Optical Transceiver Automatic Speed Switching via Clock Detection

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Solution Overview

Problem

Conventional optical transceivers require manual and active switching of signal transmission speed, which is inconvenient and prone to errors, and passive switching methods often misjudge signal speed due to equipment variations and continuous data rate measurement, increasing system workload.

Innovation Solution

An optical transceiver with a receiver optical subassembly, transmitter optical subassembly, amplifying module, and identifying module that periodically detects the presence of a clock and data recovery signal to automatically switch between high-speed and low-speed modes, eliminating the need for manual settings and reducing errors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual switching operation is used to preset signal processing method according to signal speed, then the operator can configure the system, but the operation is inconvenient and errors are inevitable

Engineering Contradiction:

Improvesignal speed switching operationVSAvoidconfiguration accuracy

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The optical transceiver automatically detects the signal transmission speed and selects the appropriate signal processing method without operator intervention. The system self-configures by detecting whether a clock and data recovery signal is present, eliminating manual switching operations and preventing configuration errors.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system continuously monitors the input signal characteristics and automatically adjusts the signal processing method based on the detected signal speed. This feedback mechanism ensures the correct processing method is always applied without requiring manual reconfiguration.

Inventive Principle:

Principle #23Feedback

2Extent of automation

If passive switching method with continuous data rate measurement is used to determine signal transmission speed, then the system can automatically switch speed, but the workload of the system increases

Engineering Contradiction:

Improvesignal speed switching automationVSAvoidsystem workload

Core Design Contradiction:

Extent of automationVSProductivity

Solution Approach 1:

Instead of continuous measurement, the system performs periodic detection of the input signal to identify whether it contains a clock and data recovery signal. This periodic detection approach maintains automation while significantly reducing the continuous workload compared to constant data rate measurement.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system extracts only the essential information needed for speed detection - the presence or absence of a clock and data recovery signal - rather than measuring the complete data rate continuously. This extraction approach reduces computational workload while maintaining accurate speed determination.

Inventive Principle:

Principle #2Taking out (Extraction)

3Extent of automation

If passive switching method with data rate detection is used to determine signal transmission speed, then automatic switching is achieved, but the signal speed is easily misjudged due to equipment variations

Engineering Contradiction:

Improvesignal speed switching automationVSAvoidsignal speed detection accuracy

Core Design Contradiction:

Extent of automationVSMeasurement precision

Solution Approach 1:

The patent replaces complex data rate measurement mechanisms with a simpler signal presence detection mechanism. By detecting whether a clock and data recovery signal is present rather than measuring exact data rates, the system achieves more reliable speed determination that is not affected by equipment variations or signal quality issues.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system changes the detection parameter from continuous data rate measurement to binary signal presence detection. This parameter change makes the detection more robust against equipment variations and signal quality fluctuations, improving measurement precision while maintaining automation.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11476940B2Optical transceiver and signal processing method thereof

Publication Date: 2022.10.18 JESS-LINK PRODUCTS

AI summary

A signal processing method of an optical transceiver is provided and has the steps of: providing a receiver optical subassembly, a transmitter optical subassembly, an amplifying module and an identifying module, the amplifying module is electrically connected to the receiver optical subassembly and the transmitter optical subassembly, the identifying module is electrically connected to the receiver optical subassembly and the amplifying module; receiving an input optical signal via the receiver optical subassembly; periodically detecting the input optical signal by the identifying module to identify, setting the amplifier module at a high-speed mode if a clock and data recovery signal is attached, amplifying the input optical signal to generate an output optical signal and outputting through the transmitter optical subassembly; setting the signal amplifier module at a low-speed mode, and amplifying the input optical signal to generate an output optical signal and outputting through the transmitter optical subassembly.