Dynamic Dummy Light Wavelength Adjustment for Optical Transmission
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Solution Overview
Problem
In optical transmission systems with multiple vendors and varying standards, there is a challenge in adjusting the wavelength band of dummy light to avoid overlapping with the main signal, which is not addressed by existing technologies.
Innovation Solution
An optical transmission device with an output branching unit, a wavelength adjustment unit, a signal detection unit, and a control unit that detects the wavelength band of the main signal and adjusts the dummy light accordingly, ensuring non-overlapping bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dummy light is provided in a fixed wavelength band to compensate for lost signal power, then transmission line quality can be maintained, but wavelength band overlapping with main signal occurs when transmitters from different vendors are used
Solution Approach 1:
The patent applies dynamics by making the dummy light wavelength band adjustable rather than fixed. The wavelength band adjustment unit dynamically shifts the dummy light wavelength band based on detection results from the signal detection unit, allowing the system to adapt to different transmitter configurations from various vendors while preventing wavelength band overlapping and maintaining transmission line quality.
Solution Approach 2:
The patent implements feedback through the signal detection unit that continuously monitors the main signal wavelength band and provides detection results to the control unit. This feedback mechanism enables the system to automatically adjust the dummy light wavelength band to avoid overlapping with the actual main signal wavelengths, ensuring compatibility across different vendor equipment.
2Adaptability or versatility
If the wavelength band of dummy light is adjusted to match the main signal wavelength band, then wavelength band overlapping is avoided, but additional control mechanisms are required
Solution Approach 1:
The patent applies self-service by enabling the transmission device to automatically detect and adjust its own dummy light wavelength band without external intervention. The signal detection unit autonomously identifies the main signal wavelength band, and the control unit automatically controls the wavelength band adjustment unit to shift the dummy light band accordingly, reducing the need for complex manual configuration and external control mechanisms.
Solution Approach 2:
The patent introduces an intermediary approach by using the signal detection unit as a mediator between the main signal and the dummy light. This intermediary component detects the main signal characteristics and translates them into control signals for the wavelength band adjustment unit, simplifying the overall control architecture while ensuring accurate wavelength band separation.
Data Source
AI summary
The present invention provides an optical transmission device, a transmission system, and a control method for a transmission system which make it possible to adjust the wavelength band of dummy light according to the wavelength band of an added main signal. This optical transmission device comprises: an output branching unit which multiplexes and outputs an added main signal and dummy light; a wavelength adjustment unit which adjusts the wavelength band of the dummy light; a signal detection unit to which an optical signal outputted by the output branching unit is inputted, and which detects the wavelength band of the added main signal and outputs a detection result; and a control unit which controls the wavelength adjustment unit according to the detection result from the signal detection unit.