Optical Transceiver Module Link Training Verification
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Solution Overview
Problem
Existing optical transceiver modules face issues with incorrect link training sequences due to misjudgment of device connection, leading to the host entering a disable mode when the device is not properly coupled, causing inconvenience and requiring complex user settings or reboots.
Innovation Solution
Incorporating an indicating element in the connection unit to generate a signal indicating device coupling, which controls the output of optical signals only when the device is correctly connected, preventing unnecessary link training sequences and disable modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the optical transceiver module initiates optical signal output without verifying device coupling, then the data transmission can start quickly, but the host may enter disable mode due to incorrect link training sequences
Solution Approach 1:
The patent applies preliminary action by adding an indicating element that generates an indicating signal before the optical transmitting unit outputs optical signals. This preliminary verification step ensures the connection unit is properly coupled with the link device before initiating data transmission, preventing incorrect link training sequences and disable modes while maintaining efficient transmission
2Reliability
If the optical transceiver module includes connection verification through indicating element, then the link training accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent merges the indicating element and indicating signal generation function into the connection unit structure. The indicating element is integrated within the connection unit, and its generated indicating signal is directly used by the driving unit to control optical signal output, combining multiple functions into a unified structure that minimizes additional complexity
Solution Approach 2:
The indicating element automatically generates the indicating signal based on the coupling state between the connection unit and link device, without requiring external control or manual intervention. This self-service mechanism simplifies the overall control logic while ensuring reliable connection verification
Data Source
AI summary
An optical transceiver module adapted to a link device includes a connection unit, a driving unit and optical transmitting and receiving units. The connection unit, to be coupled with the link device, includes an indicating element for generating an indicating signal when the connection unit is coupled with the link device. The driving unit, coupled with the connection unit, receives the indicating signal and outputs a control signal according to the indicating signal. The optical transmitting unit, coupled with the driving unit, receives the control signal for driving the optical transmitting unit to output a first optical signal. The optical receiving unit, coupled with the driving unit, transmits a received second optical signal to the driving unit. An optical transmission device using the optical transceiver module, and an optical transmission method are also disclosed. A link training sequence can be initiated after the connection unit is actually coupled with the link device. Thus, a host cannot enter a disable mode due to error connection.