Remote Slicing Level Control for Smart Transceiver BER Optimization
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Solution Overview
Problem
In optical fiber communication systems, especially in optically amplified and single-wavelength-bidirectional transceiver systems, the receiver's slicing level often deviates from the optimum, leading to degraded bit error rate (BER) performance, requiring costly adjustments and additional link budget margins, and lacks remote controllability, especially when transceivers are physically separated.
Innovation Solution
A remote control scheme for the slicing level of a smart transceiver, utilizing a proprietary protocol and Bit Error Rate Test (BERT) equipment, allows for adjusting the slicing level of a receiver in a smart transceiver at one end of an optical link from a central location, using an operating system with OAM and PP functions, enabling remote operation and optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a preset slicing level is used in the transceiver IC design, then the device complexity is reduced and manufacturing cost is lowered, but the BER performance deteriorates due to offset from the optimum level
Solution Approach 1:
The patent implements a dynamically adjustable slicing level by introducing a control register that can be remotely configured. The slicing level is no longer fixed in the IC design but can be adjusted after deployment to match actual system conditions, resolving the contradiction between ease of manufacture and BER performance.
Solution Approach 2:
The patent changes the slicing level parameter from a fixed preset value to a configurable parameter that can be remotely adjusted. This allows the system to optimize BER performance for different operating conditions while maintaining the simplicity of the original IC design.
2Reliability
If the slicing level is adjusted locally at the transceiver site, then the BER performance can be optimized, but the operational cost and time increase due to requiring technician presence at remote locations
Solution Approach 1:
The patent enables self-service by allowing the slicing level to be adjusted remotely without requiring physical access to the transceiver. The system can be reconfigured through electronic control signals, eliminating the need for technician travel and on-site adjustment time.
Solution Approach 2:
The patent introduces an intermediary control mechanism that allows remote adjustment of the slicing level. A control register acts as the intermediary between the remote control signal and the actual slicing level adjustment, enabling optimization without physical presence at the transceiver location.
3Reliability
If extra link budget margins are allocated to compensate for non-optimum slicing level, then the BER performance is maintained, but the system cost increases
Solution Approach 1:
The patent changes the slicing level parameter to be optimizable, eliminating the need for excessive link budget margins. By adjusting the slicing level to match actual system conditions, the system can achieve target BER performance with minimal or no additional margin requirements.
4Device complexity
If the slicing level is fixed in the IC design, then the device complexity is reduced, but the adaptability to different system conditions deteriorates
Solution Approach 1:
The patent transforms the static slicing level into a dynamic, remotely configurable parameter. This adds minimal complexity through a control register while dramatically improving adaptability to different system conditions such as optical amplifier presence, bidirectional operation, and varying signal qualities.
Data Source
AI summary
A scheme is described of remote control of the slicing level of a receiver in a smart SFP (or SFP+, or XFP) duplex (or BiDi, or SWBiDi) transceiver in a communication system using an operating system with OAM and PP functions, an OAM, PP & Payload Processor, a transceiver, a BERT, and an optical link in the field.