Integrated SerDes Amplifier Output for Low-Power Optical Modulator Drive
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Solution Overview
Problem
The high power consumption of optical modules in data centers, particularly due to the amplification process in serializer/deserializer (SerDes) systems, which requires a separate driver chip to amplify signals for optical modulators, leading to increased energy usage and costs.
Innovation Solution
A signal generation apparatus comprising an encoder, serializer, equalizer, and multiple amplifiers that directly generate differential signals to drive optical modulators, eliminating the need for a separate driver chip by amplifying signals within the apparatus, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a separate driver chip is used to amplify signals for optical modulators, then signal amplification capability is improved, but power consumption increases
Solution Approach 1:
The patent merges the driver chip functionality into the SerDes device by integrating multiple amplifiers directly into the SerDes circuit. The SerDes device now includes an encoder, serializer, equalizer, and multiple amplifiers that work together to generate and amplify differential signals, eliminating the need for a separate driver chip and reducing overall power consumption.
Solution Approach 2:
The SerDes device is designed to perform multiple functions: encoding data, serializing parallel signals, equalizing signal levels, and amplifying differential signals. This multi-functional integration allows the SerDes to replace the traditional separate driver chip, achieving both signal amplification and power reduction through a single unified device.
2Use of energy by moving object
If multiple amplifiers are integrated into the SerDes device, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The patent combines multiple functional blocks (encoder, serializer, equalizer, and multiple amplifiers) into a single integrated SerDes device. This merging approach consolidates what would traditionally be separate components, reducing the need for external driver chips and interconnections, thereby managing complexity through integration rather than proliferation of separate devices.
Solution Approach 2:
The signal processing function is divided into distinct segments: encoding, serialization, equalization, and amplification. Each segment is handled by a dedicated functional block within the SerDes, allowing for modular design and implementation. This segmentation enables complex functionality to be achieved through organized, manageable sub-functions rather than a monolithic design.
3Device complexity
If signal amplification is performed within the SerDes device, then the need for discrete driver chip is eliminated, but manufacturing complexity increases
Solution Approach 1:
The patent integrates the amplification function directly into the SerDes device, combining what were previously separate components (SerDes and driver chip) into a single integrated unit. This reduces the total number of discrete components and interconnections, simplifying the overall system architecture and potentially easing manufacturing through reduced assembly steps.
Solution Approach 2:
The SerDes device is designed as a universal platform that can perform encoding, serialization, equalization, and amplification functions. This multi-functional design allows a single device to replace multiple specialized components, potentially simplifying the supply chain and manufacturing process by reducing the variety of different components that need to be sourced and assembled.
Data Source
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AI summary
This application provides a signal generation apparatus and method, and a system. The signal generation apparatus includes an encoder, a serializer, an equalizer, and N amplifiers. The encoder is configured to encode to-be-sent data, to obtain a first electrical signal. The serializer is configured to perform parallel-to-serial processing on the first electrical signal, to obtain a second electrical signal. The equalizer is configured to process the second electrical signal, to obtain a third electrical signal. The third electrical signal is amplified by the N amplifiers, to obtain N pairs of differential signals, where N is an integer greater than 2. In embodiments of this application, the N amplifiers amplify differential signals to obtain N pairs of differential signals, and the N pairs of differential signals are directly used as drive signals, so that power consumption for generating a drive signal can be reduced.