Opto-Electronic Circuit Board Waveguide Horizontal Signal Coupling
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Solution Overview
Problem
Conventional opto-electronic circuit boards experience optic signal distortion and energy loss due to the need to change the transmission path of optic signals, which affects alignment precision and efficiency.
Innovation Solution
The opto-electronic circuit board design features a waveguide that maintains the optic signal's transmission path without vertical changes, using a core layer between cladding layers and aligning light emitters and receivers with the waveguide's core layer to reduce energy loss and improve signal accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the waveguide changes the transmission path of optic signals using 45-degree incident and outgoing faces, then the optic signal can be guided into and out of the waveguide, but optic signal distortion occurs due to energy loss and lack of alignment precision
Solution Approach 1:
The patent transitions from conventional vertical light coupling to horizontal in-plane coupling by changing the dimensional orientation of light propagation. The waveguide is disposed in the same plane as the light emitter and light receiver, allowing light to propagate horizontally along the circuit board plane rather than vertically, thereby eliminating the need for 45-degree face reflections and maintaining signal integrity
Solution Approach 2:
The patent removes the problematic 45-degree incident and outgoing faces from the waveguide structure. By extracting these reflective surfaces, the design eliminates the source of signal distortion and energy loss associated with path changes, achieving direct in-plane light coupling between emitter, waveguide, and receiver
2Productivity
If the optic signal transmission path is changed vertically through the waveguide, then the signal can be transmitted between components, but energy loss occurs due to multiple path changes
Solution Approach 1:
The patent establishes continuous in-plane light propagation through the waveguide without interruptions or direction changes. The light emitter, waveguide, and light receiver are all disposed in the same plane, enabling uninterrupted horizontal light transmission that maintains energy throughout the signal path, eliminating the energy loss associated with vertical path changes and reflections
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 approach reduces optic signal energy loss and enhances transmission accuracy by maintaining the signal path, allowing for more precise and effective signal transmission without the need for path changes.
Implementation Method 1
a waveguide 120... for guiding an optic signal in a horizontal direction without changing a transmission path of the optic signal
Data Source
AI summary
A method for assembling an opto-electronic circuit board is described as follows. A bottom cladding layer, a core layer and a top cladding layer are formed on the base orderly such that a waveguide is completed. A first light-guide hole is formed in a base material, and a light source is disposed on the base material thereby forming an emission component. A second light-guide hole is formed in another base material, and then an optic receiver is disposed on another base material thereby forming a receiver component. A circuit substrate is processed in order to form a first cavity, a second cavity and a third cavity on a first circuit layer of the substrate. The waveguide, the emission component and the receiver component are disposed respectively in the first cavity, the second cavity and the third cavity.