Optical Module Lens-Group Merging for High-Capacity Transmission
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Solution Overview
Problem
The challenge in optical communication technology is to achieve high-speed data transmission while efficiently converting optical signals to electrical signals and vice versa, particularly in optical modules used in long-distance communication systems.
Innovation Solution
The optical module incorporates a light emitting device with a lens group and wavelength division multiplexers to multiplex optical signals of different wavelengths, and a polarizing beam splitter to convert signals into polarized lights of specific directions, enabling efficient signal merging and conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple optical signals are transmitted separately through separate fibers, then each signal can be transmitted reliably, but the space occupation and system complexity increase significantly
Solution Approach 1:
The patent combines multiple optical signals with different wavelengths into a single composite optical signal using wavelength division multiplexing. The light emitting device integrates multiple lasers emitting at different wavelengths, wavelength division multiplexers that combine these signals, and a lens group that merges them into one composite signal transmitted through a single fiber, thereby increasing transmission capacity while reducing system complexity
Solution Approach 2:
The optical module is designed as an integrated unit that performs multiple functions: it generates multiple optical signals at different wavelengths, multiplexes them together, and transmits them through a single fiber interface. This universal design allows the module to handle multiple data streams simultaneously without requiring separate transmission channels for each signal
2Length of moving object
If optical signals are transmitted over long distances, then communication range increases, but signal loss and attenuation become more severe
Solution Approach 1:
The patent utilizes different wavelengths for different optical signals, leveraging the fact that optical fibers have different attenuation characteristics at different wavelengths. By selecting appropriate wavelength combinations and using wavelength division multiplexing, the system can optimize signal transmission over long distances by choosing wavelengths that experience lower attenuation in the fiber medium
3Productivity
If a lens group with multiple lenses is used to multiplex optical signals, then signal merging efficiency improves, but manufacturing precision requirements increase
Solution Approach 1:
The lens group integrates multiple lenses that work together to merge multiple composite optical signals into a single merged signal. The first lens receives light from the first wavelength division multiplexer, the second lens receives light from the first lens and reflects light from the second wavelength division multiplexer, and the third lens receives light from the second lens - creating a coordinated optical path that efficiently combines multiple signals
Solution Approach 2:
The lens group acts as an intermediary optical system that bridges the wavelength division multiplexers and the fiber optic adapter. Through the coordinated action of multiple lenses with specific optical paths, it efficiently merges the output of multiple wavelength division multiplexers into a single composite signal that can be coupled into the fiber, reducing the direct positioning precision requirements between individual components
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 design enhances the transmission capacity and efficiency of optical modules by multiplexing multiple optical signals into a single composite signal, facilitating high-speed data transmission over long distances with reduced signal loss.
Implementation Method 1
The plurality of wavelength division multiplexers are disposed in the light emitting cavity and correspond to the plurality of lasers. The plurality of wavelength division multiplexers are configured to multiplex the plurality of optical signals into a plurality of composite optical signals.
Implementation Method 2
The lens group is disposed in the light emitting cavity and is configured to multiplex the plurality of composite optical signals into a merge composite optical signal.
Implementation Method 3
The second lens is configured to transmit the first part of the plurality of composite optical signals exited from the first lens, reflect the second part of the plurality of composite optical signals exited from the third lens to the first lens
Implementation Method 4
The second lens is configured to transmit the first part of the plurality of composite optical signals exited from the first lens, reflect the second part of the plurality of composite optical signals exited from the third lens to the first lens, and transmit the second part of the plurality of composite optical signals reflected by the first lens to adjust angles incident on the second lens
Implementation Method 5
The optical module incorporates a light emitting device with a lens group and wavelength division multiplexers to multiplex optical signals of different wavelengths, and a polarizing beam splitter to convert signals into polarized lights of specific directions
Data Source
AI summary
An optical module includes a light emitting assembly. The light emitting assembly includes a plurality of lasers, a plurality of wavelength division multiplexers and a lens group. The plurality of lasers emit a plurality of optical signals. The plurality of wavelength division multiplexers multiplex the plurality of optical signals into a plurality of composite optical signals. The lens group includes a first lens, a second lens, and a third lens. The second lens is configured to transmit a first part of the plurality of composite optical signals exited from the first lens, reflect a second part of the plurality of composite optical signals exited from the third lens to the first lens, and transmit the second part of the plurality of composite optical signals reflected by the first lens, so as to multiplex the plurality of composite optical signals into the merge composite optical signal.