Waveguide Couplers With Bevels And Bends
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Solution Overview
Problem
Existing optical beam couplers and splitters require complex tapping structures and stringent alignment for efficient signal transmission, which limits their flexibility and scalability in optoelectronic circuits.
Innovation Solution
The development of flexible waveguide configurations with dynamically adjustable coupling ratios, independent of polarization, using bevels and bends in waveguides with complementary shapes and reflective coatings, allowing for efficient light coupling and splitting without significant attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complicated tapping structures are used to extract optical signals from solid waveguides, then signal extraction capability is improved, but device complexity increases
Solution Approach 1:
The waveguide is divided into distinct sections: input waveguide, output waveguide, and coupling waveguide. The coupling waveguide acts as a separate entity that interfaces with both input and output waveguides, enabling signal extraction without complex tapping structures. This segmentation allows for simpler, more modular device design while maintaining effective signal coupling.
2Reliability
If stringent alignment and collimation are required for hollow metal waveguides, then signal transmission quality is improved, but ease of operation deteriorates
Solution Approach 1:
The coupling waveguide serves as an intermediary between the input and output waveguides. It provides a controlled interface that facilitates signal transfer without requiring direct, precise alignment between the main waveguide components. This intermediary structure relaxes the stringent alignment requirements while maintaining transmission quality.
3Manufacturing precision
If fixed coupling ratios are used in waveguide couplers, then manufacturing precision is improved, but adaptability deteriorates
Solution Approach 1:
The coupling ratio in the waveguide coupler is made dynamically adjustable rather than fixed. By incorporating control mechanisms that allow modification of the coupling waveguide's characteristics or its interaction with the input and output waveguides, the system can adapt to different signal distribution requirements while maintaining manufacturing precision through controlled adjustment parameters.
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
Enables flexible topographical arrangements for signal paths with adjustable coupling ratios, reducing alignment complexities and maintaining signal integrity, thus enhancing the performance and scalability of optoelectronic circuits.
Implementation Method 1
the first waveguide includes a bevel configured to reflect any light incident thereon
Implementation Method 2
the first waveguide includes a bevel configured to reflect any light incident thereon
Data Source
AI summary
Beam couplers and splitters are disclosed herein. An example of a beam coupler and splitter includes a first waveguide having a first waveguide bevel and a bend, the first waveguide bevel to totally internally reflect at least some light incident thereon. A second waveguide includes a second waveguide bevel complementarily shaped to the first waveguide bevel, the second waveguide being coupled to the first waveguide such that i) the first waveguide bevel is offset from the second waveguide bevel so that a first portion of the first waveguide bevel is in direct contact with a first portion of the second waveguide bevel, a second portion of the first waveguide bevel is exposed, and a second portion of the second waveguide bevel is exposed, and ii) a predetermined coupling ratio is achieved.