Optical Transfer System Wavelength Alignment Control
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Solution Overview
Problem
Existing optical transfer systems face challenges in maintaining reception quality due to wavelength mismatches between signal light and local emission light, particularly when wavelength converters alter the signal light's wavelength, leading to difficulties in electrical correction and reception at the receiver.
Innovation Solution
An optical transfer system that includes a transmitter, first and second wavelength converters, and a control device to adjust the local emission light wavelength based on the transmission light, first excitation light, and second excitation light wavelengths, using a formula to calculate the reception light wavelength and set the local emission light wavelength accordingly, thereby aligning it with the reception light wavelength to prevent mismatches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wavelength converters are used to expand transfer capacity across multiple wavelength bands, then transfer capacity is improved, but wavelength mismatch between reception light and local emission light occurs causing deterioration of reception quality
Solution Approach 1:
The control device calculates the reception light wavelength in advance based on the transmission light wavelength and excitation light wavelengths before the actual reception process, and sets the local emission light wavelength accordingly to prevent wavelength mismatch from occurring in the first place
Solution Approach 2:
The system establishes a feedback mechanism where the control device continuously monitors the transmission light wavelength and excitation light wavelengths, dynamically adjusts the local emission light wavelength setting based on calculated reception light wavelength, ensuring continuous wavelength alignment despite environmental changes
2Adaptability or versatility
If environmental temperature changes or optical fiber characteristics vary, then wavelength conversion flexibility is improved, but wavelength mismatch increases making electrical correction difficult
Solution Approach 1:
The system transitions from a static wavelength configuration to a dynamic one where the local emission light wavelength is continuously adjusted based on real-time calculation of reception light wavelength, allowing the system to adapt to environmental temperature changes and optical fiber characteristic variations
Solution Approach 2:
The control device changes the wavelength parameter of local emission light dynamically by calculating the optimal wavelength based on transmission light wavelength and excitation light wavelengths, ensuring the reception light wavelength always matches the local emission light wavelength despite external condition changes
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively suppresses deterioration of reception quality by ensuring the local emission light wavelength matches the reception light wavelength, even when the signal light wavelength is converted, thereby maintaining optimal signal power and reducing errors caused by zero-dispersion wavelength mismatches in nonlinear fibers.
Implementation Method 1
a first wavelength converter configured to use first excitation light to perform wavelength-conversion of first signal light which is the transmission light into second signal light in a different wavelength band
Data Source
AI summary
An optical transfer method of an optical transfer system including a transmitter, a first wavelength converter configured to use first excitation light to perform wavelength-conversion of first signal light which is the transmission light into second signal light in a different wavelength band, a second wavelength converter configured to use second excitation light to perform wavelength-conversion of the second signal light into third signal light in a different wavelength band, and a receiver configured to receive the third signal light, the method includes acquiring a wavelength of the transmission light, a wavelength of the first excitation light, and a wavelength of the second excitation light; and deciding local emission light of the receiver based on a wavelength of reception light of the receiver obtained from the wavelength of the transmission light, the wavelength of the first excitation light, and the wavelength of the second excitation light.