Wavelength Cross Connect Device Multiband Relay Processing
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Solution Overview
Problem
The existing wavelength cross-connect devices for multiband transmission systems face increased device scale and power consumption due to the need for S-band, C-band, and L-band WXC units, with varying optical properties and technical maturity levels across wavelength bands, leading to performance differences and delayed realization times.
Innovation Solution
A wavelength cross-connect device with C-band WXC units that perform relay processing on optical signals of a specific wavelength band, using input and output conversion units to standardize signal processing, eliminating differences in optical properties and technical maturity dependencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate WXC units are provided for each wavelength band (S-band, C-band, L-band), then wavelength band-specific optical signal processing is achieved, but device scale and power consumption increase
Solution Approach 1:
The patent applies universality by designing a single WXC unit that can process multiple wavelength bands (S-band, C-band, L-band) through configurable wavelength band selection. The same physical infrastructure (optical amplifiers, WSSs, optical fibers) serves multiple wavelength bands by dynamically selecting which band to process, eliminating the need for separate dedicated units for each band while maintaining wavelength-specific processing capabilities.
2Reliability
If separate WXC units are provided for each wavelength band (S-band, C-band, L-band), then wavelength band-specific optical signal processing is achieved, but power consumption increases
Solution Approach 1:
The same physical infrastructure (optical amplifiers, WSSs, optical fibers) serves multiple wavelength bands by dynamically selecting which band to process, eliminating the need for separate dedicated units for each band while maintaining wavelength-specific processing capabilities.
Solution Approach 2:
The system dynamically activates only the components needed for the current wavelength band being processed. The wavelength band selection mechanism enables the system to self-regulate resource usage by enabling/disabling specific optical paths and components based on the active wavelength band, reducing power consumption compared to having all components continuously active.
3Reliability
If wavelength band-specific WXC units are used, then optical properties are optimized for each band, but differences in transmission performance occur across bands
Solution Approach 1:
The system dynamically adjusts operational parameters (wavelength band selection, optical path configuration, WSS settings) based on the active wavelength band. By changing these parameters rather than using fixed hardware configurations, the system maintains consistent transmission performance across different bands while still optimizing for each band's specific characteristics.
4Adaptability or versatility
If separate WXC units for different wavelength bands are deployed, then comprehensive multiband support is achieved, but realization time is delayed by the least mature technology band
Solution Approach 1:
A single unified WXC unit design supports all wavelength bands (S-band, C-band, L-band) through software/configuration control rather than requiring separate hardware units for each band. This approach enables all bands to be realized simultaneously using the same matured infrastructure, eliminating the sequential deployment timeline caused by waiting for the least mature band's technology to ready.
Data Source
AI summary
A wavelength cross-connect device performs relay processing, the relay processing being such that wavelength multiplexed signal lights, which are multiband transmitted from a plurality of routes, are demultiplexed into different wavelength bands, and for each route, respective optical signals of the different wavelength bands are amplified, then subject to route change by WSSs and outputted to output side routes M. The device includes C-band WXC units that are the same in total number as the wavelength bands of the optical signals of the respective wavelength bands and perform relay processing on optical signals of a specific wavelength band of the different wavelength bands.