Optical Module Compensation Data for Modulator Nonlinearity
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Solution Overview
Problem
Optical networks in data centers face high bit error rates due to factors like optical attenuation, dispersion, and nonlinearity, necessitating improved optical communication technologies to enhance bandwidth, latency, power consumption, and reliability.
Innovation Solution
A communication apparatus that includes a storage unit for nonlinear compensation information, allowing flexible selection of optical modules with modulators, performs compensation based on modulator-specific information to reduce nonlinear distortion and bit error rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If nonlinear compensation is performed using pre-stored information in the communication apparatus, then the system structure is simple, but the compensation accuracy is insufficient due to variations in modulator characteristics
Solution Approach 1:
Instead of storing nonlinear compensation information in the communication apparatus (traditional approach), this patent inverts the storage location to the optical module containing the modulator. The optical module reads its own nonlinear compensation information from storage units and provides it to the communication apparatus, enabling accurate compensation while keeping the communication apparatus structure simple.
Solution Approach 2:
The optical module performs self-service by storing its own nonlinear compensation information internally and autonomously providing this information to the communication apparatus. This eliminates the need for complex pre-characterization and storage of modulator-specific information in the communication apparatus, while still achieving accurate compensation.
2Adaptability or versatility
If the communication apparatus is fixed with specific nonlinear compensation information, then the device complexity is reduced, but the adaptability to different optical modules is poor
Solution Approach 1:
The optical module is designed with universal functionality to work with different communication apparatuses. By equipping each optical module with its own storage unit containing modulator-specific nonlinear compensation information, the system achieves universal compatibility without requiring the communication apparatus to be pre-configured with information about specific optical modules.
Solution Approach 2:
The patent inverts the traditional information management approach by moving the nonlinear compensation information from the communication apparatus to the optical module. This allows each optical module to carry its own identification and compensation characteristics, enabling plug-and-play compatibility across different vendors and models.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Accurate nonlinear compensation reduces bit error rates and optimizes optical communication performance by adapting to the unique characteristics of different modulators, enhancing signal quality and reducing power consumption.
Implementation Method 1
The modulator is configured to modulate the electrical signal input to the optical transmitter unit into an optical signal
Data Source
Figure 1-1~1-2
Figure 2
Figure 3-1
AI summary
This application discloses a system, a communication apparatus, an optical module, a method, and an optical network. The system may include a communication apparatus and an optical module. The communication apparatus includes a control module and a service module. The optical module includes a storage unit and an optical transmitter unit. The storage unit may store nonlinear compensation information of a modulator in the optical transmitter unit. After the optical transmitter unit is directly connected to the service module, the control module may read the nonlinear compensation information from the storage unit, and configure a nonlinear compensation coefficient of the service module based on the nonlinear compensation information. The service module sends an electrical signal to the optical transmitter unit based on the configured nonlinear compensation coefficient. The modulator modulates an electrical signal obtained through nonlinear compensation into an optical signal. This helps compensate for nonlinear distortion introduced by the modulator to the signal.