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US 12,009,857 B2Granted
Closed loop module control for communication based on signal quality
AssigneeMarvell Asia Pte Ltd
InventorsTodd Rope, Radhakrishnan L. Nagarajan
Life of this patent
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Abstract
The present invention is directed to communication systems and methods. According to an embodiment, a receiving optical transceiver determines signal quality for signals received from a transmitting optical transceiver. Information related to the signal quality is embedded into back-channel data and sent to the transmitting optical transceiver. The transmitting optical transceiver detects the presence of the back-channel data and adjusts one or more of its operating parameters based on the back-channel data. There are other embodiments as well.
Claims12
An optical transceiver comprising:
- an optical receiver configured to:
- receive a first optical signal transmitted from a remote optical transceiver via an optical communication channel, the received first optical signal including data indicative of a signal quality of a second optical signal transmitted by the optical transceiver to the remote optical transceiver via the optical communication channel;
- and
- extract the data indicative of the signal quality of the second optical signal from the received first optical signal;
- an optical transmitter configured to:
- adjust, based on the data extracted from the received first optical signal, a parameter for transmitting the second optical signal to the remote optical transceiver via the optical communication channel;
- and
- a control module configured to adjust one or more parameters of the optical receiver including gain of a photodiode;
- center frequency of a delay line interferometer;
- and amplitude, gain, and/or bandwidth of a transimpedance amplifier based on the data extracted from the received first optical signal.
7 more elements
An optical communications system comprising:
- a first optical transceiver;
- and
- a second optical transceiver configured to communicate with the first optical transceiver via an optical communication channel;
- wherein the first optical transceiver is configured to:
- receive a first optical signal transmitted from the second optical transceiver via the optical communication channel;
- measure a signal quality of the received first optical signal based on an electrical signal corresponding to the first optical signal;
- insert into a second optical signal data indicative of the measured signal quality of the received first optical signal;
- and
- transmit the second optical signal, including the data indicative of the measured signal quality of the received first optical signal, to the second optical transceiver via the optical communication channel;
- wherein the second optical transceiver is configured to:
- receive the second optical signal transmitted from the first optical transceiver via the optical communication channel, the received second optical signal including the data indicative of the signal quality of the first optical signal that had been transmitted by the second optical transceiver to the first optical transceiver via the optical communication channel;
- extract the data indicative of the measured signal quality of the first optical signal from the received second optical signal;
- adjust, based on the data extracted from the received second optical signal, a parameter for transmitting the first optical signal to the first optical transceiver via the optical communication channel;
- transmit the first optical signal to the first optical transceiver via the optical communication channel according to the parameter adjusted based on the data extracted from the second optical signal;
- and
- adjust one or more parameters of an optical receiver of the second optical transceiver, the one or more parameters including gain of a photodiode;
- center frequency of a delay line interferometer;
- and amplitude, gain, and/or bandwidth of a transimpedance amplifier based on the data extracted from the received second optical signal.
15 more elements
Dependencies are inferred from the claim text.