Method and system for waveguide delay based equalization with optical splitting in optical communication

A system for communication, the system comprising:

• an optoelectronic circuit comprising an optical splitter, an optical delay, first and second photodetectors, an amplifier, and a summing element, the optoelectronic circuit being operable to:
• split an input optical signal into first and second output signals using the optical splitter;
• delay the first output signal using the optical delay;
• convert the delayed first output signal to a first electrical signal using the first photodetector;
• convert the second output signal to a second electrical signal using the second photodetector;
• amplify the second electrical signal using the amplifier;
• and
• sum the first and second electrical signals using the summing element.

A method comprising:

• splitting an input optical signal into first and second output signals;
• delaying the first output signal;
• converting the delayed first output signal to a first electrical current;
• converting the second output signal to a second electrical current;
• converting the first and second electrical currents to first and second voltages;
• and
• generating a differential output voltage based on the first and second voltages.

A system for communication, the system comprising:

• an optoelectronic circuit comprising an optical splitter, an optical delay, first and second photodetectors, current converters, and a gain stage, the optoelectronic circuit being operable to:
• split an input optical signal into first and second output signals using the optical splitter;
• delay the first output signal using the optical delay;
• convert the delayed first output signal to a first electrical current using the first photodetector;
• convert the second output signal to a second electrical current using the second photodetector;
• convert the first and second electrical currents to first and second voltages using current converters;
• and
• generate a differential output voltage based on the first and second voltages using the gain stage.