Transceiver module and integrated circuit with dual eye openers
First Claim
Patent Images
1. An optical transceiver module, comprising:
- a serial electrical interface with an electrical output port and an electrical input port;
a receive path comprising;
an optical input port for receiving a first optical signal from external to the transceiver module;
a receiver eye opener for retiming and reshaping a first serial electrical data stream based on the first optical signal; and
the electrical output port of the serial electrical interface for transmitting the retimed and reshaped first serial electrical data stream to external to the transceiver module; and
a transmit path comprising;
an electrical input port of the serial electrical interface for receiving;
a second serial electrical data stream from external to the transceiver module;
a transmitter eye opener for retiming and reshaping the second seria electrical data stream; and
an optical output port for transmitting a second optical signal to external to the transceiver module, the second optical signal based on the retimed and reshaped second serial electrical data stream.
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Abstract
A transceiver module having integrated eye diagram opening functionality for reducing jitter is described. The transceiver module may include a transmitter eye opener and a receiver eye opener integrated in a single circuit. The transceiver module may also include serial control and various other integrated components. Other functionalities that may be integrated on the transceiver module include loopback modes, bypass features, bit error rate testing, and power down modes.
127 Citations
20 Claims
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1. An optical transceiver module, comprising:
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a serial electrical interface with an electrical output port and an electrical input port;
a receive path comprising;
an optical input port for receiving a first optical signal from external to the transceiver module;
a receiver eye opener for retiming and reshaping a first serial electrical data stream based on the first optical signal; and
the electrical output port of the serial electrical interface for transmitting the retimed and reshaped first serial electrical data stream to external to the transceiver module; and
a transmit path comprising;
an electrical input port of the serial electrical interface for receiving;
a second serial electrical data stream from external to the transceiver module;
a transmitter eye opener for retiming and reshaping the second seria electrical data stream; and
an optical output port for transmitting a second optical signal to external to the transceiver module, the second optical signal based on the retimed and reshaped second serial electrical data stream. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13)
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6. An optical transceiver module, comprising:
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a serial electrical interface with an electrical output port and an electrical input port;
a receive path comprising;
an optical input port for receiving a first optical signal from external to the transceiver module;
a receiver eye opener for retiming and reshaping a first serial electrical data stream based on the first optical signal; and
the electrical output port of the serial electrical interface for transmitting the retimed and reshaped first serial electrical data stream to external to the transceiver module; and
a transmit path comprising;
an electrical input port of the serial electrical interface for receiving a second serial electrical data stream from external to the transceiver module;
a transmitter eye opener for retiming and reshaping the second serial electrical data stream; and
an optical output port for transmitting a second optical signal to external to the transceiver module, the second optical signal based on the retimed and reshaped second serial electrical data stream, wherein the electrical output port switchably outputs a signal selected from a group comprising the first serial electrical data stream without retiming and reshaping, the retimed and reshaped first serial electrical data stream, and a diagnostic data stream.
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14. In an optical transceiver module having a serial electrical interface with an electrical output port and an electrical input port, a method for receiving and transmitting signals, the method comprising the steps of:
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receiving a first optical signal from external to the transceiver module;
converting the first optical signal to a first serial electrical data stream;
retiming and reshaping the first serial electrical data stream;
transmitting the retimed and reshaped first serial electrical data stream to external to the transceiver module;
receiving a second serial electrical data stream from external to the transceiver module;
retiming and reshaping the second serial electrical data stream;
converting the retimed and reshaped second serial electrical data stream to a second optical signal; and
transmitting the second optical signal to external to the transceiver module. - View Dependent Claims (15, 16, 17, 19, 20)
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18. In an optical transceiving module having a serial electrical interface with an electrical output port and an electrical input port, a method for receiving and transmitting signals, the method comprising the steps of:
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receiving a first optical signal from external to the transceiver module;
converting the first optical signal to a first serial electrical data stream;
retiming and reshaping the first serial electrical data stream;
transmitting the retimed and reshaped first serial electrical data stream to external to the transceiver module;
receiving a second serial electrical data stream from external to the transceiver module;
retiming and reshaping the second serial electrical data stream;
converting the retimed and reshaped second serial electrical data stream to a second optical signal;
transmitting the second optical signal to external to the transceiver module;
wherein each step of retiming and reshaping a serial electrical data stream comprises;
recovering a clock and data from the serial electrical data stream; and
retiming the recovered data based on a clock signal; and
wherein the clock signal is switchably selectable between a received reference clock and the recovered clock.
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Specification