Variable Optical Waveguide for Flexible Channel Spacing
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Solution Overview
Problem
Existing arrayed waveguide gratings (AWGs) are limited to fixed channel spacings, making them inefficient for meeting diverse channel spacing requirements in wavelength division networks, leading to high costs and maintenance challenges due to the need for multiple types of AWGs and the inability to support hybrid transmission of optical signals with different channel spacings.
Innovation Solution
An optical waveguide apparatus featuring a variable optical waveguide that can disperse and separate optical signals based on configuration information, allowing for flexible channel spacing support by forming, eliminating, or changing optical signal transmission channels, thereby enabling the transmission of optical signals with different channel spacings and hybrid transmission of signals with varying channel spacings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed channel spacing AWG is used, then the device structure is simple and manufacturing is easy, but the device cannot support multiple channel spacings requiring multiple types of AWGs
Solution Approach 1:
The patent applies the dynamics principle by making the waveguide structure adjustable rather than fixed. The variable optical waveguide can dynamically change its physical dimensions (width, height, length) and refractive index through external control signals, allowing the same device to support multiple channel spacings. This transforms a static structure into a dynamic one that can adapt to different operational requirements.
Solution Approach 2:
The patent implements parameter changes by modifying key physical parameters of the waveguide including width, height, length, and refractive index. These parameter variations enable the waveguide to support different channel spacings. The refractive index can be changed through material composition adjustment or external field application, while dimensional parameters are modified during device fabrication or operation.
2Adaptability or versatility
If multiple types of AWGs are deployed to support different channel spacings, then all channel spacing requirements are met, but costs increase and maintenance becomes difficult
Solution Approach 1:
The patent applies universality by designing a single variable optical waveguide device that can perform multiple functions - supporting different channel spacings, enabling hybrid transmission modes, and adapting to various network requirements. This multi-functional design eliminates the need for multiple specialized devices, simplifying deployment and maintenance while reducing costs.
3Adaptability or versatility
If a variable optical waveguide is used to support different channel spacings, then adaptability improves and costs reduce, but the waveguide structure and control mechanism become more complex
Solution Approach 1:
The patent applies mechanics substitution by replacing complex mechanical adjustment mechanisms with optical and electrical control methods. Instead of physically reconfiguring waveguide structures through mechanical means, the invention uses optical signals and electrical fields to dynamically adjust waveguide properties, simplifying the control mechanism while maintaining adaptability.
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
The solution reduces costs and improves performance by allowing a single optical waveguide apparatus to support multiple channel spacings, reducing the need for multiple types and increasing efficiency and use range, while also enabling hybrid transmission of optical signals with different channel spacings.
Implementation Method 1
the separation unit includes a liquid crystal material, the control unit includes at least one electrode, and the at least one electrode determines, based on the configuration information, whether to apply a voltage to the at least one electrode
Implementation Method 2
the first dispersion unit is configured to disperse a frequency component of at least one first optical signal
Implementation Method 3
the first dispersion unit is configured to disperse a frequency component of at least one first optical signal
Data Source
AI summary
An optical waveguide apparatus including a first dispersion unit and a separation unit. The first dispersion unit is connected to the separation unit, the first dispersion unit is configured to disperse a frequency component of at least one first optical signal, and the separation unit is configured to separate, into at least one second optical signal based on configuration information, the frequency component that is of the at least one first optical signal and that is dispersed by the first dispersion unit. The separation unit is implemented by a variable optical waveguide, and the variable optical waveguide is an optical waveguide that implements at least one of the following functions based on the configuration information: forming an optical waveguide, eliminating an optical waveguide, and changing a shape of an optical waveguide.