Optical Transmit Device Baud Rate Adaptation
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Solution Overview
Problem
Optical transmit devices face challenges in maintaining transmission performance across a wide range of baud rates, as fixed band characteristics can lead to distortion at lower baud rates and noise interference in wavelength division multiplexing, degrading signal quality and performance.
Innovation Solution
An optical transmit device with a conversion device, control unit, and driver that adjusts band characteristics based on baud rate through peaking adjustment values, ensuring compatibility from low to high baud rates without distortion, by utilizing a peaking characteristic to adapt band characteristics to match the signal's frequency characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the band characteristics are fixedly set to band characteristics capable of transmitting an optical signal at a low baud rate, then the transmission is compatible with low baud rate, but the band characteristics of an optical signal transmitted at a high baud rate may be distorted and the transmission performance may be deteriorated
Solution Approach 1:
The patent applies dynamics by making the band characteristics adjustable rather than fixed. The control unit dynamically changes the adjustment value for peaking based on the detected baud rate, allowing the driver to adapt the band characteristics to match different transmission rates. This resolves the contradiction by enabling the system to optimize performance for both low and high baud rates through real-time adjustment.
Solution Approach 2:
The patent applies parameter changes by modifying the adjustment value for peaking according to the baud rate. The control unit detects the baud rate and correspondingly adjusts the peaking parameter, which changes the band characteristics of the driver. This allows the system to maintain optimal transmission performance across different baud rates by changing the relevant parameters dynamically.
2Reliability
If the band characteristics are fixedly set to band characteristics capable of transmitting an optical signal at a high baud rate, then optical signals in a range from a low baud rate to a high baud rate can be transmitted without distortion, but noise components may remain in the region between the set band characteristics and the optical signal transmitted at a low baud rate, deteriorating the transmission performance
Solution Approach 1:
The patent applies dynamics by dynamically adjusting the band characteristics based on the actual baud rate being used. When a low baud rate is detected, the control unit reduces the adjustment value for peaking, which narrows the band characteristics to match the signal spectrum. This dynamically adapts the system to minimize noise components in unused frequency regions while maintaining undistorted transmission of the optical signal.
Solution Approach 2:
The patent applies parameter changes by modifying the peaking adjustment value according to the baud rate. When transmitting at low baud rates, the control unit decreases the peaking parameter, which reduces the bandwidth and eliminates noise components in the unused frequency range. This parameter adjustment resolves the contradiction by maintaining signal integrity while reducing harmful noise.
3Productivity
If the baud rate is increased to transmit an optical signal at a higher baud rate, then the transmission capacity increases, but the spectral width increases and the amount of band narrowing received in a reconfigurable optical add/drop multiplexer increases
Solution Approach 1:
The patent applies parameter changes by adjusting the peaking parameter based on the baud rate. When high baud rate transmission is required, the control unit increases the peaking adjustment value, which expands the band characteristics to accommodate the wider spectral width. This allows the system to maintain optimal performance at high baud rates by dynamically adjusting the bandwidth parameter to match the signal requirements.
Data Source
AI summary
An optical transmit device includes a conversion device configured to convert an electrical data signal into an optical signal, a control unit configured to change an adjustment value for peaking based on a baud rate of the optical signal, and a driver configured to change a band characteristic of the conversion device based on the adjustment value changed by the control unit.