Optical Communication Module Using Arrayed Waveguide Grating
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Solution Overview
Problem
Conventional optical-communication modules have suboptimal communication efficiency due to limitations in wavelength-division multiplexing filter technology, which restricts the effective transmission and reception of multiple signal beams with different wavelengths.
Innovation Solution
The optical-communication module incorporates arrayed waveguide gratings and wavelength-division multiplexing filters to enable simultaneous transmission and reception of multiple signal beams with different wavelengths, improving communication efficiency by using multiple light-emitting elements for transmission and optical sensors for reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional wavelength-division multiplexing filter is used, then two-way communication is achieved, but communication efficiency is suboptimal
Solution Approach 1:
The patent segments the wavelength spectrum into multiple discrete wavelength channels using arrayed waveguide gratings. Each wavelength channel can independently transmit signals, allowing simultaneous multiplexing and demultiplexing of multiple wavelengths within a single optical module, thereby improving communication efficiency while maintaining signal quality through dedicated wavelength paths.
2Speed
If single wavelength is used for communication, then device simplicity is maintained, but transmission speed and efficiency are limited
Solution Approach 1:
The optical communication module is designed with multi-functionality to handle multiple wavelength channels simultaneously. The arrayed waveguide grating structure serves universal functions of both multiplexing incoming wavelengths and demultiplexing outgoing wavelengths, enabling high-speed communication through parallel wavelength channels while keeping the overall module structure integrated and manageable.
3Productivity
If multiple wavelength channels are multiplexed, then communication capacity increases, but signal interference may increase
Solution Approach 1:
The patent implements local quality differentiation by providing dedicated multiplexing and demultiplexing paths for each wavelength channel through the arrayed waveguide grating structure. Each wavelength experiences optimized local optical conditions with minimal cross-talk, allowing high communication capacity through multiple channels while maintaining signal integrity and reducing interference through spatially separated wavelength paths.
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 configuration enhances the transmission speed and efficiency of optical-communication modules by allowing simultaneous multiplexing and demultiplexing of signals with various wavelengths, thereby optimizing two-way communication performance.
Implementation Method 1
arrayed waveguide gratings and wavelength-division multiplexing filters to enable simultaneous transmission and reception of multiple signal beams with different wavelengths
Implementation Method 2
arrayed waveguide gratings and wavelength-division multiplexing filters to enable simultaneous transmission and reception of multiple signal beams with different wavelengths
Implementation Method 3
multiple light-emitting elements for transmission and optical sensors for reception
Implementation Method 4
multiple light-emitting elements for transmission and optical sensors for reception
Data Source
AI summary
An optical-communication module includes an arrayed waveguide grating; a light transmitter including light-emitting elements for emitting first signal beams into the arrayed waveguide grating, wherein the first signal beams are converged into one first communication beam in the arrayed waveguide grating; a wavelength division multiplexing filter is used to transmit the first communication beam emitted by the arrayed waveguide grating to an optical fiber; an optical receiver including optical sensor for sensing second signal beams emitted from the arrayed waveguide grating. The optical fiber is used for transmitting a second communication beam to the wavelength division multiplexing filter. The second communication light beam enters the arrayed waveguide grating through the wavelength division multiplexing filter. The second communication beam is divided into the second signal beams in the arrayed waveguide grating.