Optical Communication Apparatus Dynamic Frequency Allocation
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Solution Overview
Problem
Conventional optical communication apparatuses can only transmit a single optical signal, leading to service interruptions and increased costs due to point-to-point connections and fixed frequency intervals, which limits the ability to adapt to changing communication demands and increases equipment and maintenance costs.
Innovation Solution
An optical communication apparatus that distributes client signals to multiple optical signals with different center frequencies, enabling wavelength division multiplexing and demultiplexing, allowing for flexible frequency allocation and reducing spectrum collisions, while also using an optical route switching apparatus with variable bandwidth for efficient signal routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional optical communication apparatus transmits a single optical signal with fixed frequency interval, then the network structure is simple and reliable, but the adaptability to changing communication demands is poor and service interruptions occur
Solution Approach 1:
The patent implements dynamic frequency allocation by allowing the optical communication apparatus to select from multiple available center frequencies (e.g., 192.1 THz, 196.1 THz, 200.1 THz) based on real-time network conditions and communication demands, rather than being fixed to a single frequency. This dynamic selection enables the system to adapt to changing traffic patterns and avoid service interruptions.
Solution Approach 2:
The patent changes the frequency parameter from a fixed value to a variable parameter that can be dynamically adjusted. The system can modify the center frequency of optical signals according to communication capacity requirements and network conditions, enabling flexible adaptation while managing device complexity through controlled parameter variation.
2Productivity
If point-to-point connections are used with single optical signal transmission, then the connection setup is simple, but the number of ports and relay devices increases leading to higher equipment and maintenance costs
Solution Approach 1:
The patent segments the communication capacity by allowing a single physical port to handle multiple logical connections through wavelength division multiplexing. The optical communication apparatus can simultaneously support multiple client signals (e.g., to destinations A, B, C) by dividing them into different wavelength channels, effectively segmenting the total capacity without requiring separate physical ports for each connection.
Solution Approach 2:
The optical communication apparatus is designed with multi-functionality to handle multiple types of client signals simultaneously. A single apparatus can serve multiple destinations (A, B, C) through wavelength division, making the port universal rather than dedicated to a single point-to-point connection, thereby reducing the total number of ports and relay devices needed in the network.
3Reliability
If fixed frequency intervals are used for optical signals, then the network configuration is straightforward, but the frequency use efficiency is low and spectrum collisions occur
Solution Approach 1:
The patent implements dynamic frequency selection where the optical communication apparatus can choose from multiple available center frequencies based on real-time network conditions. This dynamic approach allows the system to avoid spectrum collisions and optimize frequency utilization while maintaining reliable communication, contrasting with fixed frequency intervals that prioritize simplicity over efficiency.
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 allows for seamless capacity adjustments and reduces blocking by dynamically allocating center frequencies, enabling multiple connections with fewer ports and relay devices, thereby lowering apparatus and operational costs while maintaining high frequency use efficiency.
Implementation Method 1
an electrical/optical conversion unit configured to convert the distributed client signals to a plurality of optical signals having different center optical frequencies
Implementation Method 2
a wavelength division multiplexing unit configured to wavelength division multiplex the plurality of optical signals to output the plurality of optical signals
Data Source
AI summary
An optical communication apparatus, in the sending side, distributes client signals according to destinations and a communication capacity of each destination, electrical-to-optical converts the distributed signals to optical signals having different center frequencies, and multiplexes the optical signals to output, and in the receiving side, the optical communication apparatus divides the wavelength division multiplexed signal to each wavelength (for each sending source), optical-to-electrical converts the divided optical signals to electrical signals, and multiplexes the electrical signals to output. An add/drop port of an optical route switching apparatus includes an input/output port to the optical communication apparatus, and an optical frequency bandwidth is variable according to an optical spectrum width of the optical signal. A network is constructed by using the optical communication apparatus and the optical route switching apparatus.