Slice level control
AssigneeBookham Technology PLC
InventorsJianguo Yao, Qi Pan, Joseph Barnard
Life of this patent
Estimating the term…
Abstract
A method of processing an optical signal, including: generating one or more electrical signals indicative of said optical signal; applying said one or more electrical signals to one or more input pins of a chip configured to generate an output indicative of a comparison of the level of said one or more electrical signals with a reference level, the chip including circuitry configurable via two control pins to function as a DC offset cancellation loop; and applying across said two control pins a potential difference dependent on a characteristic of said optical signal so as to control said reference level in dependence on said characteristic of said optical signal.
Claims6
A method of processing an optical signal, including:
- generating one or more electrical signals indicative of said optical signal;
- applying said one or more electrical signals to one or more input pins of a chip configured to generate an output indicative of a comparison of the level of said one or more electrical signals with a reference level, the chip including circuitry configurable via two control pins to function as a DC offset cancellation loop;
- and
- applying across said two control pins a potential difference dependent on a characteristic of said optical signal so as to control said reference level in dependence on said characteristic of said optical signal.
A system for processing an optical signal, including:
- an optical detector unit configured to generate one or more electrical signals indicative of said optical signal;
- a chip arranged to receive said one or more electrical signals at one or more input pins thereof and configured to generate an output indicative of a comparison of the level of said one or more electrical signals with a reference level, the chip including circuitry configurable via two control pins to function as a DC offset cancellation loop;
- and
- a control unit configured to apply across said two control pins a potential difference dependent on a characteristic of said optical signal so as to control said reference level in dependence on said characteristic of said optical signal.
A control unit for controlling the processing of an optical signal, wherein the control unit is configured to control in dependence on a characteristic of said optical signal the magnitude of a potential difference applied across two control pins of a chip for receiving at one or more input pins thereof one or more electrical signals indicative of said optical signal and generating an output indicative of a comparison of the level of said one or more electrical signals with a reference level, the chip including circuitry configurable via said two control pins to function as a DC offset cancellation loop.
A method of processing an optical signal, including:
- generating one or more electrical signals indicative of said optical signal;
- applying said one or more electrical signals to one or more input pins of a chip configured to generate an output indicative of a comparison of the level of said one or more electrical signals with a reference level, the chip including circuitry configurable via two control pins to function as a DC offset cancellation loop;
- and
- actively varying the potential difference across said two control pins in order to control said reference level.
Dependencies are inferred from the claim text.