Multi-Channel WDM Light Emitting Device With Dual Multiplexers
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Solution Overview
Problem
Conventional optical communication systems face challenges in achieving high density and low power consumption while maintaining fast transmission rates and large bandwidth, due to size and power constraints defined by standard specifications in multi-source agreements.
Innovation Solution
A multi-channel WDM light emitting device with two independent wavelength division multiplexers and an optical transceiver design that includes a casing with an optical communication assembly, featuring a substrate with light emitting units, wavelength division multiplexers, optical lenses, a temperature controller, optical isolators, and an airtight cavity to enhance optical coupling efficiency and maintain temperature stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of channels in a WDM light emitting device is increased to provide larger bandwidth, then the transmission rate and bandwidth are improved, but the device size and complexity increase beyond standard form factor constraints
Solution Approach 1:
The device is divided into two independent wavelength division multiplexers, each handling a subset of channels. This segmentation allows the optical paths to be separated and managed independently, reducing the overall complexity and size while maintaining high channel count capability. Each multiplexer processes fewer wavelengths, making the individual components smaller and more manageable within form factor constraints.
Solution Approach 2:
The patent utilizes spatial arrangement by disposing the two wavelength division multiplexers at different locations within the device housing. This dimensional arrangement allows optical paths to be separated in space, enabling high channel count functionality without proportionally increasing the footprint. The multiplexers are positioned to optimize optical coupling while maintaining a compact overall device size.
2Productivity
If more optical components are added to increase channel count, then bandwidth is improved, but power consumption increases
Solution Approach 1:
By segmenting the total channel count across two independent wavelength division multiplexers, each multiplexer handles fewer channels simultaneously. This reduces the power consumption per multiplexer compared to a single multiplexer handling all channels, while still achieving the desired total bandwidth through combined output of both multiplexers.
3Volume of moving object
If the device size is reduced to meet form factor standards, then density is improved, but optical coupling efficiency decreases
Solution Approach 1:
The patent employs three-dimensional spatial arrangement of optical components within the compact housing. The wavelength division multiplexers are positioned at optimized locations to maximize optical coupling efficiency despite the reduced overall device size. This dimensional optimization allows maintaining reliable optical connections while meeting form factor constraints.
Solution Approach 2:
Optical lenses are introduced as intermediary components to facilitate efficient coupling between the wavelength division multiplexers and other optical elements. These lenses compensate for the challenges of miniaturization by providing focal control and mode matching, ensuring high optical coupling efficiency within the compact device structure.
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 effectively increases bandwidth and transmission rate while reducing power consumption and size, preventing interference and maintaining optical coupling efficiency, even in high-channel count configurations.
Implementation Method 1
a first wavelength division multiplexer (250) and a second wavelength division multiplexer (260)
Implementation Method 2
a plurality of optical lenses (270) disposed on the substrate (210)
Implementation Method 3
a temperature controller, optical isolators, and an airtight cavity to enhance optical coupling efficiency and maintain temperature stability
Implementation Method 4
optical isolators, and an airtight cavity to enhance optical coupling efficiency and maintain temperature stability
Data Source
AI summary
A multi-channel wavelength division multiplexing light emitting device includes a casing and an optical communication assembly accommodated in the casing. The optical communication assembly includes a substrate, a plurality of first light emitting units disposed on the substrate, a plurality of second light emitting units disposed on the substrate, a first wavelength division multiplexer, and a second wavelength division multiplexer. The first light emitting units are arranged to correspond with the first wavelength division multiplexer. The second light emitting units are arranged to correspond with the second wavelength division multiplexer.