Method And System For Waveguide Delay Based Equalization With Summing At Single-Ended To Differential Converters In Optical Communication
First Claim
1. A method for communication, the method comprising:
- in an optoelectronic receiver comprising a directional coupler, first and second photodetectors, first and second transimpedance amplifiers (TIAs), and a gain stage;
receiving an input optical signal;
splitting the input optical signal into first and second optical signals using the directional coupler;
generating a first electrical current from the first optical signal using a first photodetector;
generating a first voltage from the first electrical current using the first TIA;
communicating the first voltage to a first input of the gain stage;
generating a second electrical current from the second optical signal using the second photodetector;
generating a second voltage from the first electrical signal using the second TIA;
communicating the second voltage to a second input of the gain stage; and
generating a differential output voltage from the first and second voltages using the gain stage.
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Accused Products
Abstract
Methods and systems for waveguide delay based equalization summing at single-ended to differential converters in optical communication are disclosed and may include: in an optoelectronic receiver including a directional coupler, photodetectors, transimpedance amplifiers (TIAs), and a gain stage, receiving an input optical signal; splitting the input optical signal into first and second optical signals using the directional coupler; generating a first current from the first optical signal using a first photodetector; generating a first voltage from the first current using a first TIA; communicating the first voltage to a first input of the gain stage; generating a second current from the second optical signal using a second photodetector; generating a second voltage from the first signal using a second TIA; communicating the second voltage to a second input of the gain stage; and generating a differential output voltage from the first and second voltages using the gain stage.
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Citations
20 Claims
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1. A method for communication, the method comprising:
in an optoelectronic receiver comprising a directional coupler, first and second photodetectors, first and second transimpedance amplifiers (TIAs), and a gain stage; receiving an input optical signal; splitting the input optical signal into first and second optical signals using the directional coupler; generating a first electrical current from the first optical signal using a first photodetector; generating a first voltage from the first electrical current using the first TIA; communicating the first voltage to a first input of the gain stage; generating a second electrical current from the second optical signal using the second photodetector; generating a second voltage from the first electrical signal using the second TIA; communicating the second voltage to a second input of the gain stage; and generating a differential output voltage from the first and second voltages using the gain stage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for communication, the system comprising:
an optoelectronic receiver comprising a directional coupler, first and second photodetectors, first and second transimpedance amplifiers (TIAs), and a gain stage, the optoelectronic receiver being operable to; receive an input optical signal; split the input optical signal into first and second optical signals using the directional coupler; generate a first electrical current from the first optical signal using a first photodetector; generate a first voltage from the first electrical current using the first TIA; communicate the first voltage to a first input of the gain stage; generate a second electrical current from the second optical signal using the second photodetector; generate a second voltage from the first electrical signal using the second TIA; communicate the second voltage to a second input of the gain stage; and generate a differential output voltage from the first and second voltages using the gain stage. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for communication, the system comprising:
an optoelectronic receiver comprising a directional coupler, first and second photodetectors, first and second transimpedance amplifiers (TIAs), and a gain stage, the optoelectronic receiver being operable to; receive an input optical signal; split the input optical signal into first and second optical signals using the directional coupler; delay the first optical signal; generate a first electrical current from the delayed first optical signal using a first photodetector; generate a first voltage from the first electrical current using the first TIA; communicate the first voltage to a first input of the gain stage; generate a second electrical current from the second optical signal using the second photodetector; generate a second voltage from the first electrical signal using the second TIA; communicate the second voltage to a second input of the gain stage; and generate a differential output voltage from the first and second voltages using the gain stage.
Specification