
A fiber optic transceiver adapted for use in an optical fiber data transmission system is capable of detecting reflection problems in fiber optic links and providing information related to the distance to the point of reflection. The fiber optic transceiver contains a fiber interface, a receiver, a transmitter, and a microcontroller. The microcontroller controls the transmitter to modulate the laser power to transmit impulse test data and the transceiver includes circuitry and microcode to detect reflection due to fiber connection problems. This enables trouble shooting during installation and/or reconfiguring the connection automatically, in response to a connection problem, and provides a physical layer link.
145 Citations
15 Claims
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1. An optical transceiver, comprising:
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a transmitter comprising a laser diode and a laser driver providing a drive signal to the laser diode;
a receiver comprising a photodiode and signal recovery circuitry; and
a microcontroller coupled to the transmitter and receiver and providing a modulated power control current to the laser during an impulse test mode to transmit high optical power signal and monitoring received signals to detect reflections. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for detection of high optical reflection in a fiber optic network, comprising:
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transmitting an impulse test signal by modulating a laser transmitter using an impulse test transmission mode which is different than a data transmission mode used during normal operating conditions; and
detecting any received signals modulated using said test transmission mode within a predetermined time period after said transmitting. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification